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rlaope/estudy

AI and engineering reinforcement learning for human

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README.md

## estudy.

```
해당 estudy 저장소는 내가 소프트웨어라는 학문을 연구하고 공부하면서 작성했던 기록들의 집합이다.  
단순 이론 기록 부터 딥다이브와 리서치, 개인적인 생각과 호소, 내가 중요하게 생각하는 가치와 경험들이 담겨있기도 하다.  
요즘 개발자의 추월차선이라는 개념을 스스로 구상하고 있는데, 기록(記錄)이 규모와 진입의 계명을 타파할 수 있을까 자문중이다.

물론 기록이라는 행위 자체가 누군가에게 보여주거나 지적 허영심을 충족하기 위한 수단이였다면 이 저장소를 만들지도 않았다.  
그러나 어느정도 나무가 심어져감에 따라, 숲이 완성되어가는 모습을 보자니 숨어있던 나의 욕망이 들어나는 것 같기도하다.  
나름 자랑하고 싶은 글을 쓰고싶을때도 있고, 기록이라는 행위 그 자체에 본질적인 가치를 얻는 것 때문에도 글을 쓴다.

동기가 내부적이든 외부적이든 어찌되었든 하나 확실한 것은 기록이라는 데이터 자체는 이곳에 커밋되는 순간 영원해지며  
내용이 다르든 구조가 다르든 형식이 다르든 어찌되었든 이 저장소에서는 모든것이 소중하고 가치있는 데이터들이다.  
서론이 길어졌다. 어찌되었든 이 저장소는 단순하게 소프트웨어 개발자로서 잡다한 가치를 지닌 기록들의 집합이다.  
어느 내용은 당신에게 도움이 되지 않을지도 모르지만 어느 내용은 터닝포인트가 될 수도 있지 않을까 싶다.

"나의 지식의 숲 estudy에 방문해주신 것을 진심으로 환영드리며 또 감사드립니다."
```

#### Essentials
- [소프트웨어 엔지니어로서 성장하기](http://github.com/rlaope/estudy/blob/master/brains/Essentials/growth.md)
- [왜 선배들은 Hello World를 찍으라할까?](http://github.com/rlaope/estudy/blob/master/brains/Essentials/helloworld.md)
- [YAGNI, 리팩터링, 소프트웨어 의사결정에 관한 이야기](http://github.com/rlaope/estudy/blob/master/brains/Essentials/yagni.md)
- [애자일 소프트웨어 개발](http://github.com/rlaope/estudy/blob/master/brains/Essentials/agilesw.md)
- [일을 잘한다와 개발을 잘한다의 정의](http://github.com/rlaope/estudy/blob/master/brains/Essentials/works.md)
- [나만의 역량 강화, 지속 가능한 성장 방법](http://github.com/rlaope/estudy/blob/master/brains/Essentials/steady.md)
- [카르페디엠(Carpe Diem)](http://github.com/rlaope/estudy/blob/master/brains/Essentials/carpedm.md)
- [AI 시대에서 살아남는 방법](http://github.com/rlaope/estudy/blob/master/brains/Essentials/ai_ithink.md)

---

#### Server

- [KISS, YAGNI, DRY](http://github.com/rlaope/estudy/blob/master/brains/Back-End/kyd.md)
- [인증(Authentication), 인가(Authorization)](http://github.com/rlaope/estudy/blob/master/brains/Back-End/backend/auth.md)
- [Back-End 효율적인 API 명세서 설계방법](http://github.com/rlaope/estudy/blob/master/brains/Back-End/backend/api.md)
- [Java Back-End 웹 기술 역사](http://github.com/rlaope/estudy/blob/master/brains/Back-End/backend/history.md)
- [Clean Architecture](http://github.com/rlaope/estudy/blob/master/brains/Back-End/backend/cleanspring.md)
- [OAuth 2.0 개념과 권한 부여 방식 알아보기](http://github.com/rlaope/estudy/blob/master/brains/Back-End/backend/oauth2.md)
- [2023 제 3회 당근마켓 SRE 밋업 후기](http://github.com/rlaope/estudy/blob/master/brains/Back-End/backend/당근밋업.md)
- [IntelliJ 테스트 커버리지 확인하기](http://github.com/rlaope/estudy/blob/master/brains/Back-End/backend/test_cov.md)
- [SOLID 원칙과 각 원칙의 장단점](http://github.com/rlaope/estudy/blob/master/brains/Back-End/backend/solid.md)
- [Kotlin, JPA가 서로 지향하는 방향의 차이](http://github.com/rlaope/estudy/blob/master/brains/Back-End/kotlin/kotlin_jpa.md)
- [Netty](http://github.com/rlaope/estudy/blob/master/brains/Back-End/backend/netty.md)
  - [Java IO, NIO](https://github.com/rlaope/netty.io/blob/master/1-1%20NIO/nio.md)
  - [Java NIO - Selector](https://github.com/rlaope/netty.io/blob/master/1-1%20NIO/selector.md)
  - [비동기식 이벤트 기반 네트워킹](https://github.com/rlaope/netty.io/blob/master/1-2%20Intro/async.md)
  - [네티의 핵심 컴포넌트](https://github.com/rlaope/netty.io/blob/master/1-3%20Component/netty_component.md)
  - [Netty Thread Model](http://github.com/rlaope/estudy/blob/master/brains/Back-End/netty_thread.md)
- [Netty Message Flow](http://github.com/rlaope/estudy/blob/master/brains/Back-End/netty_flow.md)
- [EventLoop, Thread Model, Tuning(ioRatio, epoll)](http://github.com/rlaope/estudy/blob/master/brains/Back-End/eventloopnetty.md)
- [ByteBuf, Memory Management](http://github.com/rlaope/estudy/blob/master/brains/Back-End/dirbuff.md)
- [Netty가 완료된 작업을 식별하는 메커니즘](http://github.com/rlaope/estudy/blob/master/brains/Back-End/nettyiden.md)
- [Netty Async Flow Control(Future, Promise, Listener)](http://github.com/rlaope/estudy/blob/master/brains/Back-End/netty_async.md)
- [EventLoopGroup](http://github.com/rlaope/estudy/blob/master/brains/Back-End/netty/elg.md)
- [NioEventLoop vs EpollEventLoop](http://github.com/rlaope/estudy/blob/master/brains/Back-End/netty/nioepoll.md)
- [Netty Native Memroy Tuning, BackPressure](http://github.com/rlaope/estudy/blob/master/brains/Back-End/netty/native.md)
- [Reactive Programming](http://github.com/rlaope/estudy/blob/master/brains/Back-End/backend/reactive_programming.md)
- [우아한 테크 세미나 - 우아한 스프링 배치](http://github.com/rlaope/estudy/blob/master/brains/Back-End/baemin_batch.md)
- [Cache - Eviction, Expiration, Passivation](http://github.com/rlaope/estudy/blob/master/brains/Back-End/backend/eviction.md)
- [Protocol Buffers](http://github.com/rlaope/estudy/blob/master/brains/Back-End/backend/protobuf.md)
- [Redis 분산락 + WebFlux 프로젝트](https://github.com/rlaope/concurrency-project)
- [Kafka](http://github.com/rlaope/estudy/blob/master/brains/Back-End/backend/kafka요소.md)
  - [Zookeeper](http://github.com/rlaope/estudy/blob/master/brains/Back-End/backend/kafka요소2.md)
- [PUB/SUB Architecture](http://github.com/rlaope/estudy/blob/master/brains/Back-End/backend/pub_sub.md)
- [Kafka 리밸런싱](http://github.com/rlaope/estudy/blob/master/brains/Back-End/kafka/rebalancing.md)
- [Kafka Consumer Offset 수동 commit](http://github.com/rlaope/estudy/blob/master/brains/Back-End/kafka/autocommit.md)
- [Kafka ISR(In Sync Replica)](http://github.com/rlaope/estudy/blob/master/brains/Back-End/kafka/isr.md)
- [Producer 주요 Options](http://github.com/rlaope/estudy/blob/master/brains/Back-End/kafka/producer.md)
- [Kafka Disk I/O (Sequenctial I/O, Page Cache, Zero Copy)](http://github.com/rlaope/estudy/blob/master/brains/Back-End/kafka/disk.md)
- [Kafka Replication 작동 원리](http://github.com/rlaope/estudy/blob/master/brains/Back-End/kafka/replica.md)
- [Kakfa Partition](http://github.com/rlaope/estudy/blob/master/brains/Back-End/kafka/partition.md)
- [State Machine Model](http://github.com/rlaope/estudy/blob/master/brains/Back-End/state_machine2.md)
  - [Kafka Partition](http://github.com/rlaope/estudy/blob/master/brains/Back-End/kafka/partition2.md)
- [State Machine Pattern](http://github.com/rlaope/estudy/blob/master/brains/Back-End/state_machine.md)
- [다중 환경에서 세션은 어떻게 공유하고 관리할까?](http://github.com/rlaope/estudy/blob/master/brains/Back-End/backend/multi_session.md)
- [분산 환경 합의 알고리즘 Paxos](http://github.com/rlaope/estudy/blob/master/brains/Back-End/backend/paxos.md)
- [Kernel](http://github.com/rlaope/estudy/blob/master/brains/Back-End/kernel/kernel.md)
  - [Block IO (Buffer Head, BIO Struct, Scheduler)](http://github.com/rlaope/estudy/blob/master/brains/Back-End/kernel/blockio.md)
- [Linux](http://github.com/rlaope/estudy/blob/master/brains/Back-End/linux)
  - [Command nmap](http://github.com/rlaope/estudy/blob/master/brains/Back-End/linux/nmap.md)
- [LXC(Linux Container)](http://github.com/rlaope/estudy/blob/master/brains/Back-End/linux/lxc.md)
- [Linux Performance analysis commands](http://github.com/rlaope/estudy/blob/master/brains/Linux)
  - [uptime](http://github.com/rlaope/estudy/blob/master/brains/Linux/uptime.md)
  - [dmesg](http://github.com/rlaope/estudy/blob/master/brains/Linux/dmesg.md)
  - [free](http://github.com/rlaope/estudy/blob/master/brains/Linux/free.md)
  - [df](http://github.com/rlaope/estudy/blob/master/brains/Linux/df.md)
  - [top](http://github.com/rlaope/estudy/blob/master/brains/Linux/top.md)
  - [netstat](http://github.com/rlaope/estudy/blob/master/brains/Linux/netstat.md)
  - [epoll](http://github.com/rlaope/estudy/blob/master/brains/Linux/epoll.md)
- [Linux File System EXT](http://github.com/rlaope/estudy/blob/master/brains/Linux/linux_filesystem.md)
- [User Space, Kernel Space](http://github.com/rlaope/estudy/blob/master/brains/Linux/ku.md)
- [System Call Interface](http://github.com/rlaope/estudy/blob/master/brains/Linux/syscall.md)
- [buffer_head](http://github.com/rlaope/estudy/blob/master/brains/Linux/buffer_head.md)
- [분산 시스템에서 시간 동기화 문제와 해결 알고리즘](http://github.com/rlaope/estudy/blob/master/brains/Back-End/backend/timesync.md)
- [분산 시스템 논리적 시계(렘포트 시계, 벡터 시계)](http://github.com/rlaope/estudy/blob/master/brains/Back-End/backend/logicaltime.md)
- [IDC 이중화 구성으로 DR하기 + Kafka 이중화 예시](http://github.com/rlaope/estudy/blob/master/brains/Back-End/backend/dr.md)
- [Data Partitioning](http://github.com/rlaope/estudy/blob/master/brains/Back-End/backend/partition.md)
- [마이크로서비스 아키텍쳐 (MicroService Architecture)](http://github.com/rlaope/estudy/blob/master/brains/Back-End/backend/msa.md)
- [확장 큐브로 보는 마이크로서비스](http://github.com/rlaope/estudy/blob/master/brains/MSA/확장큐브.md)
- [MA, MSA, SOA(Service Oriented Architecture), ESB, SOAP](http://github.com/rlaope/estudy/blob/master/brains/MSA/soa.md)
- [서비스 디스커버리를 DNS, 로드 밸런서 방식을 사용하지 않는 이유](http://github.com/rlaope/estudy/blob/master/brains/MSA/service_discovery_dns.md)
- [마이크로서비스 클라이언트 회복성 패턴](http://github.com/rlaope/estudy/blob/master/brains/MSA/recover.md)
- [MSA 핵심 디자인 패턴](http://github.com/rlaope/estudy/blob/master/brains/MSA/pattern)
  - [Two Phase Commit](http://github.com/rlaope/estudy/blob/master/brains/MSA/pattern/two_phase_commit.md)
- [Saga Pattern](http://github.com/rlaope/estudy/blob/master/brains/MSA/pattern/saga.md)
- [Event Sourcing](http://github.com/rlaope/estudy/blob/master/brains/MSA/pattern/event_sourcing.md)
- [CQRS](http://github.com/rlaope/estudy/blob/master/brains/MSA/pattern/cqrs.md)
- [Transactional Outbox Pattern](http://github.com/rlaope/estudy/blob/master/brains/MSA/pattern/outbox.md)
- [마이크로서비스 아키텍처 IPC](http://github.com/rlaope/estudy/blob/master/brains/MSA/ipc/ipc.md)
  - [동기 RPI 패턴 응용 통신](http://github.com/rlaope/estudy/blob/master/brains/MSA/ipc/rpi.md)
- [서비스 디스커버리 Service Discovery](http://github.com/rlaope/estudy/blob/master/brains/MSA/service_discovery.md)
- [비동기 메시지 패턴 응용 통신](http://github.com/rlaope/estudy/blob/master/brains/MSA/ipc/async_message.md)
- [서비스 메시 Service Mesh](http://github.com/rlaope/estudy/blob/master/brains/DevOps/service_mesh.md)
- [Istio](http://github.com/rlaope/estudy/blob/master/brains/DevOps/istio.md)  
  - [Envoy Proxy Internal Architecture](http://github.com/rlaope/estudy/blob/master/brains/DevOps/envoy.md)
- [xDS Protocol, Control Plane (Istio Pilot)](http://github.com/rlaope/estudy/blob/master/brains/DevOps/xds.md)
- [Traffic Control & Security mTLS](http://github.com/rlaope/estudy/blob/master/brains/DevOps/istio_traffic.md)
- [Istio Circuit Breaker](http://github.com/rlaope/estudy/blob/master/brains/DevOps/istiocircuit.md)
- [마이크로서비스에서 분산 트랜잭션 관리하기](http://github.com/rlaope/estudy/blob/master/brains/MSA/distribution.md)
- [SRE](http://github.com/rlaope/estudy/blob/master/brains/SRE/)
  - [SLO, SLI, SLA](http://github.com/rlaope/estudy/blob/master/brains/SRE/slo.md)
- [Socket Programming](http://github.com/rlaope/estudy/blob/master/brains/Back-End/socketp.md)
- [Encryption Algorithm, AES256](http://github.com/rlaope/estudy/blob/master/brains/Back-End/encrypt.md)
- [Low Level, JVM Async Programming](https://github.com/rlaope/estudy/blob/master/brains/Back-End/backend/async.md)
- [수치 기반 사고(Observability + Capacity Planning)](https://github.com/rlaope/estudy/blob/master/brains/Back-End/backend/think.md)
- [Failover Consistency](https://github.com/rlaope/estudy/blob/master/brains/Back-End/backend/failcon.md)
- [Netty Proxy](https://github.com/rlaope/estudy/blob/master/brains/Back-End/nettyproxy.md)
- [TCP SYN/ACCEPT Queue 성능 튜닝](https://github.com/rlaope/estudy/blob/master/brains/Network/tcpqueue.md)
- [외부 연동 시스템 리소스 제약과 쏟아지는 트래픽 대응](https://github.com/rlaope/estudy/blob/master/brains/Back-End/nice.md)
- [성능 테스트](https://github.com/rlaope/estudy/blob/master/brains/Back-End/ftest.md)
- [WAL, 분산 시스템 데이터 일관성과 장애 복구 패턴](https://github.com/rlaope/estudy/blob/master/brains/Back-End/dist.md)
- [캐시 시스템 설계 이론](https://github.com/rlaope/estudy/blob/master/brains/Back-End/cache.md)
- [캐시 시스템 설계 구현](https://github.com/rlaope/estudy/blob/master/brains/Back-End/cache2.md)
- [캐시 무중단 마이그레이션 (Lazy Migration)](https://github.com/rlaope/estudy/blob/master/brains/Back-End/cachemigrate.md)
- [장애 지점 식별 및 C/A 시스템 설계](https://github.com/rlaope/estudy/blob/master/brains/Back-End/dist_consist.md)
- [Distributed Lock 취득 후 master node가 다운되었을때](https://github.com/rlaope/estudy/blob/master/brains/Back-End/distlock.md)
- [캐시 스템피드 현상 제어 (Distributed Lock, PER)](https://github.com/rlaope/estudy/blob/master/brains/Back-End/stampede.md)
- [대규모 DB 및 데이터 마이그레이션](https://github.com/rlaope/estudy/blob/master/brains/Back-End/dbmigrate.md)
- [SNAT 포트 고갈, DNS 해상도 지연 문제 해결](https://github.com/rlaope/estudy/blob/master/brains/Back-End/trafficportdns.md)
- [Kafka 파티션 리밸런싱중 발생하는 중복 메시지 처리, 멱등성 보장](https://github.com/rlaope/estudy/blob/master/brains/Back-End/idem.md)
- [분산 합의 (Consensus) 알고리즘](https://github.com/rlaope/estudy/blob/master/brains/Back-End/paxra.md)
- [Zookeeper가 Paxos를 기용한 이유](https://github.com/rlaope/estudy/blob/master/brains/Back-End/zookeeperpaxos.md)

