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  • Hello, World
  • 1) JAVA
    • JVM
    • String, StringBuffer, StringBuilder
    • JDK 8 ํŠน์ง•
    • ์Šคํƒ ์˜ค๋ฒ„ ํ”Œ๋กœ์šฐ(SOF)
    • ๋ธ”๋Ÿญํ‚น | ๋…ผ๋ธ”๋Ÿญํ‚น | ๋™๊ธฐ | ๋น„๋™๊ธฐ
    • ENUM
    • STATIC
    • hashCode()์™€ equals()
    • STREAM
    • Collection
    • Optional
    • Serializable
    • ๋žŒ๋‹ค์™€ ํด๋กœ์ €
    • Exception(์˜ˆ์™ธ)
    • Garbage Collecter
    • Call by Value & Call by Reference
    • ๋นŒ๋“œ ๊ฐœ๋… ์ •๋ฆฌ
    • ์ œ๋„ค๋ฆญ(Generic)
    • Thread(์“ฐ๋ ˆ๋“œ)
    • ์‹ฑ๊ธ€์Šค๋ ˆ๋“œ vs ๋ฉ€ํ‹ฐ์Šค๋ ˆ๋“œ
    • ์“ฐ๋ ˆ๋“œ(Threads)์™€ ๋™๊ธฐํ™”(Synchronization)
    • ์ž๋ฐ” Multi Thread ํ™˜๊ฒฝ์—์„œ ๋™์‹œ์„ฑ ์ œ์–ด
    • ์ž๋ฐ” ์‹ฑ๊ธ€ํ†ค ํŒจํ„ด
  • 2) SRPING
    • ์ „์ฒด์ ์œผ๋กœ ๋ชจ์•„๋ณผ๊นŒ
    • Spring ํŠน์ง•
    • Spring Boot ํŠน์ง•
    • Spring 5 ํŠน์ง•
    • Stereo Type(์Šคํ…Œ๋ ˆ์˜ค ํƒ€์ž…)
    • JPA vs MyBatis
    • JPA Repository ๊ทœ์น™
    • JPA Auditing
    • JPA Auditing ์‚ฌ์šฉํ•˜๊ธฐ
    • JPA Auditing๊ณผ ์ œ๋Œ€๋กœ ์•Œ์•„์•ผ ํ•  @PreUpdate
    • JPA - ์—”ํ‹ฐํ‹ฐ ์‹๋ณ„์ž ์ง์ ‘ํ• ๋‹น์‹œ save ์„ฑ๋Šฅ ์ตœ์ ํ™”(Persistable)
    • JPA ์ •๋ฆฌ
    • Projection
    • queryDsl
    • Fetch Join vs ์ผ๋ฐ˜ Join(feat.DTO)
    • N+1 ๋ฌธ์ œ
    • OSIV
    • ์˜์†์„ฑ ์ปจํ…์ŠคํŠธ(Persistence Context)
    • @Transactional
    • TransactionalEventListener
    • Filter์™€ Interceptor
      • ๊ทธ๋ฆผ์œผ๋กœ ๋ณด๋Š” Filter์™€ Interceptor
    • HttpSecurity, WebSecurity์˜ ์ฐจ์ด
    • @Controlleradvice, @ExceptionHandler
    • @EnableWebMvc
    • Spring5 ๋ฆฌ์•กํ‹ฐ๋ธŒ (Web flux)
    • WebFlux
    • Spring MVC vs WebFlux
    • Spring WebFlux + Redis
    • Spring Webflux ์˜ˆ์™ธ์ฒ˜๋ฆฌ
    • Spring Security
    • Spring Security ์—์„œ ์ธ์ฆ ๊ณผ์ •
    • Spring Security Filter ์ ์šฉ