---

#### DevOps

- [DevOps Engineer](http://github.com/rlaope/estudy/blob/master/brains/DevOps/devops.md)
- [도커와 쿠버네티스](http://github.com/rlaope/estudy/blob/master/brains/정보처리/doker.md)
- [IaaS, PaaS, SaaS 차이](http://github.com/rlaope/estudy/blob/master/brains/DevOps/XaaS.md)
- [CI/CD 파이프라인과 구현과정](http://github.com/rlaope/estudy/blob/master/brains/DevOps/cicd.md)
- [가상머신(Virtual Machine) vs 컨테이너(Container)](http://github.com/rlaope/estudy/blob/master/brains/DevOps/vircon.md)
- [배포 전략의 종류(롤링/블루 그린/카나리)](http://github.com/rlaope/estudy/blob/master/brains/DevOps/deploy.md)
- [Docker Container](http://github.com/rlaope/estudy/blob/master/brains/DevOps/Docker/docker.md)
  - [컨테이너 제어 명령어](http://github.com/rlaope/estudy/blob/master/brains/DevOps/Docker/컨테이너제어명령어.md)
- [컨테이너 관리 명령어](http://github.com/rlaope/estudy/blob/master/brains/DevOps/Docker/컨테이너관리명령어.md)
- [이미지 관련 명령어](http://github.com/rlaope/estudy/blob/master/brains/DevOps/Docker/이미지관련명령어.md)
- [도커 컨테이너를 띄워보자](http://github.com/rlaope/estudy/blob/master/brains/DevOps/Docker/container.md)
- [컨테이너 외부 노출](http://github.com/rlaope/estudy/blob/master/brains/DevOps/Docker/컨테이너외부노출.md)
- [컨테이너 애플리케이션 구축](http://github.com/rlaope/estudy/blob/master/brains/DevOps/Docker/컨테이너애플리케이션구축.md)
- [도커 볼륨 이용하기](http://github.com/rlaope/estudy/blob/master/brains/DevOps/Docker/도커볼륨.md)
- [도커 네트워크 구조](http://github.com/rlaope/estudy/blob/master/brains/DevOps/Docker/network.md)
- [컨테이너 로깅](http://github.com/rlaope/estudy/blob/master/brains/DevOps/컨테이너로깅.md)
- [컨테이너 자원 제한](http://github.com/rlaope/estudy/blob/master/brains/DevOps/컨테이너자원제한.md)
- [도커 이미지 생성](http://github.com/rlaope/estudy/blob/master/brains/DevOps/Docker/docker_image.md)
- [Docker Swarm](http://github.com/rlaope/estudy/blob/master/brains/DevOps/Docker/swarm.md)
- [spring boot 프로젝트를 Docker를 사용해 배포하기](http://github.com/rlaope/estudy/blob/master/brains/DevOps/Docker/spring_docker.md)
- [permission denied while trying .. Docker demon socket 트러블 슈팅](http://github.com/rlaope/estudy/blob/master/brains/DevOps/Docker/denied.md)
- [Docker Engine LXC, libcontainer](http://github.com/rlaope/estudy/blob/master/brains/DevOps/Docker/도커엔진.md)
- [Namespace, Container + runc syscall tracking](http://github.com/rlaope/estudy/blob/master/brains/DevOps/Docker/ns.md)
- [Kubernetes](http://github.com/rlaope/estudy/blob/master/brains/DevOps/k8s/k8s.md)
  - [Desired State](http://github.com/rlaope/estudy/blob/master/brains/DevOps/k8s/desired_state.md)
- [쿠버네티스 구성요소](http://github.com/rlaope/estudy/blob/master/brains/DevOps/k8s/component.md)
- [쿠버네티스 API 리소스](http://github.com/rlaope/estudy/blob/master/brains/DevOps/k8s/api_resource.md)
- [쿠버네티스의 동작 흐름](http://github.com/rlaope/estudy/blob/master/brains/DevOps/k8s/process.md)
- [쿠버네티스 대시보드 토큰 발행 및 접속](http://github.com/rlaope/estudy/blob/master/brains/DevOps/k8s/dashboard.md)
- [Kubernetes Cluster](http://github.com/rlaope/estudy/blob/master/brains/DevOps/k8s/cluster.md)
- [Control Plane](http://github.com/rlaope/estudy/blob/master/brains/DevOps/k8s/control_plane.md)
- [Pod](http://github.com/rlaope/estudy/blob/master/brains/DevOps/k8s/pod.md)
- [Pod LifeCycle(Phase, Condition)](http://github.com/rlaope/estudy/blob/master/brains/DevOps/k8s/pod_lifecycle.md)
- [Pod의 생명주기, 재시작 정책](http://github.com/rlaope/estudy/blob/master/brains/DevOps/k8s/podstatus.md)
- [멀티 컨테이너 파드 디자인 패턴](http://github.com/rlaope/estudy/blob/master/brains/DevOps/k8s/multipod.md)
- [Qos Classes](http://github.com/rlaope/estudy/blob/master/brains/DevOps/k8s/qos.md)
- [Node Scheduling](http://github.com/rlaope/estudy/blob/master/brains/DevOps/k8s/node_scheduling.md)
- [Probe](http://github.com/rlaope/estudy/blob/master/brains/DevOps/k8s/probe.md)
- [Service - ClusterIP, NodePort, LoadBalancer](http://github.com/rlaope/estudy/blob/master/brains/DevOps/k8s/service.md)
- [Service - Headless, Endpoint, ExternalName](http://github.com/rlaope/estudy/blob/master/brains/DevOps/k8s/service2.md)
- [ReplicaSet](http://github.com/rlaope/estudy/blob/master/brains/DevOps/k8s/replicaset.md)
- [Deployment](http://github.com/rlaope/estudy/blob/master/brains/DevOps/k8s/deployment.md)
- [DaemonSet, Job, CronJob](http://github.com/rlaope/estudy/blob/master/brains/DevOps/k8s/daemonset.md)
- [Volume](http://github.com/rlaope/estudy/blob/master/brains/DevOps/k8s/volume.md)
- [ConfigMap, Secret](http://github.com/rlaope/estudy/blob/master/brains/DevOps/k8s/config_map.md)
- [Namespace, ResourceQuota, LimitRange](http://github.com/rlaope/estudy/blob/master/brains/DevOps/k8s/namespace.md)
- [Cluster Autoscaler, Karpenter](http://github.com/rlaope/estudy/blob/master/brains/DevOps/k8s/karpenter.md)
- [Kubernetes Scheduler, Controller](http://github.com/rlaope/estudy/blob/master/brains/DevOps/k8s/scheduler.md)
- [PV, PVC Dynamic Provisioning](http://github.com/rlaope/estudy/blob/master/brains/DevOps/k8s/pvpvc.md)
- [Kubernetes Network](http://github.com/rlaope/estudy/blob/master/brains/DevOps/k8s/network.md)
- [RBAC, Security Policy](http://github.com/rlaope/estudy/blob/master/brains/DevOps/k8s/security.md)
- [애자일(Agile) 방법론](http://github.com/rlaope/estudy/blob/master/brains/DevOps/agile.md)
  - [K8s 배포 전략, Probe](http://github.com/rlaope/estudy/blob/master/brains/DevOps/k8s/deploy.md)
- [클라우드 아키텍처 Cloud Architecture](http://github.com/rlaope/estudy/blob/master/brains/DevOps/cloud_architecture.md)
  - [Node Components](http://github.com/rlaope/estudy/blob/master/brains/DevOps/k8s/node.md)
- [하이브리드 클라우드 Hybird Cloud](http://github.com/rlaope/estudy/blob/master/brains/DevOps/hybrid.md)
- [테스트의 종류 알아보기](http://github.com/rlaope/estudy/blob/master/brains/정보처리/test.md)
- [워크스루와 인스펙션](http://github.com/rlaope/estudy/blob/master/brains/정보처리/검토.md)
- [TDD란 (테스트 주도 개발)](http://github.com/rlaope/estudy/blob/master/brains/Back-End/test/tdd.md)
- [깃허브 액션 GitHub Actions](http://github.com/rlaope/estudy/blob/master/brains/DevOps/gitaction.md)
- [AWS(Amazon Web Service)](http://github.com/rlaope/estudy/blob/master/brains/DevOps/aws.md)
  - [EC2(Elastic Compute Cloud)](http://github.com/rlaope/estudy/blob/master/brains/DevOps/ec2.md) 
- [EC2의 가격 정책과 타입 종류](http://github.com/rlaope/estudy/blob/master/brains/DevOps/aws/EC2Price.md)
- [EBS, Instance Store, AMI](http://github.com/rlaope/estudy/blob/master/brains/DevOps/aws/ebs.md)
- [AWS 보안 그룹 Security Group](http://github.com/rlaope/estudy/blob/master/brains/DevOps/aws/securitygroup.md)
- [AWS ELB (Elastic Load Balancer), Sticky Session](http://github.com/rlaope/estudy/blob/master/brains/DevOps/aws/elb.md)
- [오토 스케일링 (Auto Scaling) 구성과 순서도](http://github.com/rlaope/estudy/blob/master/brains/DevOps/aws/as.md)
- [VPC(Virtual Private Cloud)와 구성요소](http://github.com/rlaope/estudy/blob/master/brains/DevOps/aws/vpc.md)
- [NAT, NAPT 그리고 AWS NAT Gateway](http://github.com/rlaope/estudy/blob/master/brains/DevOps/aws/natgateway.md)
- [AWS 라우팅 테이블 개념과 구성](http://github.com/rlaope/estudy/blob/master/brains/DevOps/aws/라우팅테이블.md)
- [고가용성과 장애내구성, 재해 복구, 확장성과 탄력성](http://github.com/rlaope/estudy/blob/master/brains/DevOps/aws/고가용성_장애내구성.md)
- [AWS RDS(Relation Database Service)](http://github.com/rlaope/estudy/blob/master/brains/DevOps/aws/rds.md)
- [Elastic IP, ENI(Elastic Network Interface)](http://github.com/rlaope/estudy/blob/master/brains/DevOps/aws/elastic_ip.md)
- [System Manager Session Manager](http://github.com/rlaope/estudy/blob/master/brains/DevOps/aws/session_manager.md)
- [Amazon Aurora](http://github.com/rlaope/estudy/blob/master/brains/DevOps/aws/aurora.md)
- [AWS Aurora 2nd](http://github.com/rlaope/estudy/blob/master/brains/DevOps/aws/aurora2.md)
- [CloudWatch vs CloudTrail](http://github.com/rlaope/estudy/blob/master/brains/DevOps/aws/cloudwatch.md)
- [AWS SES(Simple Email Service)](http://github.com/rlaope/estudy/blob/master/brains/DevOps/aws/SES.md)
- [AWS SNS(Simple Notification Service)](http://github.com/rlaope/estudy/blob/master/brains/DevOps/aws/SNS.md)
- [AWS SQS(Simple Queue Service)](http://github.com/rlaope/estudy/blob/master/brains/DevOps/aws/SQS.md)
- [AWS SQS 속도와 규모 조정을 위한 최적화 개선](http://github.com/rlaope/estudy/blob/master/brains/DevOps/aws/sqs_optimize.md)
- [AWS 클라우드 프론트 CloudFront](http://github.com/rlaope/estudy/blob/master/brains/DevOps/aws/cloudfront.md)
- [AWS ECR(Elastic Container Registry)](http://github.com/rlaope/estudy/blob/master/brains/DevOps/aws/ecr.md)
- [AWS ELK(Elastic Search Logstash Kibana)](http://github.com/rlaope/estudy/blob/master/brains/DevOps/aws/ELK.md)
- [Bastion 서버로 Private EC2에 접속하는 방법 + Hi-v2 트러블 슈팅](http://github.com/rlaope/estudy/blob/master/brains/DevOps/aws/bastion.md)
- [CloudWatch](http://github.com/rlaope/estudy/blob/master/brains/DevOps/aws/cloudwatch2.md)
- [EKS](http://github.com/rlaope/estudy/blob/master/brains/DevOps/aws/eks/eks.md)
  - [EKS VPC CNI](http://github.com/rlaope/estudy/blob/master/brains/DevOps/aws/eks/cni.md)
- [파드간 통신 과정](http://github.com/rlaope/estudy/blob/master/brains/DevOps/aws/eks/communicate.md)
- [ALB Contorller](http://github.com/rlaope/estudy/blob/master/brains/DevOps/aws/eks/alb_controller.md)
- [NLB, ALB 생성과 삭제](http://github.com/rlaope/estudy/blob/master/brains/DevOps/aws/eks/nlb_alb.md)
- [Site to Site VPN](http://github.com/rlaope/estudy/blob/master/brains/DevOps/aws/s2s.md)
- [DX(Direct Connect)](http://github.com/rlaope/estudy/blob/master/brains/DevOps/aws/dx.md)
- [모놀리식 아키텍처 (Monolithic Architecture)](http://github.com/rlaope/estudy/blob/master/brains/Back-End/backend/mono.md)
- [APM(Application Performance Management)](http://github.com/rlaope/estudy/blob/master/brains/DevOps/apm.md)
- [gRPC, RPC, 작동원리, HTTP API 비교](http://github.com/rlaope/estudy/blob/master/brains/DevOps/grpc.md)
- [RabbitMQ](http://github.com/rlaope/estudy/blob/master/brains/DevOps/rabbitmq.md)
- [Blue/Green Deployment, Architecture](http://github.com/rlaope/estudy/blob/master/brains/DevOps/blue_green.md)
- [Nginx](http://github.com/rlaope/estudy/blob/master/brains/DevOps/nginx.md)
- [ELK와 로깅 구성](http://github.com/rlaope/estudy/blob/master/brains/DevOps/ELK.md)
- [Prometheus, Grafana](http://github.com/rlaope/estudy/blob/master/brains/DevOps/prometheus_grafana.md)
- [Exporter - 모니터링 에이전트](http://github.com/rlaope/estudy/blob/master/brains/DevOps/exporter.md)
- [블루/그린 배포](http://github.com/rlaope/estudy/blob/master/brains/DevOps/bg.md)
- [서버 이중화 구조](http://github.com/rlaope/estudy/blob/master/brains/DevOps/이중화.md)
- [GitOps](http://github.com/rlaope/estudy/blob/master/brains/DevOps/gitops.md)
- [HCL](http://github.com/rlaope/estudy/blob/master/brains/DevOps/hcl/hcl.md)
  - [[Terraform] EKS 배포 프로젝트](https://github.com/rlaope/hcl-eks-gitops)
- [Terraform Custom Condition(precondition, postcondition)](http://github.com/rlaope/estudy/blob/master/brains/DevOps/hcl/condition.md)
  - [[Terraform] 작동 원리](http://github.com/rlaope/estudy/blob/master/brains/DevOps/hcl/terraform_work.md)
- [Terraform dynamic block](http://github.com/rlaope/estudy/blob/master/brains/DevOps/hcl/dynamic_block.md)
- [[Terraform] state, remote_state, backend](http://github.com/rlaope/estudy/blob/master/brains/DevOps/hcl/state.md)
- [MicroService Monitoring System (cc. Loki/Grafana)](http://github.com/rlaope/estudy/blob/master/brains/DevOps/msa_monitoring.md)
- [Presto](http://github.com/rlaope/estudy/blob/master/brains/DevOps/aws/presto.md)
- [MSA에서의 Service discovery 패턴](http://github.com/rlaope/estudy/blob/master/brains/DevOps/service_discovery.md)
- [IAM(Identity and Access Management)](http://github.com/rlaope/estudy/blob/master/brains/DevOps/aws/iam.md)
---

#### SRE

- [Full GC Hang Alert & Task 시스템 최적화 사례](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/hang.md)
- [Pod Pending 상태의 주요 원인](http://github.com/rlaope/estudy/blob/master/brains/SRE/question/q_1.md)
- [kube-proxy의 역할](http://github.com/rlaope/estudy/blob/master/brains/SRE/question/q_2.md)
- [iptables와 ipvs의 차이](http://github.com/rlaope/estudy/blob/master/brains/SRE/question/q_3.md)
- [CNI(Container Network Interface)](http://github.com/rlaope/estudy/blob/master/brains/SRE/question/q_4.md)
- [Pod 간 노드 통신 패킷 흐름](http://github.com/rlaope/estudy/blob/master/brains/SRE/question/q_5.md)
- [HPA(Horizontal Pod Autoscaler) 동작 원리](http://github.com/rlaope/estudy/blob/master/brains/SRE/question/q_6.md)
- [VPA 사용 시 발생할 수 있는 위험 요소](http://github.com/rlaope/estudy/blob/master/brains/SRE/question/q_7.md)
- [PDB(Pod Disruption Budget)의 필요성](http://github.com/rlaope/estudy/blob/master/brains/SRE/question/q_8.md)
- [Node Pressure(OOM, DiskPressure) 발생 시 동작](http://github.com/rlaope/estudy/blob/master/brains/SRE/question/q_9.md)
- [CrashLoopBackOff 원인 분류](http://github.com/rlaope/estudy/blob/master/brains/SRE/question/q_10.md)
- [StatefulSet과 Deployment 비교](http://github.com/rlaope/estudy/blob/master/brains/SRE/question/q_11.md)
- [Ingress와 Service 비교](http://github.com/rlaope/estudy/blob/master/brains/SRE/question/q_12.md)
- [kubelet의 Pod 관리 과정](http://github.com/rlaope/estudy/blob/master/brains/SRE/question/q_13.md)
- [Liveness·Readiness·Startup Probe 비교](http://github.com/rlaope/estudy/blob/master/brains/SRE/question/q_14.md)
- [containerd의 역할](http://github.com/rlaope/estudy/blob/master/brains/SRE/question/q_15.md)
- [OOM Killer 동작 방식](http://github.com/rlaope/estudy/blob/master/brains/SRE/question/q_16.md)
- [epoll이 select/poll보다 효율적인 이유](http://github.com/rlaope/estudy/blob/master/brains/SRE/question/q_17.md)
- [CPU Load Average 해석](http://github.com/rlaope/estudy/blob/master/brains/SRE/question/q_18.md)
- [cgroup의 CPU·메모리 제어 방식](http://github.com/rlaope/estudy/blob/master/brains/SRE/question/q_19.md)
- [파일 디스크립터 고갈 시 나타나는 증상](http://github.com/rlaope/estudy/blob/master/brains/SRE/question/q_20.md)
- [TCP TIME_WAIT 증가의 원인](http://github.com/rlaope/estudy/blob/master/brains/SRE/question/q_21.md)
- [DNS Lookup Timeout 발생 요인](http://github.com/rlaope/estudy/blob/master/brains/SRE/question/q_22.md)
- [Swap 사용이 위험한 이유](http://github.com/rlaope/estudy/blob/master/brains/SRE/question/q_23.md)
- [NUMA 구조에서 발생하는 성능 문제](http://github.com/rlaope/estudy/blob/master/brains/SRE/question/q_24.md)
- [스레드 풀 사이즈 산정 원리](http://github.com/rlaope/estudy/blob/master/brains/SRE/question/q_25.md)
- [Prometheus Pull 방식의 장점](http://github.com/rlaope/estudy/blob/master/brains/SRE/question/q_26.md)
- [Alertmanager의 역할](http://github.com/rlaope/estudy/blob/master/brains/SRE/question/q_27.md)
- [p95·p99 레이턴시 차이 분석](http://github.com/rlaope/estudy/blob/master/brains/SRE/question/q_28.md)
- [High Cardinality의 위험성](http://github.com/rlaope/estudy/blob/master/brains/SRE/question/q_29.md)
- [로그 수집 시스템 필터링의 필요성](http://github.com/rlaope/estudy/blob/master/brains/SRE/question/q_30.md)
- [Jaeger·Tempo의 역할](http://github.com/rlaope/estudy/blob/master/brains/SRE/question/q_31.md)
- [OpenTelemetry 구조](http://github.com/rlaope/estudy/blob/master/brains/SRE/question/q_32.md)
- [SLO와 SLI 비교](http://github.com/rlaope/estudy/blob/master/brains/SRE/question/q_33.md)
- [MTU Mismatch 발생 시 증상](http://github.com/rlaope/estudy/blob/master/brains/SRE/question/q_34.md)
- [Retry 폭주(Thundering Herd)의 위험성](http://github.com/rlaope/estudy/blob/master/brains/SRE/question/q_35.md)
- [Connection Pool 고갈 증상](http://github.com/rlaope/estudy/blob/master/brains/SRE/question/q_36.md)
- [Nginx 502·504 차이](http://github.com/rlaope/estudy/blob/master/brains/SRE/question/q_37.md)
- [Slow Query 탐지 방법](http://github.com/rlaope/estudy/blob/master/brains/SRE/question/q_38.md)
- [Thread Overflow 발생 원인](http://github.com/rlaope/estudy/blob/master/brains/SRE/question/q_39.md)
- [GC Pause 증가의 근본 원인](http://github.com/rlaope/estudy/blob/master/brains/SRE/question/q_40.md)
- [장애 대응 시 우선순위 판단 기준](http://github.com/rlaope/estudy/blob/master/brains/SRE/question/q_41.md)
- [Incident Severity 산정 방식](http://github.com/rlaope/estudy/blob/master/brains/SRE/question/q_42.md)
- [롤백 전략 수립 방법](http://github.com/rlaope/estudy/blob/master/brains/SRE/question/q_43.md)
- [Blue/Green Deployment vs Canary Deployment](http://github.com/rlaope/estudy/blob/master/brains/SRE/question/q_44.md)
- [DNS Failover 구성 방법](http://github.com/rlaope/estudy/blob/master/brains/SRE/question/q_45.md)
- [재발 방지 대책(Runbook 포함) 작성 방법](http://github.com/rlaope/estudy/blob/master/brains/SRE/question/q_46.md)
- [Incident Flow: 감지 → Triage → Mitigation → RCA](http://github.com/rlaope/estudy/blob/master/brains/SRE/question/q_47.md)
- [Alert Fatigue 감소 전략](http://github.com/rlaope/estudy/blob/master/brains/SRE/question/q_48.md)
- [배포 자동화 시 고려해야 할 안정성 체크](http://github.com/rlaope/estudy/blob/master/brains/SRE/question/q_49.md)
- [SLA·Error Budget 적용 방식](http://github.com/rlaope/estudy/blob/master/brains/SRE/question/q_50.md)