    • SpringBoot์™€ Retrofit ์—ฐ๋™
    • Dispatcher Servlet
    • MapStruct
    • ์ž๋ฐ” ์ฝ”๋“œ ๋งคํ•‘ vs MapStruct vs ModelMapper
    • ๋‚™๊ด€์ (Optimistic) ๋ฝ๊ณผ ๋น„๊ด€์ (Pessimisitc)๋ฝ
      • [JPA] jpa์—์„œ Repository๋ฅผ ์ด์šฉํ•œ ๋‚™๊ด€์ ๋ฝ์„ ๊ตฌํ˜„
      • [JPA] jpa์—์„œ Repository๋ฅผ ์ด์šฉํ•œ ๋น„๊ด€์ ๋ฝ์„ ๊ตฌํ˜„
    • AOP
  • 3) INFRA
    • Linux basic command
    • GIT
    • Docker
      • M1 Docker with lima
    • Docker-compose
    • DNS ๋™์ž‘ ์›๋ฆฌ
    • MongoDB
    • Kafka
    • Spring Webflux + Reactive Kafka
      • Spring Webflux + Reactive Kafka (1) - Producer
      • Spring Webflux + Reactive Kafka (2) - Consumer
    • Redis
    • ELK
    • graphQl
    • JWT
  • 4) DATABASE
    • Database Index
    • SQL vs NoSQL
    • DB ๊ต์ฐฉ์ƒํƒœ
    • Isolation level
    • SQL Hint
    • JOIN
  • 5) ARCHITECTURE
    • ๊ฐ์ฒด์ง€ํ–ฅ๊ณผ ์ ˆ์ฐจ์ง€ํ–ฅ
    • ์ƒ์†๋ณด๋‹จ ํ•ฉ์„ฑ
    • SOLID ์›์น™
    • ์บก์Šํ™”
    • ์ด๋ฒคํŠธ ๋“œ๋ฆฌ๋ธ ์•„ํ‚คํ…์ณ & ์“ฐ๋ ˆ๋“œ
    • ๋…ผ๋ธ”๋Ÿญํ‚น, ๋™์‹œ์„ฑ, ๋ณ‘๋ ฌ, ๋น„๋™๊ธฐ
    • AWS MSA ARCHITECTURE
  • 6) COMPUTER SCIENCE
    • NetWork, IP์ข…๋ฅ˜ (๊ณต์ธIP, ์‚ฌ์„คIP, ๊ณ ์ •IP, ์œ ๋™IP)
    • REST API
    • HTTP HEADER
    • HTTP METHOD
    • HTTP STATUS
    • OSI 7 Layer
    • SSL
  • 7) KOTLIN OFFICIAL
    • BASIC
    • Classes and Objects
      • Classes and Inheritance
      • Properties and Fields
  • 8) KOTLIN
    • Kotest
    • ํŒŒ์ผ ์••์ถ• ํ•ด๋ณด์ž
    • runCatching์„ ์ด์šฉํ•œ kotlin์—์„œ exception์ฒ˜๋ฆฌ ๋ฐฉ๋ฒ•
    • ์ฝ”ํ‹€๋ฆฐ Webclient PKIX ์ด์Šˆ?
    • ์ฝ”ํ‹€๋ฆฐ์œผ๋กœ CSR/CRT ๋งŒ๋“ค์–ด๋ณด์ž
    • ์–‘๋ฐฉํ–ฅ ์•”ํ˜ธํ™”๋ฅผ ์ด์šฉํ•ด๋ณด์ž
    • ์ฝ”ํ‹€๋ฆฐ์œผ๋กœ dynamoDB
    • ์ฝ”๋ฃจํ‹ด ๊ฐœ๋…
      • ์ฝ”๋ฃจํ‹ด Basic1
      • ์ฝ”๋ฃจํ‹ด Basic2
    • ์ฝ”๋ฃจํ‹ด์ด๋ž€? ์‰ฝ๊ฒŒ!