---

#### Languages

- [Java](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/JAVA.md)
  - [객체지향 프로그래밍](http://github.com/rlaope/estudy/blob/master/brains/정보처리/Java.md)
- [JVM 메모리 구조 알아보기](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/jvm.md)
- [JMM(Java Memory Model)](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/jmm.md)
- [JVM 메모리 모델](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/jvmm.md)
- [JVM Garbage Collection 구조와 동작](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/gc.md)
- [GC의 종류와 각각의 차이점](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/gc_kind.md)
- [종류별 Garbage Collector 동작 방식](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/gc_4.md)
- [G1GC - Garbage First Garbage Collector](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/g1gc.md)
- [Java String Pool](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/string_pool.md)
- [객체지향의 4가지 특징](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/4특징.md)
- [객체지향 설계의 5원칙(SOLID)](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/5원칙.md)
- [클래스와 인스턴스 개념과 차이](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/coi.md)
- [생성자, new 객체 생성](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/생성자.md)
- [오버라이딩과 오버로딩](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/overding.md)
- [다형성 (Polymorphism)](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/다형성.md)
- [Date, SimpleDateFormat 현재 날짜, 시간 출력](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/date.md)
- [컬렉션 프레임워크 종류와 사용법](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/collection.md)
- [예외 처리 (Exception)](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/exception.md)
- [RuntimeException & Exception](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/runtime.md)
- [HashMap 메소드 및 사용법](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/hashmap.md)
- [옵셔널(Optional) 클래스 알아보기](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/optional.md)
- [Web 서블릿(Servlet) 이란?](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/servlet.md) 
- [StringBuilder 사용법과 주요 메서드](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/StringBuilder.md)
- [래퍼 클래스(Wrapper Class), 박싱 언박싱](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/wrapper.md)
- [Java Generic](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/generic.md)
- [SocketAdress 클래스 & NetworkInterface 클래스](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/javanet.md)
- [Java String, StringBuilder, StringBuffer 차이 알아보기](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/stringB.md)
- [POJO (Plain Old Java Object)](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/pojo.md)
- [자바 리플랙션 Reflection 개념과 사용방법](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/reflection.md)
- [자바 익스큐터 java Executors](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/executor.md)
- [java Callable, Future](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/callable_future.md)
- [자바 Cleaner, PhantomReference Class](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/cleaner.md)
- [OutOfMemoryError가 발생했을 때 해결하는 방법](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/oom.md)
- [자바의 네 가지 참조 유형(Strong, Weak, Soft, Phantom)](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/reference.md)
- [Java 8 Functional Interface](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/functional_interface.md)
- [Java에서 제공하는 기본적인 Functional Interface](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/functional_interface2.md)
- [Reactive Streams API, back-pressure](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/reactive_stream.md)
- [Cold Publisher & Hot Publisher](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/hot_cold_publisher.md)
- [Java AIO](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/aio.md)
- [JDK Proxy, CGLib Proxy](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/jdkproxy_cglib.md)
- [Hotspot VM, JIT Compiler 그리고 한계](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/hotspotvm.md)
- [GraalVM](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/graal.md)
- [Native Image](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/native_image.md)
- [네이티브 이미지의 메모리 최적화](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/graal_memory.md)
- [Java의 예외 생성 비용, 비용 절감 방법](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/exception_cost.md)
- [JVM Warm Up - 배포 직후 Latancy 성능 저하 원인](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/warmup1.md)
- [JVM Warm Up 적용하기](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/warmup2.md)
- [ReentrantLock, Condition](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/lock.md)
- [JIT Compiler(c1, c2)](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/jit.md)
- [Native Memory Tracking](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/native_memory.md)
- [jemalloc](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/jemalloc.md)
- [jemalloc, arena, thread cache, memory fragmentation](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/jemalloc2.md)
- [JVM Heap Object Headers on Internals](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/jvm_heap_header.md)
- [JVM safepoint](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/safepoint.md)
- [Bias Locking, Revocation](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/biaslock.md)
- [CAS (Compare And Swap)](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/cas.md)
- [vDSO(virtual Dynamic Shared Object)](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/vdso.md)
- [Object Header Mark Word](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/markword.md)
- [GC Write Barrier](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/writebarrier.md)
- [Card Table](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/cardtable.md)
- [Incremental Update](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/incru.md)
- [Parallel GC Tuning](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/parg.md)
- [CMS GC(+튜닝 전략 parallel, cms)](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/cms.md)
- [G1GC](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/g1.md)
  - [Evacuation Failure](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/evfailed.md)
- [G1GC는 왜 Incremental Update가 아니라 SATB를 선택했는가](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/whysatb.md)
- [Mixed GC](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/mixedgc.md)
- [Concurrent Mark](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/cm.md)
- [G1GC OpenJDK 8 vs 11](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/8g1gc.md)
- [Humongous Object, Mixed GC](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/humong.md)
- [ZGC](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/zgc.md)
  - [G1GC, ZGC 성능 비교 테스트](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/gctest.md)
- [Marked0/1, Good/Bad Color (TODO)](http://github.com/rlaope/estudy/blob/master/brains/JVM/marked_pointer.md)
- [Parallel GC to G1GC](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/g1pagc.md)
- [TLAB(Thread-Local Allocation Buffer)](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/tlab.md)
- [Safepoint, Polling Page](http://github.com/rlaope/estudy/blob/master/brains/JVM/safepoint.md)
- [Reactive Streams](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/reactive_steam.md)
- [HotSpot JVM ZGC Barrier, NUMA 메모리 할당 및 Safepoint 동작](http://github.com/rlaope/estudy/blob/master/brains/JVM/memory_concept_hard.md)
- [객체의 생명주기 (생성, 사용, 소멸)](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/lifecycle.md)
- [자바 Object 클래스의 메소드](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/object.md)
- [PGO(Profile-Guided Optimization)](http://github.com/rlaope/estudy/blob/master/brains/JVM/pgo.md)
- [자바에서 Finalize 메서드의 역할은 무엇일까요?](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/finalize.md)
- [JVM이 구현하는 다형성 탈가상화 Devirtualization](http://github.com/rlaope/estudy/blob/master/brains/JVM/devirtual.md)
- [추상 메서드와 추상 클래스](http://github.com/rlaope/estudy/blob/master/brains/Back-End/JAVA/abstract.md)
- [JVM의 5가지 메서드 호출 명령어(vtable, itable)](http://github.com/rlaope/estudy/blob/master/brains/JVM/jvm_command.md)
- [JMM과 하드웨어 교차점](http://github.com/rlaope/estudy/blob/master/brains/JVM/jmm.md)
- [JVM Observability 도구별 원리 해부학](http://github.com/rlaope/estudy/blob/master/brains/JVM/jvm_observability.md)
- [Kotlin](http://github.com/rlaope/estudy/blob/master/brains/JVM/jit_graal.md)
  - [Kotlin DSL, gradle.kts](http://github.com/rlaope/estudy/blob/master/brains/Back-End/kotlin/dsl.md)
- [mapOf(), to로 Pair 인스턴스 생성하기](http://github.com/rlaope/estudy/blob/master/brains/Back-End/kotlin/toPair.md)
- [코틀린에서의 객체지향 프로그래밍](http://github.com/rlaope/estudy/blob/master/brains/Back-End/kotlin/kotlinoop.md)
- [코틀린 함수형 프로그래밍](http://github.com/rlaope/estudy/blob/master/brains/Back-End/kotlin/fun.md)
- [코틀린 컬렉션즈 프레임워크](http://github.com/rlaope/estudy/blob/master/brains/Back-End/kotlin/collection.md)
- [대리자 delegate, by, lazy](http://github.com/rlaope/estudy/blob/master/brains/Back-End/kotlin/delegate.md)
  - [고차 함수 (High-order-function)](https://velog.io/@hope0206/kotlin-%EA%B3%A0%EC%B0%A8%ED%95%A8%EC%88%98-High-order-function)
- [스코프 함수 (Scope Function)](http://github.com/rlaope/estudy/blob/master/brains/Back-End/kotlin/scope_function.md)
- [Kotlin 시퀀스와 지연 계산 (Sequences and Lazy Evaluation)](http://github.com/rlaope/estudy/blob/master/brains/Back-End/kotlin/sequence.md)
- [Kotlin 함수형 인터페이스와 SAM 생성자](http://github.com/rlaope/estudy/blob/master/brains/Back-End/kotlin/sam.md)
- [kapt와 annotation processor](http://github.com/rlaope/estudy/blob/master/brains/Back-End/kotlin/kapt.md)
- [코틀린에서는 왜 Lombok 라이브러리를 사용할 수 없을까?](http://github.com/rlaope/estudy/blob/master/brains/Back-End/kotlin/lombokcant.md)
- [Kotlin으로 Spring Framework 사용하기](http://github.com/rlaope/estudy/blob/master/brains/Back-End/kotlin/kopring.md)
- [data 클래스로 persistence 구현하기](http://github.com/rlaope/estudy/blob/master/brains/Back-End/kotlin/datapersist.md)
- [@JvmField, @JvmStatic 어노테이션](http://github.com/rlaope/estudy/blob/master/brains/Back-End/kotlin/jvmannotation.md)
- [kotest를 사용해서 테스트 코드 작성하기](http://github.com/rlaope/estudy/blob/master/brains/Back-End/kotlin/kotest.md)
- [Kotlin 코루틴 (Coroutine)과 동시성 프로그래밍](http://github.com/rlaope/estudy/blob/master/brains/Back-End/kotlin/coroutine.md)
- [내가 제일 좋아하는 Kotlin의 companion object ❤️](http://github.com/rlaope/estudy/blob/master/brains/Back-End/kotlin/companion.md)
- [Kotlin Generics 공변성, 반공변성, 무변성](http://github.com/rlaope/estudy/blob/master/brains/Back-End/kotlin/공변성.md)
- [Kotlin Generics 스타 프로젝션, reified 자료형](http://github.com/rlaope/estudy/blob/master/brains/Back-End/kotlin/starpro.md)
- [sortedWith, Comparator 정렬 람다식 예제](http://github.com/rlaope/estudy/blob/master/brains/Back-End/kotlin/sortedWith.md)
- [Kotlin runCatching과 Result 타입](http://github.com/rlaope/estudy/blob/master/brains/Back-End/kotlin/runcatching.md)
- [Kotlin에서 Unit과 Nothing의 차이점](http://github.com/rlaope/estudy/blob/master/brains/Back-End/kotlin/unit_nothing.md)
- [Kotlin에서 싱글톤 클래스를 어떻게 생성할까요?](http://github.com/rlaope/estudy/blob/master/brains/Back-End/kotlin/singleton.md)
- [companion object와 object의 차이점은 무엇일까요?](http://github.com/rlaope/estudy/blob/master/brains/Back-End/kotlin/companion_and_object.md)
- [클래스 외부의 함수(A package-level/ Top-level 함수)](http://github.com/rlaope/estudy/blob/master/brains/Back-End/kotlin/top_level.md)
- [Kotlin Class, Field vs Property](http://github.com/rlaope/estudy/blob/master/brains/Back-End/kotlin/field_property.md)
- [Kotlin Delegation으로 결합도 낮추기](http://github.com/rlaope/estudy/blob/master/brains/Back-End/kotlin/delegate2.md)
- [lateinit과 Delegates.notNull<>()로 적절한 null 처리하기](http://github.com/rlaope/estudy/blob/master/brains/Back-End/kotlin/effectivenull.md)
- [.close()가 필요한 클래스를 사용할 때, use로 효율적으로 사용하기](http://github.com/rlaope/estudy/blob/master/brains/Back-End/kotlin/use.md)
- [infix, inline function](http://github.com/rlaope/estudy/blob/master/brains/Back-End/kotlin/inline.md)
- [Kotlin Sealed Class](http://github.com/rlaope/estudy/blob/master/brains/Back-End/kotlin/sealed.md)
- [inline fun 함수를 사용해 고차 함수 최적화](http://github.com/rlaope/estudy/blob/master/brains/Back-End/kotlin/inline2.md)
- [Coroutine](http://github.com/rlaope/estudy/blob/master/brains/Back-End/kotlin/coroutine/coroutine.md)
- [코틀린이란 무엇이며 왜 필요한가?](http://github.com/rlaope/estudy/blob/master/brains/Back-End/kotlin/kotlin.md)
  - [CoroutineDispatcher](http://github.com/rlaope/estudy/blob/master/brains/Back-End/kotlin/coroutine/coroutinedispatcher.md)
- [launch, async](http://github.com/rlaope/estudy/blob/master/brains/Back-End/kotlin/coroutine/launch.md)
- [susepnd fun](http://github.com/rlaope/estudy/blob/master/brains/Back-End/kotlin/coroutine/suspend.md)
- [Coroutine Job을 Lazy하게 만들기](http://github.com/rlaope/estudy/blob/master/brains/Back-End/kotlin/coroutine/lazy.md)
- [Coroutine Job 상태 관리](http://github.com/rlaope/estudy/blob/master/brains/Back-End/kotlin/coroutine/state.md)
- [Coroutine Job 상태 변수](http://github.com/rlaope/estudy/blob/master/brains/Back-End/kotlin/coroutine/state_variable.md)
- [CoroutineContext](http://github.com/rlaope/estudy/blob/master/brains/Back-End/kotlin/coroutine/coroutine_context.md)
- [Golang](http://github.com/rlaope/estudy/blob/master/brains/Back-End/go)
  - [Go Handle, Handler, HandleFunc 이해](http://github.com/rlaope/estudy/blob/master/brains/Back-End/go/http_handler.md)
- [Golang에서의 포인터와 역참조](http://github.com/rlaope/estudy/blob/master/brains/Back-End/go/pointer.md)
- [Go 데이터베이스 Sqlite3 사용하기](http://github.com/rlaope/estudy/blob/master/brains/Back-End/go/sqlite.md)
- [gorilla/mux를 사용한 REST API 서버](http://github.com/rlaope/estudy/blob/master/brains/Back-End/go/mux.md)
- [JavaScript](https://github.com/rlaope/estudy/blob/master/brains/Front-End/JS/)
  - [JavaScript 함수와 함수의 종류](https://github.com/rlaope/estudy/blob/master/brains/Front-End/JS/function.md)
- [객체 Object](https://github.com/rlaope/estudy/blob/master/brains/Front-End/JS/Object.md)
- [프로토타입이란?](https://github.com/rlaope/estudy/blob/master/brains/Front-End/JS/Object2.md)
- [가비지 컬렉션이란?](https://github.com/rlaope/estudy/blob/master/brains/Front-End/JS/garbage.md)
- [객체 메소드 정리](https://github.com/rlaope/estudy/blob/master/brains/Front-End/JS/Object3.md)
- [클래스란 무엇일까?](https://github.com/rlaope/estudy/blob/master/brains/Front-End/JS/class.md)
- [String Method](https://github.com/rlaope/estudy/blob/master/brains/Front-End/JS/typeString.md) 
- [Math 메서드 정리](https://github.com/rlaope/estudy/blob/master/brains/Front-End/JS/Number.md)
- [배열 메소드 정리](https://github.com/rlaope/estudy/blob/master/brains/Front-End/JS/array.md)
- [배열 메소드 정리 2](https://github.com/rlaope/estudy/blob/master/brains/Front-End/JS/array2.md)
- [데이터 불변성](https://github.com/rlaope/estudy/blob/master/brains/Front-End/JS/Immutability.md)
- [구조 분해 할당](https://github.com/rlaope/estudy/blob/master/brains/Front-End/JS/destruct.md)
- [export 사용법 정리](https://github.com/rlaope/estudy/blob/master/brains/Front-End/JS/export.md)
- [import 사용법 정리](https://github.com/rlaope/estudy/blob/master/brains/Front-End/JS/import.md)
- [Lodash란 무엇일까?](https://github.com/rlaope/estudy/blob/master/brains/Front-End/JS/Lodash.md)
- [JSON 알아보기](https://github.com/rlaope/estudy/blob/master/brains/Front-End/JS/JSON.md)
- [Storage LocalStorage](https://github.com/rlaope/estudy/blob/master/brains/Front-End/JS/Storage.md)
- [정규표현식 문법 정리](https://github.com/rlaope/estudy/blob/master/brains/Front-End/JS/정규표현식.md)
- [DOM 이란 무엇일까?](https://github.com/rlaope/estudy/blob/master/brains/Front-End/JS/DOM.md)
- [DOM API와 종류](https://github.com/rlaope/estudy/blob/master/brains/Front-End/JS/DOM2.md)
- [Promise 알아보기](https://github.com/rlaope/estudy/blob/master/brains/Front-End/JS/promise.md)
- [ajax 알아보기](https://github.com/rlaope/estudy/blob/master/brains/Front-End/JS/ajax.md)
- [fetch API 알아보기](https://github.com/rlaope/estudy/blob/master/brains/Front-End/JS/fetch.md)
- [TypeScript](https://github.com/rlaope/estudy/blob/master/brains/Front-End/TS/TypeScript.md)
  - [Class](http://github.com/rlaope/estudy/blob/master/brains/Front-End/JS/TS_class.md)
- [Basic_Types 정리](https://github.com/rlaope/estudy/blob/master/brains/Front-End/TS/TS_Type.md)
- [Constructor(생성자) , 접근제한자 , Getter 와 Setter](http://github.com/rlaope/estudy/blob/master/brains/Front-End/JS/constructor.md)
- [Basic_Function 정리](https://github.com/rlaope/estudy/blob/master/brains/Front-End/TS/TS_function.md)
  - [작성자와 사용자의 관점으로 코드 바라보기](https://github.com/rlaope/Study_TypeScript/blob/main/Type_System/TypeSystem.md)
  - [Structural Type System vs Nominal Type System](https://github.com/rlaope/Study_TypeScript/blob/main/Type_System/TypeSystem2.md)
  - [타입 호환성 Type Compatibility](https://github.com/rlaope/Study_TypeScript/blob/main/Type_System/TypeCompatibility.md)
  - [타입 별칭 Type Alias](https://github.com/rlaope/Study_TypeScript/blob/main/Type_System/TypeAlias.md)
  - [TypeScript_Compiler](https://github.com/rlaope/Study_TypeScript/blob/main/Type_System/compiler.md)
  - [constructor, Access Modifier, Getter & Setter](https://github.com/rlaope/Study_TypeScript/tree/main/class/example6.ts)
- [인터페이스 (interface)](https://github.com/rlaope/estudy/blob/master/brains/Front-End/TS/TS_interface.md)
- [인터페이스2 (interface2)](https://github.com/rlaope/estudy/blob/master/brains/Front-End/TS/TS_interface2.md)
  - [클래스 (class)](https://github.com/rlaope/Study_TypeScript/tree/main/class)
- [Generic 알아보기](https://github.com/rlaope/estudy/blob/master/brains/Front-End/TS/TS_generic.md)
- [Component](http://github.com/rlaope/estudy/blob/master/brains/Front-End/React/component.md)

---

#### Frameworks

- [Node.js](http://github.com/rlaope/estudy/blob/master/brains/Back-End/Node/node.md)
- [Npm(Node.js) - 기초 명령어 사용법 정리](http://github.com/rlaope/estudy/blob/master/brains/Back-End/Node/npm.md)
- [Spring Frameworks MVC](http://github.com/rlaope/estudy/blob/master/brains/Back-End/spring/mvc.md)
  - [React](http://github.com/rlaope/estudy/blob/master/brains/Front-End/React/react.md)
- [Controller, Service, Repository](http://github.com/rlaope/estudy/blob/master/brains/Back-End/spring/cre.md)
  - [TypeScript 컴파일러](http://github.com/rlaope/estudy/blob/master/brains/Front-End/TS/TS_compiler.md)
- [IoC(Inversion of Controll)](http://github.com/rlaope/estudy/blob/master/brains/Back-End/spring/ioc.md)
  - [conflict - 충돌 해결](http://github.com/rlaope/estudy/blob/master/brains/Back-End/git/conflict.md)
- [Spring Bean](http://github.com/rlaope/estudy/blob/master/brains/Back-End/spring/bean.md)
  - [git log - 이력확인](http://github.com/rlaope/estudy/blob/master/brains/Back-End/git/log.md)
- [Spring AOP (Aspect Oriented Programming)](http://github.com/rlaope/estudy/blob/master/brains/Back-End/spring/aop.md)
  - [git 기본 명령어 정리 2](http://github.com/rlaope/estudy/blob/master/brains/Back-End/git/basic2.md)
- [Spring AspectJ](http://github.com/rlaope/estudy/blob/master/brains/Back-End/spring/aspectj.md)
  - [package.json 생성](http://github.com/rlaope/estudy/blob/master/brains/Back-End/Node/npmjson.md)
- [Spring Frameworks' Annotation](http://github.com/rlaope/estudy/blob/master/brains/Back-End/spring/annotation.md)
  - [pull request](http://github.com/rlaope/estudy/blob/master/brains/Back-End/git/request.md)
- [Spring JDBC, DataSource](http://github.com/rlaope/estudy/blob/master/brains/Back-End/spring/jdbc.md)
  - [version](http://github.com/rlaope/estudy/blob/master/brains/Back-End/git/version.md)
- [(Spring Package Structure) - 계층형 vs 도메인형](http://github.com/rlaope/estudy/blob/master/brains/Back-End/spring/package.md)
  - [기타 명령어](http://github.com/rlaope/estudy/blob/master/brains/Back-End/Node/npm2.md)
- [Lombok Library](http://github.com/rlaope/estudy/blob/master/brains/Back-End/spring/lombok.md) 
  - [깃허브 용어정리](http://github.com/rlaope/estudy/blob/master/brains/Back-End/git/%EC%9A%A9%EC%96%B4.md)
- [Spring boot @Builder, Builder Pattern](http://github.com/rlaope/estudy/blob/master/brains/Back-End/spring/builder.md)
  - [다른사람 Repo 관리](http://github.com/rlaope/estudy/blob/master/brains/Back-End/git/pushR.md)
- [Spring Frameworks URL Mapping](http://github.com/rlaope/estudy/blob/master/brains/Back-End/spring/mapping.md)
  - [브랜치 Brnach](http://github.com/rlaope/estudy/blob/master/brains/Back-End/git/branch.md)
- [Spring Security Access Token & Refresh Token](http://github.com/rlaope/estudy/blob/master/brains/Back-End/spring/token.md)
  - [서버 구축하기](http://github.com/rlaope/estudy/blob/master/brains/Back-End/Node/server.md)
- [Log 관리, Slf4j Logger](http://github.com/rlaope/estudy/blob/master/brains/Back-End/backend/logger.md)
  - [원격 저장소](http://github.com/rlaope/estudy/blob/master/brains/Back-End/git/pull.md)
- [Jwt (Json Web Token)](http://github.com/rlaope/estudy/blob/master/brains/Back-End/spring/jwt.md)
  - [이전 버전으로 되돌리기 ,](http://github.com/rlaope/estudy/blob/master/brains/Back-End/git/revert.md)
- [Spring Validation을 이용한 유효성 검증](http://github.com/rlaope/estudy/blob/master/brains/Back-End/spring/valid.md)
  - [클래스형 컴포넌트](http://github.com/rlaope/estudy/blob/master/brains/Front-End/React/classcompo.md)
- [Spring boot @ExceptionHandler를 통한 예외처리](http://github.com/rlaope/estudy/blob/master/brains/Back-End/spring/exception.md)
  - [패키지 설치 / 삭제 명령어](http://github.com/rlaope/estudy/blob/master/brains/Back-End/Node/npm1.md)
- [(Spring boot + Security) SecurityConfig 설정하기](http://github.com/rlaope/estudy/blob/master/brains/Back-End/spring/scuconfig.md)
  - [함수형 컴포넌트](http://github.com/rlaope/estudy/blob/master/brains/Front-End/React/funcompo.md)
- [Swagger를 활용한 API 문서 자동화](http://github.com/rlaope/estudy/blob/master/brains/Back-End/spring/swagger.md)
- [IoC, DI, Spring Container, Bean 완벽하게 알아보자](http://github.com/rlaope/estudy/blob/master/brains/Back-End/spring/iocdi.md)
- [AOP(Aspect Oriented Programming) 대체 뭘까?](http://github.com/rlaope/estudy/blob/master/brains/Back-End/spring/aop_basic.md)
- [디스패처 서블릿 Dispatcher-Servlet의 개념과 동작 과정 알아보기](http://github.com/rlaope/estudy/blob/master/brains/Back-End/spring/dispatcher_servlet.md)
- [Servlet Filter, Spring Intercepter 특징과 차이 이해하기](http://github.com/rlaope/estudy/blob/master/brains/Back-End/spring/filter_interceptor.md)
- [[Kotlin, Spring boot] copy() 깊은복사, 얕은복사 성능상의 이점](http://github.com/rlaope/estudy/blob/master/brains/Back-End/spring/copy.md)
- [[Kotlin, Spring boot] 검색 api에서 find Query vs Internal Function 데이터 처리 효율](http://github.com/rlaope/estudy/blob/master/brains/Back-End/spring/find_query.md)
- [Spring boot Actuator 스프링 부트 액추에이터 API + Spring Cloud를 사용한 예제](http://github.com/rlaope/estudy/blob/master/brains/Back-End/spring/actuator.md)
- [Spring WebFlux, Reactive Stream, R2DBC, Mono, Flux 정복하기](http://github.com/rlaope/estudy/blob/master/brains/Back-End/spring/webflux_reactive.md)
- [Springboot에서 데이터베이스 인덱싱 하는 방법](http://github.com/rlaope/estudy/blob/master/brains/Back-End/spring/indexing.md)
- [Spring Test시에 Spring Security인증을 할 수 있는 어노테이션](http://github.com/rlaope/estudy/blob/master/brains/Back-End/spring/testsecurity.md)
- [Spring 에서의 Connection Pool, HikariCP](http://github.com/rlaope/estudy/blob/master/brains/Back-End/spring/springcp.md)
- [스프링 부트 배치 Spring boot Batch](http://github.com/rlaope/estudy/blob/master/brains/Back-End/spring/batch.md)
- [ControllerAdvice는 AOP로 구현되어 있을까? 동작 과정 살펴보기](http://github.com/rlaope/estudy/blob/master/brains/Back-End/spring/controlleradvice.md)
- [ObjectMapper의 동작 방식과 Spring boot가 제공하는 추가 기능들](http://github.com/rlaope/estudy/blob/master/brains/Back-End/spring/objmapper.md)
- [코틀린 테스트 프레임워크 mockk 사용법](http://github.com/rlaope/estudy/blob/master/brains/Back-End/spring/mockk.md)
- [Spring Data Binding, Converter, Formatter](http://github.com/rlaope/estudy/blob/master/brains/Back-End/spring/data_binding.md)
- [Spring Resource Interface, Resource 추상화와 구현체](http://github.com/rlaope/estudy/blob/master/brains/Back-End/spring/resource.md)
- [ResourceLoader, ResourcePatternResolver, ApplicationContext and Resources Paths](http://github.com/rlaope/estudy/blob/master/brains/Back-End/spring/resource2.md)
- [SecurityContextHolderStrategy (ThreadLocal, InheritableThreadLocal, Global)](http://github.com/rlaope/estudy/blob/master/brains/Back-End/spring/security_strategy.md)
- [Spring Security의 여러가지 Filter](http://github.com/rlaope/estudy/blob/master/brains/Back-End/spring/security_filter.md)
- [Mock 테스트와 Stub 테스트의 차이](http://github.com/rlaope/estudy/blob/master/brains/Back-End/spring/mock_stub.md)
- [Koltin에서 Spring을 실행하기 위한 plugin, dependencies](http://github.com/rlaope/estudy/blob/master/brains/Back-End/spring/plugko.md)
- [Spring boot 내장 웹 서버 톰캣 설정, 다른 내장 웹 서버 설정하는 방법](http://github.com/rlaope/estudy/blob/master/brains/Back-End/spring/tomcat.md)
- [Spring ArgumentResolver를 이용한 유연성 있는 파라미터 처리](http://github.com/rlaope/estudy/blob/master/brains/Back-End/spring/args_resolver.md)
- [Spring Scheduler를 사용해 일정 주기로 동작 수행](http://github.com/rlaope/estudy/blob/master/brains/Back-End/spring/scheduler.md)
- [Spring boot 프로젝트 profile 설정하기](http://github.com/rlaope/estudy/blob/master/brains/Back-End/spring/profile.md)
- [Bean Scope, DL(Dependency Lookup), Provider](http://github.com/rlaope/estudy/blob/master/brains/Back-End/spring/beanscope.md)
- [JDBC, DriverManager](https://velog.io/@hope0206/Spring-%EA%B0%9C%EB%B0%9C%EC%9E%90%EB%9D%BC%EB%A9%B4-%EC%9D%B4%EA%B1%B4-%EA%BC%AD-%EC%95%8C%EC%95%84%EC%95%BC%ED%95%A9%EB%8B%88%EB%8B%A4-1-JDBC-DriverManager)
- [Spring AOP와 다이나믹 프록시를 사용해 트랜잭션 분리하기](http://github.com/rlaope/estudy/blob/master/brains/Back-End/spring/aop_transaction.md)
- [애플리케이션 로직, 인프라 빈, 컨테이너 인프라 빈](http://github.com/rlaope/estudy/blob/master/brains/Back-End/spring/beans.md)
- [빈 스코프와 발생할 수 있는 여러 문제들과 해결 방법](http://github.com/rlaope/estudy/blob/master/brains/Back-End/spring/bean_scope.md)
- [Spring WebFlux vs MVC, 내부 작동 방식](http://github.com/rlaope/estudy/blob/master/brains/Back-End/spring/webflux/webflux.md)
- [Spring Batch 기술적 트레이드 오프](http://github.com/rlaope/estudy/blob/master/brains/Back-End/spring/batch_tradeoff.md)
- [Spring Batch 데이터 일관성 관리](http://github.com/rlaope/estudy/blob/master/brains/Back-End/spring/batch_concurrency.md)
- [Spring Data JPA와 @Transactional](http://github.com/rlaope/estudy/blob/master/brains/Back-End/spring/transactionaljpa.md)
- [Spring Data JPA 동작 원리](http://github.com/rlaope/estudy/blob/master/brains/Back-End/spring/datajpa.md)
- [Spring AOP Advice 순서 제어 방법](http://github.com/rlaope/estudy/blob/master/brains/Back-End/spring/advice_control.md)
- [Spring Data JPA @Modifiying](http://github.com/rlaope/estudy/blob/master/brains/Back-End/spring/modifying.md)
- [High Performance Hibernate, @NaturalId](http://github.com/rlaope/estudy/blob/master/brains/Back-End/spring/naturalid.md)
- [JPA Entity equals(), hashcode() overriding](http://github.com/rlaope/estudy/blob/master/brains/Back-End/jpa/equals.md)
- [영속성 컨텍스트](http://github.com/rlaope/estudy/blob/master/brains/Back-End/jpa/persistence/persistcontext.md)
- [플러시 (flush)](http://github.com/rlaope/estudy/blob/master/brains/Back-End/jpa/persistence/flush.md)
- [객체와 테이블 매핑](http://github.com/rlaope/estudy/blob/master/brains/Back-End/jpa/table/entity.md)
- [데이터베이스 스키마 자동 생성](http://github.com/rlaope/estudy/blob/master/brains/Back-End/jpa/table/util.md)
- [Hibernate 하이버 네이트, Spring Data JPA](http://github.com/rlaope/estudy/blob/master/brains/Back-End/jpa/hibernate.md)
- [임베디드 타입, @Embedded, @Embeddable, @AttributeOverride](http://github.com/rlaope/estudy/blob/master/brains/Back-End/jpa/embedded.md)
- [@Query 어노테이션에서 FK로 객체를 찾는 방법](http://github.com/rlaope/estudy/blob/master/brains/Back-End/jpa/queryfk.md)
- [JPA N + 1 문제 해결 방법 및 실무 적용](http://github.com/rlaope/estudy/blob/master/brains/Back-End/jpa/n+1.md)
- [일반 조인(Join)과 패치 조인(Fetch Join)의 차이](http://github.com/rlaope/estudy/blob/master/brains/Back-End/jpa/fetchjoin.md)
- [일반 조인 Join은 언제 사용될까?](http://github.com/rlaope/estudy/blob/master/brains/Back-End/jpa/일반Join은언제.md)
- [JPA Propagation 트랜잭션 전파 단계](http://github.com/rlaope/estudy/blob/master/brains/Back-End/jpa/propagration.md)
- [프록시(Proxy)와 지연 로딩](http://github.com/rlaope/estudy/blob/master/brains/Back-End/jpa/proxy.md)
- [OSIV(Open Session In View)](http://github.com/rlaope/estudy/blob/master/brains/Back-End/jpa/osiv.md)
- [벌크 수정, 삭제 연산과 영속성 컨텍스트](http://github.com/rlaope/estudy/blob/master/brains/Back-End/jpa/bulk.md)
- [Spring @Transactional 트랜잭션 바인딩과 Auto-Commit](http://github.com/rlaope/estudy/blob/master/brains/Back-End/spring/trx_autocommit.md)

---

#### Domain Driven Design

- [DDD(Domain Driven Design) 도메인 주도 설계 알아보기](http://github.com/rlaope/estudy/blob/master/brains/Back-End/ddd/ddd.md)
- [[Domain-Driven-Design] 바운디드 컨텍스트 (Bounded-Context)](http://github.com/rlaope/estudy/blob/master/brains/Back-End/ddd/bounded_context.md)
- [도메인 주도 설계 애그리거트(Aggregate) 알아보기](http://github.com/rlaope/estudy/blob/master/brains/Back-End/ddd/aggregate.md)
- [응용 서비스와 표현 영역 (presentation, application)](http://github.com/rlaope/estudy/blob/master/brains/Back-End/ddd/presentation.md)
- [여러 애그리거트가 필요한 기능과 도메인 서비스(응용 서비스와의 차이)](http://github.com/rlaope/estudy/blob/master/brains/Back-End/ddd/domainservice.md)
- [애그리거트 트랜잭션 관리 (선점,비선점,오프라인 잠금)](http://github.com/rlaope/estudy/blob/master/brains/Back-End/ddd/transaction.md)
- [도메인 모델과 바운디드 컨텍스트](http://github.com/rlaope/estudy/blob/master/brains/Back-End/ddd/boundcontext.md)
- [시스템 간 강결합(high coupling) 문제](http://github.com/rlaope/estudy/blob/master/brains/Back-End/ddd/event.md)
- [이벤트 (Event), 핸들러 (Handler), 디스패처 (Dispatcher)](http://github.com/rlaope/estudy/blob/master/brains/Back-End/ddd/event2.md)
- [동기 이벤트 처리 문제, 비동기 이벤트 처리](http://github.com/rlaope/estudy/blob/master/brains/Back-End/ddd/event3.md)
- [CQRS (Command Query Responsibility Segregation)](http://github.com/rlaope/estudy/blob/master/brains/Back-End/ddd/cqrs.md)