    • Thread vs Coroutine
  • 9) SVELTE
  • 10) PHP, Laravel
  • 11) DOCKER-KUBERNETES
    • Minikube
  • 12) GRAPHQL
  • 13) AWS
    • VPC
    • EC2
    • EC2๋กœ ์„œ๋ฒ„ํ™˜๊ฒฝ ๊ตฌ์ถ•
    • RDS DB ํ™˜๊ฒฝ๊ตฌ์ถ•
    • S3
    • Route53
    • Amazon MSK(Managed Streaming for Apache Kafka)
    • AWS PINPOINT
    • AWS์— Spring Boot ํ”„๋กœ์ ํŠธ ๋ฐฐํฌ 1 - RDS, MySQL ์„ธํŒ…
    • AWS์— Spring Boot ํ”„๋กœ์ ํŠธ ๋ฐฐํฌ 2 - EC2 ์„ธํŒ…๏ผ†๋ฐฐํฌ , ๋„๋ฉ”์ธ ์—ฐ๊ฒฐ
    • AWS Spring Error log CloudWatch๋กœ ์ „์†กํ•˜๋Š” ๋ฒ•
    • AWS Xray -spring boot์—์„œ aop๋ฅผ ์ด์šฉํ•ด xray ๊ตฌ์„ฑํ•˜๊ธฐ
  • 14 ) CI / CD / DevOps / SRE
    • CLOUD COMPUTING
    • Container Orchestration
      • ์ฟ ๋ฒ„๋„คํ‹ฐ์Šค ๊ธฐ์ดˆ Part 1
      • ์ฟ ๋ฒ„๋„คํ‹ฐ์Šค ๊ธฐ์ดˆ Part 2
      • ์ฟ ๋ฒ„๋„คํ‹ฐ์Šค ๊ธฐ์ดˆ Part 3
    • Jenkins
    • Jenkins ์„ธํŒ…
      • Jenkins 1 - install
      • Jenkins 2 - java ์„ค์ •
      • Jenkins 3 - github ์—ฐ๋™
      • Jenkins 4 - .jar๋ฐฐํฌ (๊นƒํ—™)
      • Jenkins 5 - EC2 ๋„์ปค์—์„œ ์  ํ‚จ์Šค ์‹คํ–‰ํ•˜๊ธฐ
      • Jenkins 6 - ํŒŒ์ดํ”„๋ผ์ธ ์žก ๋งŒ๋“ค๊ธฐ
      • Jenkins 7 - ์„œ์ˆ ์  ํŒŒ์ดํ”„๋ผ์ธ ๋ฌธ๋ฒ•
      • Jenkins 8 - ๋ฉ€ํ‹ฐ๋ธŒ๋žœ์น˜ ํŒŒ์ดํ”„๋ผ์ธ
      • Jenkins 9 - ๋ธ”๋ฃจ์˜ค์…˜
    • Jenkins zombie job kill
    • Jenkins & Codebuild(aws)
    • Jenkins & Terraform
    • Datadog
      • Datadog Log ํ•œ๊ธ€์ด ๊นจ์ง€๋Š” ๊ฒฝ์šฐ
      • Datadog custom span tag ์—ฐ๋™(kotlin-webflux)
      • Datadog application profiling ํ™œ์„ฑํ™”
    •  terraform
  • 15) Troubleshooting
    • Spring boot 3.0
      • Spring data jpa
    • Jpa Converter ํŠธ๋Ÿฌ๋ธ” ์ŠˆํŒ… ๊ธฐ๋ก
  • ๋ ˆํผ๋Ÿฐ์Šค
    • ALGORITHM
      • ์ƒํ™œ์ฝ”๋”ฉ
      • ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค
      • ๋ฐฑ์ค€
      • ์•Œ๊ณ ์ŠคํŒŸ
      • ์ฝ”๋”œ๋ฆฌํ‹ฐ
      • ๊ตฌ๋ฆ„
      • ๋ฆฟ์ฝ”๋“œ
  • ์Šคํ„ฐ๋””
    • ์ฝ”ํ‹€๋ฆฐ ์ฟก๋ถ
      • 2์žฅ ์ฝ”ํ‹€๋ฆฐ ๊ธฐ์ดˆ
      • 3์žฅ ์ฝ”ํ‹€๋ฆฐ ๊ฐ์ฒด์ง€ํ–ฅ ํ”„๋กœ๊ทธ๋ž˜๋ฐ
      • 4์žฅ ํ•จ์ˆ˜ํ˜• ํ”„๋กœ๊ทธ๋ž˜๋ฐ
      • 5์žฅ ์ปฌ๋ ‰์…˜
      • 6์žฅ ์‹œํ€€์Šค
      • 9์žฅ ํ…Œ์ŠคํŠธ
      • 10์žฅ ์ž…๋ ฅ/์ถœ๋ ฅ
      • 11์žฅ ๊ทธ ๋ฐ–์˜ ์ฝ”ํ‹€๋ฆฐ ๊ธฐ๋Šฅ
    • ์ฝ”ํ‹€๋ฆฐ ๋™์‹œ์„ฑ ํ”„๋กœ๊ทธ๋ž˜๋ฐ
      • 1์žฅ Hello, Concurrent World!