---

#### DataBase

- [데이터베이스](http://github.com/esperer/estudy/blob/master/정보처리/응용SW2.md)
- [What is DataBase?](http://github.com/rlaope/estudy/blob/master/brains/정보처리/database.md)
- [DataBase Mangement System](http://github.com/rlaope/estudy/blob/master/brains/정보처리/database2.md)
- [MySQL Query문 정리](http://github.com/rlaope/estudy/blob/master/brains/정보처리/sql.md)
- [DDL(데이터 정의어)](http://github.com/rlaope/estudy/blob/master/brains/정보처리/ddl.md)
- [키(Key)의 개념 및 종류](http://github.com/rlaope/estudy/blob/master/brains/DataBase/key.md)
- [ORM의 개념과 종류, 활용 방안](http://github.com/rlaope/estudy/blob/master/brains/DataBase/ORMs.md)
- [트랜잭션과 ACID](http://github.com/rlaope/estudy/blob/master/brains/DataBase/ACID.md)
- [데이터베이스 정규화(Normalization)](http://github.com/rlaope/estudy/blob/master/brains/DataBase/normal.md)
- [데이터베이스 성능을 위한 Index와 동작원리](http://github.com/rlaope/estudy/blob/master/brains/DataBase/index.md)
- [리플리케이션(Replication) vs 클러스터링(Clustering)](http://github.com/rlaope/estudy/blob/master/brains/DataBase/rep_clu.md)
- [DataBase Sharding (분산처리)](http://github.com/rlaope/estudy/blob/master/brains/DataBase/sharding.md)
- [데이터베이스 CAP 이론](http://github.com/rlaope/estudy/blob/master/brains/DataBase/cap.md)
- [데이터 모델링과 데이터 성질에 따른 DB 종류](http://github.com/rlaope/estudy/blob/master/brains/DataBase/modeling.md)
- [데이터베이스의 커넥션 풀 (Connection Pool CP)](http://github.com/rlaope/estudy/blob/master/brains/DataBase/connectionp.md)
- [데이터베이스 옵티마이저 Optimizer](http://github.com/rlaope/estudy/blob/master/brains/DataBase/optimizer.md)
- [옵티마이저의 최적화와 목표 그리고 한계](http://github.com/rlaope/estudy/blob/master/brains/DataBase/optimizer2.md)
- [데이터베이스에서의 클러스터 (Cluster)](http://github.com/rlaope/estudy/blob/master/brains/DataBase/cluster.md)
- [Clustering (Active Clustering, Standby Clustering)](http://github.com/rlaope/estudy/blob/master/brains/DataBase/clustering.md)
- SQLD
  - [엔터티(Entity), 속성(Attribute), 관계(Relation)](http://github.com/rlaope/estudy/blob/master/brains/DataBase/ear.md)
- [식별자 Identifier 종류와 분류체계](http://github.com/rlaope/estudy/blob/master/brains/DataBase/pk.md)
- [데이터베이스 정규화 Normalization](http://github.com/rlaope/estudy/blob/master/brains/DataBase/정규화.md)
- [데이터베이스 반정규화 Denormalization](http://github.com/rlaope/estudy/blob/master/brains/DataBase/반정규화.md)
- [DDL(CREATE, ALTER, DROP, TRUNCATE)](http://github.com/rlaope/estudy/blob/master/brains/DataBase/sql/ddl.md)
- [DML(INSERT, UPDATE, DELETE, SELECT), TCL(COMMIT, ROLLBACK)](http://github.com/rlaope/estudy/blob/master/brains/DataBase/sql/dml.md)
- [DCL(GRANT, REVOKE) 실습, 사용자 생성](http://github.com/rlaope/estudy/blob/master/brains/DataBase/sql/dcl.md)
- [WHERE 조건절 지정 실습](http://github.com/rlaope/estudy/blob/master/brains/DataBase/sql/where.md)
- [ORDER BY로 데이터 정렬하기 실습](http://github.com/rlaope/estudy/blob/master/brains/DataBase/sql/orderby.md)
- [GROUP BY, 집계함수로 데이터 그룹별 집계](http://github.com/rlaope/estudy/blob/master/brains/DataBase/sql/groupby.md)
- [Join 연산 (INNER JOIN, OUTER JOIN)](http://github.com/rlaope/estudy/blob/master/brains/DataBase/join.md)
- [INNER JOIN & OUTER JOIN SQL](http://github.com/rlaope/estudy/blob/master/brains/DataBase/sql/innerjoin.md)
- [날짜(DATE) 함수를 사용한 실습 + DUAL 테이블](http://github.com/rlaope/estudy/blob/master/brains/DataBase/sql/date.md)
- [REPLACE() 함수로 데이터 수정하기 실습](http://github.com/rlaope/estudy/blob/master/brains/DataBase/sql/replace.md)
- [SUBSTR() 함수를 사용한 문자 데이터 자르기](http://github.com/rlaope/estudy/blob/master/brains/DataBase/sql/substr.md)
- [UPPER(), LOWER() 함수를 사용한 대소문자 구분](http://github.com/rlaope/estudy/blob/master/brains/DataBase/sql/upperlower.md)
- [숫자함수 ROUND(), TRUNC(), CEIL()](http://github.com/rlaope/estudy/blob/master/brains/DataBase/sql/numberfun.md)
- [SQL 윈도우 함수 (WINDOW FUNCTION)](http://github.com/rlaope/estudy/blob/master/brains/DataBase/sql/windowfun.md)
- [계층형 쿼리(START WITH, CONNECT BY PRIOR, SIBLINGS BY)](http://github.com/rlaope/estudy/blob/master/brains/DataBase/sql/level.md)
- [SQL NULL 관련 함수 - NVL, NVL2, NULLIF, COALESCE](http://github.com/rlaope/estudy/blob/master/brains/DataBase/sql/null.md)
- [프로시저와 트리거의 차이점](http://github.com/rlaope/estudy/blob/master/brains/DataBase/sql/프로시저_트리거.md)
- [NoSQL vs SQL](http://github.com/rlaope/estudy/blob/master/brains/DataBase/nosql/sql_nosql.md)
- [MongoDB](http://github.com/rlaope/estudy/blob/master/brains/DataBase/nosql/mongodb/mongodb.md)
  - [Document Database](http://github.com/rlaope/estudy/blob/master/brains/DataBase/nosql/mongodb/document.md)
- [MongoDB 트레이드 오프 (vs RDB)](http://github.com/rlaope/estudy/blob/master/brains/DataBase/nosql/mongodb/tradeoff1.md)
- [MongoDB - CRUD](http://github.com/rlaope/estudy/blob/master/brains/DataBase/nosql/mongodb/crud.md)
- [MongoDB 샤딩](http://github.com/rlaope/estudy/blob/master/brains/DataBase/nosql/mongodb/shard.md)
- [MongoDB 데이터 복구(UNDO, REDO)](http://github.com/rlaope/estudy/blob/master/brains/DataBase/nosql/mongodb/undo_redo.md)
- [Redis](http://github.com/rlaope/estudy/blob/master/brains/DataBase/nosql/redis/redis.md)
  - [Redis 효율적인 서버 구성](http://github.com/rlaope/estudy/blob/master/brains/DataBase/nosql/redis/config.md)
- [Redis 메모리 관리, 최적화 방안](http://github.com/rlaope/estudy/blob/master/brains/DataBase/nosql/redis/memory.md)
- [Redis Fragmentation Ratio](http://github.com/rlaope/estudy/blob/master/brains/DataBase/nosql/redis/fragment.md)
- [Redis Distributed Lock, RedLock](http://github.com/rlaope/estudy/blob/master/brains/DataBase/nosql/redis/distributed.md)
- [Redis Cluster](http://github.com/rlaope/estudy/blob/master/brains/DataBase/nosql/redis/cluster.md)
- [Redis Distributed Lock, Spring Boot Example](http://github.com/rlaope/estudy/blob/master/brains/DataBase/nosql/redis/distributed2.md)
- [Redis 다중 명령에 대한 원자성 보장 방법](http://github.com/rlaope/estudy/blob/master/brains/DataBase/nosql/redis/atomic.md)
- [Redis Architecture](http://github.com/rlaope/estudy/blob/master/brains/DataBase/nosql/redis/architecture.md)
- [Redis Replication](http://github.com/rlaope/estudy/blob/master/brains/DataBase/nosql/redis/replication.md)
- [Redis Failover시 데이터 손실 방지 방법](http://github.com/rlaope/estudy/blob/master/brains/DataBase/nosql/redis/locksync.md)
- [Redis important fact about replication](http://github.com/rlaope/estudy/blob/master/brains/DataBase/nosql/redis/replica.md)
- [Redis INCR](http://github.com/rlaope/estudy/blob/master/brains/DataBase/nosql/redis/incr.md)
- [Redis Serialization Sync](http://github.com/rlaope/estudy/blob/master/brains/DataBase/nosql/redis/serial.md)
- [데이터베이스 부하분산(파티셔닝, 샤딩, 레플리케이션) 개념](http://github.com/rlaope/estudy/blob/master/brains/DataBase/dbload.md)
- [데이터베이스 파티셔닝](http://github.com/rlaope/estudy/blob/master/brains/DataBase/load/partitioning.md)
- [파티셔닝 종류와 분할 기준](http://github.com/rlaope/estudy/blob/master/brains/DataBase/load/partitioning2.md)
- [VARCHAR vs TEXT](http://github.com/rlaope/estudy/blob/master/brains/DataBase/varchar_text.md)
- [Transaction Serializability](http://github.com/rlaope/estudy/blob/master/brains/DataBase/serializability.md)
- [Transaction Recoverability](http://github.com/rlaope/estudy/blob/master/brains/DataBase/recoverability.md)
- [전문 검색 인덱스](http://github.com/rlaope/estudy/blob/master/brains/DataBase/전문검색인덱스.md)
- [커버링 인덱스](http://github.com/rlaope/estudy/blob/master/brains/DataBase/coverindex.md)
- [MMR, BKA](http://github.com/rlaope/estudy/blob/master/brains/DataBase/mmr.md)
- [MySQL 8.0 InnoDB Locking](http://github.com/rlaope/estudy/blob/master/brains/DataBase/mysql_lock.md)
- [Pessmistic Lock, Optimistic Lock](http://github.com/rlaope/estudy/blob/master/brains/DataBase/lock.md)
- [LSM Tree](http://github.com/rlaope/estudy/blob/master/brains/DataBase/lsmtree.md)
- [B+Tree](http://github.com/rlaope/estudy/blob/master/brains/DataBase/b+tree.md)
- [LIKE 쿼리 검색 성능 개선, Full-Text Search](http://github.com/rlaope/estudy/blob/master/brains/DataBase/sql/full_text.md)
- [분석 함수를 활용해 쿼리 성능 높히기](http://github.com/rlaope/estudy/blob/master/brains/DataBase/analytic_function.md)
- [Deadlock](http://github.com/rlaope/estudy/blob/master/brains/DataBase/dlock.md)
- [MySQL, MyISAM, InnoDB Storage Engine](http://github.com/rlaope/estudy/blob/master/brains/DataBase/se.md)
- [MySQL WAL](http://github.com/rlaope/estudy/blob/master/brains/DataBase/wal.md)
- [InfluxDB](http://github.com/rlaope/estudy/blob/master/brains/DataBase/influx.md)

---

#### Design Pattern

- [디자인 패턴](http://github.com/rlaope/estudy/blob/master/brains/Design-Pattern/designp.md)
  - 생성 패턴
    - [싱글톤 패턴](http://github.com/rlaope/estudy/blob/master/brains/Design-Pattern/생성/singleton.md)
- [팩토리 메서드 패턴](http://github.com/rlaope/estudy/blob/master/brains/Design-Pattern/생성/factory_method.md)
- [추상 팩토리 패턴](http://github.com/rlaope/estudy/blob/master/brains/Design-Pattern/생성/abstract_factory.md)
- [빌더 패턴](http://github.com/rlaope/estudy/blob/master/brains/Design-Pattern/생성/builder.md)
- [프로토타입 패턴](http://github.com/rlaope/estudy/blob/master/brains/Design-Pattern/생성/prototype.md)
  - 행동 패턴
- [템플릿 메서드 패턴](http://github.com/rlaope/estudy/blob/master/brains/Design-Pattern/행동/template.md)
- [옵저버 패턴](http://github.com/rlaope/estudy/blob/master/brains/Design-Pattern/행동/observer.md)
- [전략 패턴](http://github.com/rlaope/estudy/blob/master/brains/Design-Pattern/행동/strategy.md)
- [싱글톤 패턴](http://github.com/rlaope/estudy/blob/master/brains/Design-Pattern/행동/singleton.md)
- [스테이트 패턴](http://github.com/rlaope/estudy/blob/master/brains/Design-Pattern/행동/state.md)
- [책임 연쇄 패턴](http://github.com/rlaope/estudy/blob/master/brains/Design-Pattern/행동/chain_of_resp.md)
- [커맨드 패턴](http://github.com/rlaope/estudy/blob/master/brains/Design-Pattern/행동/command.md)
- [인터프리터 패턴](http://github.com/rlaope/estudy/blob/master/brains/Design-Pattern/행동/Interpreter.md)
- [이터레이터 패턴](http://github.com/rlaope/estudy/blob/master/brains/Design-Pattern/행동/iterator.md)
- [중재자 패턴](http://github.com/rlaope/estudy/blob/master/brains/Design-Pattern/행동/mediator.md)
  - 구조 패턴
- [프록시 패턴](http://github.com/rlaope/estudy/blob/master/brains/Design-Pattern/구조/proxyp.md)
- [어댑터 패턴](http://github.com/rlaope/estudy/blob/master/brains/Design-Pattern/구조/adapter.md)
- [컴포지트 패턴](http://github.com/rlaope/estudy/blob/master/brains/Design-Pattern/구조/composite.md)
- [데코레이터 패턴](http://github.com/rlaope/estudy/blob/master/brains/Design-Pattern/구조/decorator.md)
- [퍼사드 패턴](http://github.com/rlaope/estudy/blob/master/brains/Design-Pattern/구조/facade.md)
- [브리지 패턴](http://github.com/rlaope/estudy/blob/master/brains/Design-Pattern/구조/bridge.md)

---

#### Network

- 인터넷 네트워크
- [IP(인터넷 프로토콜)](http://github.com/rlaope/estudy/blob/master/brains/Back-End/http/network/ip.md)
- [TCP & UDP](http://github.com/rlaope/estudy/blob/master/brains/Back-End/http/network/tcpudp.md)
- [PORT & DNS](http://github.com/rlaope/estudy/blob/master/brains/Back-End/http/network/port.md)
- URI와 웹 브라우저 요청 흐름
- [URI](http://github.com/rlaope/estudy/blob/master/brains/Back-End/http/URI/uri.md)
- [웹 브라우저 요청 흐름](http://github.com/rlaope/estudy/blob/master/brains/Back-End/http/URI/web.md)
- HTTP 기본
- [모든것이 HTTP](http://github.com/rlaope/estudy/blob/master/brains/Back-End/http/HTTP기본/everyhttp.md) 
- [클라이언트 서버 구조](http://github.com/rlaope/estudy/blob/master/brains/Back-End/http/HTTP기본/structclient.md) 
- [Stateful, Stateless](http://github.com/rlaope/estudy/blob/master/brains/Back-End/http/HTTP기본/state.md) 
- [HTTP 메시지](http://github.com/rlaope/estudy/blob/master/brains/Back-End/http/HTTP기본/message.md) 
- HTTP 메서드, 활용
- [비 연결성 (connectionless)](http://github.com/rlaope/estudy/blob/master/brains/Back-End/http/HTTP%EA%B8%B0%EB%B3%B8/connectionless.md)
- [HTTP API를 만들어보자](http://github.com/rlaope/estudy/blob/master/brains/Back-End/http/HTTP메서드/httpapi.md)
- [HTTP 메서드 - GET, POST](http://github.com/rlaope/estudy/blob/master/brains/Back-End/http/HTTP메서드/getpost.md)
- [HTTP 메서드 - PUT, PATCH, DELETE](http://github.com/rlaope/estudy/blob/master/brains/Back-End/http/HTTP메서드/putpadel.md) 
- [HTTP 메서드의 속성](http://github.com/rlaope/estudy/blob/master/brains/Back-End/http/HTTP메서드/attrib.md) 
- [클라이언트에서 서버로 데이터 전송](http://github.com/rlaope/estudy/blob/master/brains/Back-End/http/HTTP메서드/submit.md)
- [HTTP API 설계 예시](http://github.com/rlaope/estudy/blob/master/brains/Back-End/http/HTTP메서드/exam.md)
- HTTP 상태코드
- [HTTP 상태코드 소개](http://github.com/rlaope/estudy/blob/master/brains/Back-End/http/HTTP상태코드/status.md)
- [2xx - 성공](http://github.com/rlaope/estudy/blob/master/brains/Back-End/http/HTTP상태코드/2xx.md)
- [3xx - 리다이렉션](http://github.com/rlaope/estudy/blob/master/brains/Back-End/http/HTTP상태코드/3xx.md)
- [4xx - 클라이언트 오류, 5xx - 서버 오류](http://github.com/rlaope/estudy/blob/master/brains/Back-End/http/HTTP상태코드/4xx5xx.md)
- HTTP 헤더 - 일반 헤더
- [HTTP 헤더 개요, 표현](http://github.com/rlaope/estudy/blob/master/brains/Back-End/http/HTTP헤더/summary.md)
- [협상, 전송 방식](http://github.com/rlaope/estudy/blob/master/brains/Back-End/http/HTTP헤더/nego.md)
- [일반 정보, 특별한 정보](http://github.com/rlaope/estudy/blob/master/brains/Back-End/http/HTTP헤더/info.md)
- [인증, 쿠키](http://github.com/rlaope/estudy/blob/master/brains/Back-End/http/HTTP헤더/cookie.md)
- HTTP 헤더 - 캐시와 조건부 요청
- [캐시 기본 동작](http://github.com/rlaope/estudy/blob/master/brains/Back-End/http/HTTP헤더2/cache.md)
- [검증 헤더와 조건부 요청](http://github.com/rlaope/estudy/blob/master/brains/Back-End/http/HTTP헤더2/verify.md)
- [캐시와 조건부 요청 헤더](http://github.com/rlaope/estudy/blob/master/brains/Back-End/http/HTTP헤더2/cachehead.md)
- [프록시 캐시, 캐시 무효화](http://github.com/rlaope/estudy/blob/master/brains/Back-End/http/HTTP헤더2/proxy.md)
- [네트워크의 기초 알아보기](http://github.com/rlaope/estudy/blob/master/brains/정보처리/network.md)
- [네트워크 프로토콜 정리](http://github.com/rlaope/estudy/blob/master/brains/정보처리/protocall.md)
- [인터넷 작동 원리](http://github.com/rlaope/estudy/blob/master/brains/Back-End/Internet/internet.md)
- [HTTP에 대해 알아보기](http://github.com/rlaope/estudy/blob/master/brains/Back-End/Internet/http.md)
- [DNS와 작동 원리](http://github.com/rlaope/estudy/blob/master/brains/Back-End/Internet/dns.md) 
- [도메인 네임이란?](http://github.com/rlaope/estudy/blob/master/brains/Back-End/Internet/domain.md)
- [브라우저 동작 원리](http://github.com/rlaope/estudy/blob/master/brains/Back-End/Internet/webactive.md)
- [호스팅이란 무엇일까?](http://github.com/rlaope/estudy/blob/master/brains/Back-End/Internet/host.md)
- [HTTP 메서드 알아보기](http://github.com/rlaope/estudy/blob/master/brains/정보처리/동기화.md)
- [RESTful API 의미와 설계규칙](http://github.com/rlaope/estudy/blob/master/brains/정보처리/rest.md)
- [네트워크 계층별 프로토콜](http://github.com/rlaope/estudy/blob/master/brains/정보처리/osiproto.md)
- [아파치 톰캣 (Apache Tomcat)](http://github.com/rlaope/estudy/blob/master/brains/Back-End/Internet/tomcat.md)
- [네트워크 웹 통신의 흐름](http://github.com/rlaope/estudy/blob/master/brains/Back-End/Internet/webflow.md)
- [웹 캐시(프록시 서버)](http://github.com/rlaope/estudy/blob/master/brains/Back-End/Internet/webcache.md)
- [CDN (Content Delivery Networks)](http://github.com/rlaope/estudy/blob/master/brains/Back-End/Internet/cdn.md)
- [P2P(peer-to-peer network)](http://github.com/rlaope/estudy/blob/master/brains/Back-End/Internet/p2p.md)
- [스위치와 라우터, 스위칭과 라우팅](http://github.com/rlaope/estudy/blob/master/brains/Back-End/Internet/router_switch.md)
- [인바운드(Inbound)와 아웃바운드(Outbound)](http://github.com/rlaope/estudy/blob/master/brains/Back-End/Internet/inoutbound.md)
- [회선교환 방식과 패킷교환 방식](http://github.com/rlaope/estudy/blob/master/brains/Back-End/Internet/trace.md)
- [IP/IP Packet, 패킷 전달, 한계](http://github.com/rlaope/estudy/blob/master/brains/Back-End/Internet/ip.md)
- [OSI 7계층과 TCP/IP 4계층](http://github.com/rlaope/estudy/blob/master/brains/Back-End/Internet/ositcp.md)
- [TCP/IP Packet, TCP vs UDP](http://github.com/rlaope/estudy/blob/master/brains/Back-End/Internet/tcppacket.md)
- [웹 캐시 Web Cache](http://github.com/rlaope/estudy/blob/master/brains/Back-End/Internet/cache.md)
- [캐시 검증 헤더(ETag, If-None-Match)](http://github.com/rlaope/estudy/blob/master/brains/Back-End/Internet/etag.md)
- [L2, L3, L4 & L7 스위치](http://github.com/rlaope/estudy/blob/master/brains/Back-End/Internet/ln.md)
- [웹소켓(WebSocket), HTTP와의 차이](http://github.com/rlaope/estudy/blob/master/brains/Back-End/Internet/websocket.md)
- [SSL(Security Socket Layer), TLS(Transfer Layer Security)](http://github.com/rlaope/estudy/blob/master/brains/Back-End/Internet/ssl_tls.md)
- [메시지 큐(Message Queue, MQ) 개념](http://github.com/rlaope/estudy/blob/master/brains/Back-End/Internet/mq.md)
- [서브넷팅 & 슈퍼넷팅 개념 및 쉬운 계산 방법](http://github.com/rlaope/estudy/blob/master/brains/Back-End/Internet/subnetsupernet.md)
- [3-way / 4-way Handshake](http://github.com/rlaope/estudy/blob/master/brains/Back-End/Internet/3handshake.md)
- [VLAN, Trunk/AccessPort](http://github.com/rlaope/estudy/blob/master/brains/Network/VLAN.md)
- [캐시 검증 헤더, Last-Modified, If-Modified-Since](http://github.com/rlaope/estudy/blob/master/brains/Back-End/Internet/cache_header.md)
- [VLAN(.v2)](http://github.com/rlaope/estudy/blob/master/brains/Network/vlan2.md)
- [SSL Handshake](http://github.com/rlaope/estudy/blob/master/brains/Network/ssl_handshake.md)
- [라우터 Router](http://github.com/rlaope/estudy/blob/master/brains/Network/router.md)
- [DHCP(Dynamic Host Configuration Protocol)](http://github.com/rlaope/estudy/blob/master/brains/Network/dhcp.md)
- [TCP Header](http://github.com/rlaope/estudy/blob/master/brains/Network/tcp_header.md)
- [TCP 세션 유지 Keepalive](http://github.com/rlaope/estudy/blob/master/brains/Network/tcp_keepalive.md)
- [TCP Flag, ECN](http://github.com/rlaope/estudy/blob/master/brains/Network/tcp_flag.md)
- [QoS 3가지 수행 모델 (Best Effort, IntServ, DiffServ)](http://github.com/rlaope/estudy/blob/master/brains/Network/qos.md)
- [Token Ring, Ethernet](http://github.com/rlaope/estudy/blob/master/brains/Network/et.md)
- [Network 회선, VPN, DWDM](http://github.com/rlaope/estudy/blob/master/brains/Network/conn.md)
- [Network Components](http://github.com/rlaope/estudy/blob/master/brains/Network/component.md)
- [MAC, IP Address, Subnetting](http://github.com/rlaope/estudy/blob/master/brains/Network/addr.md)
- [Gateway, Subnet](http://github.com/rlaope/estudy/blob/master/brains/Network/subn.md)
- [Switch In Action](http://github.com/rlaope/estudy/blob/master/brains/Network/switch_act.md)
- [TCP State Machine, Concept](http://github.com/rlaope/estudy/blob/master/brains/Network/tcp.md)
- [HTTP TCP Keep-Alive](http://github.com/rlaope/estudy/blob/master/brains/Network/keepalive.md)
- [HTTP Keep-Alive Concept](http://github.com/rlaope/estudy/blob/master/brains/Network/httpka.md)
- [File Descriptor in Network(cc. KeepAlive)](http://github.com/rlaope/estudy/blob/master/brains/Network/fd.md)
- [BGP(Border Gateway Protocol) Peering](http://github.com/rlaope/estudy/blob/master/brains/Network/bgp.md)
- [IPSec](http://github.com/rlaope/estudy/blob/master/brains/Network/ipsec.md)
- [TCP SYN Cookie](http://github.com/rlaope/estudy/blob/master/brains/Network/syncookie.md)
- [TCP Window Size, MSS, SACK Permmited](http://github.com/rlaope/estudy/blob/master/brains/Network/tcpwin.md)
- [TCP Congestion Control](http://github.com/rlaope/estudy/blob/master/brains/Network/tcp_control.md)
- [Loss-based 알고리즘 Reno & CUBIC](http://github.com/rlaope/estudy/blob/master/brains/Network/lossbased.md)
- [현대적 네트워크, 차세대 혼잡제어 BBR & QUIC](http://github.com/rlaope/estudy/blob/master/brains/Network/bbrquic.md)

---

#### Operating System

- [꼭 알아야 할 기본 CS 지식](http://github.com/rlaope/estudy/blob/master/brains/정보처리/응용SW.md)
- [멀티 스레드와 멀티 프로세스](http://github.com/rlaope/estudy/blob/master/brains/정보처리/processthread.md)
- [CPU 스케줄링이란](http://github.com/rlaope/estudy/blob/master/brains/정보처리/cpus.md)
- [런타임과 컴파일타임](http://github.com/rlaope/estudy/blob/master/brains/정보처리/comrun.md)
- [OS의 스와핑 Swapping](http://github.com/rlaope/estudy/blob/master/brains/Operating-System/swapping.md)
- [HTTP 메서드](http://github.com/rlaope/estudy/blob/master/brains/%EC%A0%95%EB%B3%B4%EC%B2%98%EB%A6%AC/httpmethod.md)
- [가상 메모리 Virtual Memory System](http://github.com/rlaope/estudy/blob/master/brains/Operating-System/vm.md)
- [[OS] 운영체제 구조와 원리](http://github.com/rlaope/estudy/blob/master/brains/%EC%A0%95%EB%B3%B4%EC%B2%98%EB%A6%AC/os.md)
- [뮤텍스(Mutex)와 세마포어(Semaphore)](http://github.com/rlaope/estudy/blob/master/brains/Operating-System/mutex_semaphore.md)
- [스레드와 동시성](http://github.com/rlaope/estudy/blob/master/brains/%EC%A0%95%EB%B3%B4%EC%B2%98%EB%A6%AC/%EC%8A%A4%EB%A0%88%EB%93%9C.md)
- [데몬(daemon) 프로세스의 정의](http://github.com/rlaope/estudy/blob/master/brains/DevOps/데몬프로세스.md)
- [응용SW_2( 컴퓨터 시스템 일반 학습지 )](http://github.com/rlaope/estudy/blob/master/brains/%EC%A0%95%EB%B3%B4%EC%B2%98%EB%A6%AC/%EC%9D%91%EC%9A%A9SW2.md)
- [컴퓨팅 시스템 Computing System](http://github.com/rlaope/estudy/blob/master/brains/Operating-System/computingsystem.md)
- [페이지 교체 알고리즘 FIFO, LRU, LFU, MFU, NUR](http://github.com/rlaope/estudy/blob/master/brains/Operating-System/page.md)
- [메모리 단편화 Fragmentation](http://github.com/rlaope/estudy/blob/master/brains/Operating-System/fragmentation.md)
- [하이퍼바이저 Hypervisor](http://github.com/rlaope/estudy/blob/master/brains/Operating-System/hypervisor.md)
- [스핀락, 뮤텍스, 세마포어 + 뮤텍스 vs 이진 세마포어](http://github.com/rlaope/estudy/blob/master/brains/Operating-System/mutual_exclusion.md)
- [컴파일러 최적화](http://github.com/rlaope/estudy/blob/master/brains/Operating-System/compiler_optimize.md)
- [IPC(Inter Process Comunication)](http://github.com/rlaope/estudy/blob/master/brains/Operating-System/ipc.md)
- [Process Memory Structure](http://github.com/rlaope/estudy/blob/master/brains/Operating-System/process_memory.md)
- [캐시 메모리 구조와 작동 방식](http://github.com/rlaope/estudy/blob/master/brains/Operating-System/cache_memory.md)
- [Memory - Address, Contiguous allocation, MMU](http://github.com/rlaope/estudy/blob/master/brains/Operating-System/mmu.md)
- [Paging, Fragmentation, TLB](http://github.com/rlaope/estudy/blob/master/brains/Operating-System/tlb.md)
- [UDS, 0000.sock](http://github.com/rlaope/estudy/blob/master/brains/Operating-System/uds.md)
- [Parity bit, Pararell Paritiy, Hamming Code](http://github.com/rlaope/estudy/blob/master/brains/Operating-System/paritiy.md)
- [Process Architecture](http://github.com/rlaope/estudy/blob/master/brains/Operating-System/procarc.md)
- [MMU, TLB, Page Table](http://github.com/rlaope/estudy/blob/master/brains/Operating-System/mm.md)
- [NUMA](http://github.com/rlaope/estudy/blob/master/brains/Operating-System/numa.md)
- [NUMA (Kernel Level)](http://github.com/rlaope/estudy/blob/master/brains/Operating-System/numa2.md)
- [Page Cache, Buffer Cache](http://github.com/rlaope/estudy/blob/master/brains/Operating-System/pbcache.md)
- [inode(index node)](http://github.com/rlaope/estudy/blob/master/brains/Operating-System/inode.md)
- [CPU Out-of-Order Execution, Barrier, Happens-Before](http://github.com/rlaope/estudy/blob/master/brains/Operating-System/cpuooo.md)
- [Copy-on-Write (CoW)와 fork()의 메모리 최적화](http://github.com/rlaope/estudy/blob/master/brains/Operating-System/cow.md)
- [CAS와 ABA 문제](http://github.com/rlaope/estudy/blob/master/brains/Operating-System/casaba.md)
- [Lock-free 및 STM(Software Transactional Memory)](http://github.com/rlaope/estudy/blob/master/brains/Operating-System/lockfree.md)

---

#### Data Structure

- 선형 구조
- [선형 리스트](http://github.com/rlaope/estudy/blob/master/brains/Data-Structure/선형/linearlist/linearlist.md)
- [연결 리스트](http://github.com/rlaope/estudy/blob/master/brains/Data-Structure/선형/linkedlist/linkedlist.md)
- [스택 stack](http://github.com/rlaope/estudy/blob/master/brains/Data-Structure/선형/stack/stack.md)
- [큐 queue](http://github.com/rlaope/estudy/blob/master/brains/Data-Structure/선형/queue/queue.md)
- 비선형 구조
- [트리 Tree](http://github.com/rlaope/estudy/blob/master/brains/Data-Structure/비선형/tree/tree.md)
  - [이진 탐색 트리 Binary Search Tree](http://github.com/rlaope/estudy/blob/master/brains/Data-Structure/비선형/tree/bst.md)
- [Abstract Syntax Tree](http://github.com/rlaope/estudy/blob/master/brains/Data-Structure/ast.md)
- [Parse Tree](http://github.com/rlaope/estudy/blob/master/brains/Data-Structure/parsetree.md)
- [AVL(Adelson-Velsky and Landis) Tree](http://github.com/rlaope/estudy/blob/master/brains/Data-Structure/비선형/tree/avl.md)
- [Red-Black Tree: 레드 블랙 트리](http://github.com/rlaope/estudy/blob/master/brains/Data-Structure/비선형/tree/redblack.md)
- [B-Tree](http://github.com/rlaope/estudy/blob/master/brains/Data-Structure/비선형/tree/btree.md)
  - [B-Tree의 데이터 삭제](http://github.com/rlaope/estudy/blob/master/brains/Data-Structure/비선형/tree/btree_delete.md)
- [그래프 graph](http://github.com/rlaope/estudy/blob/master/brains/Data-Structure/비선형/graph/graph.md)
  - [깊이 우선 탐색(DFS , Depth-Fist Search)](http://github.com/rlaope/estudy/blob/master/brains/Data-Structure/비선형/graph/search/dfs.md)
- [너비 우선 탐색(BFS, Breadth-First Search)](http://github.com/rlaope/estudy/blob/master/brains/Data-Structure/비선형/graph/search/bfs.md)
- [자료구조와 알고리즘](http://github.com/rlaope/estudy/blob/master/brains/정보처리/자료구조알고리즘.md)
- [너비 우선 탐색(BFS)](http://github.com/rlaope/estudy/blob/master/brains/Algorithm/bfs.md)
- [깊이 우선 탐색(DFS)](http://github.com/rlaope/estudy/blob/master/brains/Algorithm/dfs.md)
- [그리디 알고리즘](http://github.com/rlaope/estudy/blob/master/brains/Algorithm/greedy.md)
- [프림 알고리즘](http://github.com/rlaope/estudy/blob/master/brains/Algorithm/prim.md)
- [다익스트라 알고리즘](http://github.com/rlaope/estudy/blob/master/brains/Algorithm/dijkstra.md)
- [벨만 포드 알고리즘](http://github.com/rlaope/estudy/blob/master/brains/Algorithm/bellman_ford.md)
- [플로이드 와샬 알고리즘](http://github.com/rlaope/estudy/blob/master/brains/Algorithm/floyd_warshall.md)