      • 2์žฅ ์ฝ”๋ฃจํ‹ด ์ธ ์•ก์…˜
      • 3์žฅ ๋ผ์ดํ”„ ์‚ฌ์ดํด๊ณผ ์—๋Ÿฌ ํ•ธ๋“ค๋ง
      • 4์žฅ ์ผ์‹œ ์ค‘๋‹จ ํ•จ์ˆ˜์™€ ์ฝ”๋ฃจํ‹ด ์ปจํ…์ŠคํŠธ
      • 5์žฅ ์ดํ„ฐ๋ ˆ์ดํ„ฐ, ์‹œํ€€์Šค ๊ทธ๋ฆฌ๊ณ  ํ”„๋กœ๋“€์„œ
      • 7์žฅ ์Šค๋ ˆ๋“œ ํ•œ์ •, ์•กํ„ฐ ๊ทธ๋ฆฌ๊ณ  ๋ฎคํ…์Šค
    • ๊ฐ์ฒด ์ง€ํ–ฅ๊ณผ ๋””์ž์ธํŒจํ„ด
      • ๊ฐ์ฒด ์ง€ํ–ฅ
      • ๋‹คํ˜•์„ฑ๊ณผ ์ถ”์ƒ ํƒ€์ž…
      • ์žฌ์‚ฌ์šฉ: ์ƒ์†๋ณด๋‹จ ์กฐ๋ฆฝ
      • ์„ค๊ณ„ ์›์น™: SOLID
      • DI์™€ ์„œ๋น„์Šค ๋กœ์ผ€์ดํ„ฐ
      • ์ฃผ์š” ๋””์ž์ธํŒจํ„ด
        • ์ „๋žตํŒจํ„ด
        • ํ…œํ”Œ๋ฆฟ ๋””์ž์ธ ํŒจํ„ด
        • ์ƒํƒœ ํŒจํ„ด
        • ๋ฐ์ฝ”๋ ˆ์ดํ„ฐ ํŒจํ„ด
        • ํ”„๋ก์‹œ ํŒจํ„ด
        • ์–ด๋Œ‘ํ„ฐ ํŒจํ„ด
        • ์˜ต์ €๋ฒ„ ํŒจํ„ด
        • ํŒŒ์‚ฌ๋“œ ํŒจํ„ด
        • ์ถ”์ƒ ํŒฉํ† ๋ฆฌ ํŒจํ„ด
        • ์ปดํฌ์ง€ํŠธ ํŒจํ„ด
    • ํด๋ฆฐ์ฝ”๋“œ
      • 1์žฅ ๊นจ๋—ํ•œ ์ฝ”๋“œ
      • 2์žฅ ์˜๋ฏธ ์žˆ๋Š” ์ด๋ฆ„
      • 3์žฅ ํ•จ์ˆ˜
      • 4์žฅ ์ฃผ์„
      • 5์žฅ ํ˜•์‹ ๋งž์ถ”๊ธฐ
      • 6์žฅ ๊ฐ์ฒด์™€ ์ž๋ฃŒ ๊ตฌ์กฐ
      • 9์žฅ ๋‹จ์œ„ ํ…Œ์ŠคํŠธ
    • ์ดํŽ™ํ‹ฐ๋ธŒ ์ž๋ฐ”
    • ๋งˆ์ดํฌ๋กœ์„œ๋น„์Šค ์•„ํ‚คํ…์ฒ˜ ๊ตฌ์ถ•
      • MSA๋ฅผ ์ง€ํƒฑํ•˜๋Š” ๊ธฐ๋ณธ ๊ฐœ๋…
      • ๋ฐฐํฌ์™€ ๋ชจ๋‹ˆํ„ฐ๋ง๋ฅผ ๊ฑฐ์ณ ๋Œ€๊ทœ๋ชจ ๋งˆ์ดํฌ๋กœ์„œ๋น„์Šค
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Hello, World

Next1) JAVA

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