----

#### AI

- [One-Hot Encoding, 다중공선성](http://github.com/rlaope/estudy/blob/master/brains/AI/onehot.md)
- [과대적합, 과소적합](http://github.com/rlaope/estudy/blob/master/brains/AI/overfit.md)
- [가중치w, 편향b](http://github.com/rlaope/estudy/blob/master/brains/AI/wb.md)
- [하이퍼 파라미터](http://github.com/rlaope/estudy/blob/master/brains/AI/hparam.md)
- [회귀 모델 성능평가 지표](http://github.com/rlaope/estudy/blob/master/brains/AI/mae.md)
- [로지스틱 회귀분석 이론](http://github.com/rlaope/estudy/blob/master/brains/AI/lr.md)
- [훈련세트 데이터 스케일 문제, 전처리](http://github.com/rlaope/estudy/blob/master/brains/AI/scale.md)
- [scikit-learn](http://github.com/rlaope/estudy/blob/master/brains/AI/sklearn.md)
- [서포트 벡터 머신](http://github.com/rlaope/estudy/blob/master/brains/AI/svm.md)
- [신경망 Perception](http://github.com/rlaope/estudy/blob/master/brains/AI/perception.md)
- [Tensor 차원](http://github.com/rlaope/estudy/blob/master/brains/AI/tensor.md)
- [GPU 아키텍처](http://github.com/rlaope/estudy/blob/master/brains/AI/gpu.md)
  - [CUDA](http://github.com/rlaope/estudy/blob/master/brains/AI/cuda.md)
- [연산자 융합, 양자화](http://github.com/rlaope/estudy/blob/master/brains/AI/of.md)
- [TensorRT](http://github.com/rlaope/estudy/blob/master/brains/AI/tensorrt.md)
- [LLM Architecture](http://github.com/rlaope/estudy/blob/master/brains/AI/llm.md)
- [LLM Agent 아키텍처](http://github.com/rlaope/estudy/blob/master/brains/AI/llmagent.md)
- [검색 증강 생성(RAG) 고도화 전략](http://github.com/rlaope/estudy/blob/master/brains/AI/rag.md)
- [이미지 특징점 추출 Feature Extraction](http://github.com/rlaope/estudy/blob/master/brains/AI/feature_extraction.md)
- [ORB(Oriented FAST and Rotated BRIEF)](http://github.com/rlaope/estudy/blob/master/brains/AI/orb.md)
- [CNN(Convolution Neural Network) 기반 특징 추출](http://github.com/rlaope/estudy/blob/master/brains/AI/cnn.md)
- [LSH(Locality-Sensitive Hashing)](http://github.com/rlaope/estudy/blob/master/brains/AI/lsh.md)
- [Elasticsearch Indexing & Vector Search](http://github.com/rlaope/estudy/blob/master/brains/AI/esiv.md)
- [객체 탐지 (Object Detection)](http://github.com/rlaope/estudy/blob/master/brains/AI/object_detection.md)
- [검색 시스템 정량적 평가 지표 (IR Metrics & Evaluation)](http://github.com/rlaope/estudy/blob/master/brains/AI/irmetric.md)
- [Metric Learning & CLIP](http://github.com/rlaope/estudy/blob/master/brains/AI/clip.md)
- [근사 검색 알고리즘, HNSW (ANN & FAISS)](http://github.com/rlaope/estudy/blob/master/brains/AI/hnsw.md)
- [Elasticsearch 8.x Native Vector Search와 하이브리드 아키텍처](http://github.com/rlaope/estudy/blob/master/brains/AI/hybridsearch.md)
- [AI 모델 경량화 및 추론 가속 (ONNX & TensorRT)](http://github.com/rlaope/estudy/blob/master/brains/AI/modelx.md)
- [AI 서빙 아키텍처 (Triton Inference Server & Dynamic Batching)](http://github.com/rlaope/estudy/blob/master/brains/AI/serving.md)
- [Triton Inference Server](http://github.com/rlaope/estudy/blob/master/brains/AI/triton.md)
- [vLLM](http://github.com/rlaope/estudy/blob/master/brains/AI/vllm.md)
- [LLM/Agent 공통 플랫폼 아키텍처](http://github.com/rlaope/estudy/blob/master/brains/AI/llmagent)
  - [LLM Gateway와 다중 모델(SaaS & Self-hosted) 통합 라우팅](http://github.com/rlaope/estudy/blob/master/brains/AI/llmagent/routing.md)
- [모듈형 RAG 파이프라인 및 통합 인터페이스 설계](http://github.com/rlaope/estudy/blob/master/brains/AI/llmagent/rag_pipeline.md)
- [AI Agent 도구화(Tooling) 및 동적 프롬프트·컨텍스트 관리 플랫폼](http://github.com/rlaope/estudy/blob/master/brains/AI/llmagent/ai_tooling.md)
- [RAG 및 Agent 서빙 파이프라인](http://github.com/rlaope/estudy/blob/master/brains/AI/llmagent/agent_serving.md)
- [LLM/Agent 정량적 Evaluation 시스템](http://github.com/rlaope/estudy/blob/master/brains/AI/llmagent/evaluation.md)
- [멀티 테넌트(Multi-tenant) LLM 플랫폼 환경과 자원 격리](http://github.com/rlaope/estudy/blob/master/brains/AI/llmagent/multitenant.md)
- [AI 서빙 인프라 구현 및 최적화](http://github.com/rlaope/estudy/blob/master/brains/AI/optimize_runtime)
  - [모델 경량화 및 추론 지연 시간 최적화 파이프라인 (ONNXRuntime,  TensorRT)](http://github.com/rlaope/estudy/blob/master/brains/AI/optimize_runtime/opti1.md)
- [Triton Inference Server config.pbtxt 튜닝](http://github.com/rlaope/estudy/blob/master/brains/AI/optimize_runtime/opti2.md)
- [vLLM 엔진 PagedAttention 기반 메모리 최적화](http://github.com/rlaope/estudy/blob/master/brains/AI/optimize_runtime/opti3.md)
- [코어 추론 엔진과 통신하는 고성능 비동기 API 레이어 구현](http://github.com/rlaope/estudy/blob/master/brains/AI/optimize_runtime/opti4.md)
- [Continuous Batching 알고리즘](http://github.com/rlaope/estudy/blob/master/brains/AI/optimize_runtime/opti5.md)
- [Nesight Systems, PyTorch Profiler VRAM 메모리 병목 프로파일링](http://github.com/rlaope/estudy/blob/master/brains/AI/optimize_runtime/opti6.md)
- [LLM Gateway 및 멀티테넌트 환경 아키텍처](http://github.com/rlaope/estudy/blob/master/brains/AI/llm_gateway)
  - [LiteLLM 프록시 서버 구성](http://github.com/rlaope/estudy/blob/master/brains/AI/llm_gateway/lg1.md)
- [테넌트별 요청 분리 권한 인가 미들웨어 개발](http://github.com/rlaope/estudy/blob/master/brains/AI/llm_gateway/lg2.md)
- [Token Bucket 기반 Rate Limiting](http://github.com/rlaope/estudy/blob/master/brains/AI/llm_gateway/lg3.md)
- [Noisy Neigbor 차단 로직 구현](http://github.com/rlaope/estudy/blob/master/brains/AI/llm_gateway/lg4.md)
- [지연 없이 프롬프트 토큰 사용량을 로깅하는 관측성 파이프라인](http://github.com/rlaope/estudy/blob/master/brains/AI/llm_gateway/lg5.md)
- [LLM API 응답 가공](http://github.com/rlaope/estudy/blob/master/brains/AI/llm_gateway/lg6.md)
- [상태 머신 기반 Agent Pipeline](http://github.com/rlaope/estudy/blob/master/brains/AI/agent_state/)
  - [LangGraph 기반 Agent DAG](http://github.com/rlaope/estudy/blob/master/brains/AI/agent_state/st1.md)
- [RNN에서 Attention까지 발전 과정](http://github.com/rlaope/estudy/blob/master/brains/AI/rnn.md)
  - [Checkpointing 적용](http://github.com/rlaope/estudy/blob/master/brains/AI/agent_state/st3.md)
- [Self-Attention, Multi-Head Attention](http://github.com/rlaope/estudy/blob/master/brains/AI/attention.md)
  - [Stateless 프로토콜에서 Agent 문맥 식별 라우터](http://github.com/rlaope/estudy/blob/master/brains/AI/agent_state/st2.md)
- [Positional Encoding, Encoder-Decoder](http://github.com/rlaope/estudy/blob/master/brains/AI/ende.md)
- [BERT, GPT](http://github.com/rlaope/estudy/blob/master/brains/AI/bert.md)
- [SFT, Policy Learning](http://github.com/rlaope/estudy/blob/master/brains/AI/sft.md)
- [Off-policy Distillation과 Teacher-Student 학습](http://github.com/rlaope/estudy/blob/master/brains/AI/opd.md)
- [On-policy SFT와 Rejection Sampling Fine-Tuning](http://github.com/rlaope/estudy/blob/master/brains/AI/onsft.md)
- [Preference Optimization: DPO 계열](http://github.com/rlaope/estudy/blob/master/brains/AI/dpo.md)
- [Online RL: PPO, GRPO, RLVR](http://github.com/rlaope/estudy/blob/master/brains/AI/rl.md)
- [Self-Distillation과 Iterative Self-Improvement](http://github.com/rlaope/estudy/blob/master/brains/AI/sd.md)
- [Policy Distribution와 On-Policy / Off-Policy](http://github.com/rlaope/estudy/blob/master/brains/AI/policydis.md)
- [LLM Model Tuning](http://github.com/rlaope/estudy/blob/master/brains/AI/llmtun/README.md)
  - [Transformer와 Causal LM 구조 이해](http://github.com/rlaope/estudy/blob/master/brains/AI/llmtun/transformer.md)
- [Tokenizer와 Context Length](http://github.com/rlaope/estudy/blob/master/brains/AI/llmtun/token.md)
- [Pretraining Objective와 Loss 이해](http://github.com/rlaope/estudy/blob/master/brains/AI/llmtun/loss.md)
- [Base Model, Instruct Model, Chat Model](http://github.com/rlaope/estudy/blob/master/brains/AI/llmtun/model.md)
- [Continual Pretraining과 Fine-tuning 차이](http://github.com/rlaope/estudy/blob/master/brains/AI/llmtun/tuning.md)
- [Pretraning Data와 SFT Data 구분](http://github.com/rlaope/estudy/blob/master/brains/AI/llmtun/data.md)
- [Hermes Agent, Agent Memory Layer](http://github.com/rlaope/estudy/blob/master/brains/AI/hermes_memory.md)
- [OpenWeight Model(Kimi, GLM, Qwen, DeepSeek) 고고학](http://github.com/rlaope/estudy/blob/master/brains/AI/openweight.md)
  - [DeepSeek](http://github.com/rlaope/estudy/blob/master/brains/AI/ow/deepseek.md)
- [Qwen](http://github.com/rlaope/estudy/blob/master/brains/AI/ow/qwen.md)
- [GLM](http://github.com/rlaope/estudy/blob/master/brains/AI/ow/glm.md)
- [Kimi](http://github.com/rlaope/estudy/blob/master/brains/AI/ow/kimi.md)
- [LLM 추론 서빙 엔진 SGLang 리서치](http://github.com/rlaope/estudy/blob/master/brains/AI/llm_serving_opt.md)
- [Agent Long Term Memory System](http://github.com/rlaope/estudy/blob/master/brains/AI/longterm.md)
- [QWEN 모델 분석](http://github.com/rlaope/estudy/blob/master/brains/AI/ow/qwen_deepdive.md)
- [Kimi 모델 분석](http://github.com/rlaope/estudy/blob/master/brains/AI/ow/kimi_deepdive.md)
- [GLM-5.3 모델 분석](http://github.com/rlaope/estudy/blob/master/brains/AI/ow/glm53.md)
- [DeepSeek V4.1 Flash 분석](http://github.com/rlaope/estudy/blob/master/brains/AI/deepseek41.md)
- [SIFT, SURF](http://github.com/rlaope/estudy/blob/master/brains/AI/sift.md)
- [에이전트의 Adaptive Retrival](http://github.com/rlaope/estudy/blob/master/brains/AI/adaptive_retrival.md)

----

#### AI/MLOps

- [CPU와 GPU의 설계 철학 차이](http://github.com/rlaope/estudy/blob/master/brains/MLOps/cpu_gpu.md)
- [GPU 스레드 실행 모델](http://github.com/rlaope/estudy/blob/master/brains/MLOps/gpu_thread.md)
- [GPU 내부 메모리 계층 구조](http://github.com/rlaope/estudy/blob/master/brains/MLOps/gpu_mem.md)
- [CUDA, Tensor Core](http://github.com/rlaope/estudy/blob/master/brains/MLOps/cuda.md)
- [HBM, Roofline 모델](http://github.com/rlaope/estudy/blob/master/brains/MLOps/hbm.md)
- [PCIe 레인 구조, GPUDirect Storage, NUMA Optimization](http://github.com/rlaope/estudy/blob/master/brains/MLOps/pcle.md)
- [NVLink, NVSwitch](http://github.com/rlaope/estudy/blob/master/brains/MLOps/nv.md)
- [ZeRO Optimizer (DeepSpeed, FSDP)](http://github.com/rlaope/estudy/blob/master/brains/MLOps/zeroopt.md)
- [Transformer 추론 실행 구조 이해](http://github.com/rlaope/estudy/blob/master/brains/MLOps/llm_performance/llm_infer.md)
- [LLM Serving Benchmark와 성능 지표](http://github.com/rlaope/estudy/blob/master/brains/MLOps/llm_performance/bench.md)
- [KV Cache와 Batching 최적화](http://github.com/rlaope/estudy/blob/master/brains/MLOps/llm_performance/kvopt.md)
- [Quantization과 Multi-GPU Parallelism](http://github.com/rlaope/estudy/blob/master/brains/MLOps/llm_performance/quant.md)
- [Production Model Serving과 Capacity Planning](http://github.com/rlaope/estudy/blob/master/brains/MLOps/llm_performance/serving.md)
- [Agent 구성요소와 State Model 설계](http://github.com/rlaope/estudy/blob/master/brains/MLOps/durable_agent/agent_component.md)
- [Tool Calling과 MCP 기반 Tool 설계](http://github.com/rlaope/estudy/blob/master/brains/MLOps/durable_agent/tool_call.md)
- [Durable Execution과 Workflow 복구](http://github.com/rlaope/estudy/blob/master/brains/MLOps/durable_agent/durableworkflow.md)
- [GPU 하드웨어와 성능 모델](http://github.com/rlaope/estudy/blob/master/brains/MLOps/gpu.md)
- [SGLang 서빙 실전 케이스북](http://github.com/rlaope/estudy/blob/master/brains/MLOps/sglang.md)
- [모델 아키텍처별 서빙 플레이북](http://github.com/rlaope/estudy/blob/master/brains/MLOps/serving.md)
- [병렬화 전략 - TP, PP, EP, DP](http://github.com/rlaope/estudy/blob/master/brains/MLOps/np.md)
- [GPU 위에 모델이 뜨는 과정](http://github.com/rlaope/estudy/blob/master/brains/MLOps/gpumodel.md)
- [분산 서빙과 통신](http://github.com/rlaope/estudy/blob/master/brains/MLOps/distribute_serving.md)

----

#### Mathematics

- [선형대수학](http://github.com/rlaope/estudy/blob/master/brains/Math/README.md)
  - [연립선형방정식과 행렬](http://github.com/rlaope/estudy/blob/master/brains/Math/math1.md) 
- [가우스-조르당 소고법과 여러 가지 행렬](http://github.com/rlaope/estudy/blob/master/brains/Math/math2.md)
- [벡터공간과 내적](http://github.com/rlaope/estudy/blob/master/brains/Math/math3.md)
- [선형변환과 랭크정리](http://github.com/rlaope/estudy/blob/master/brains/Math/math4.md)
- [고윳값과 케일리-해밀턴 정리](http://github.com/rlaope/estudy/blob/master/brains/Math/math5.md)
- [행렬 분해](http://github.com/rlaope/estudy/blob/master/brains/Math/math6.md)
- [선형대수 실습 노트북 (LU·QR·고윳값·SVD)](http://github.com/rlaope/estudy/blob/master/brains/Math/linear_algebra_lab.ipynb)

Repository info

Default branch: master
Latest version: —
Created: 27/06/2022
Last activity: 23/10/2026
License: —
Open issues: 0
Watchers: 8

Topics

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