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Strangler PatternμΌλ‘ λ κ±°μ API μμ νκ² μ΄κ΄νκΈ°
2026/08/06
Design Pattern
Facade Pattern
Proxy Pattern
Kotlin
SpringBoot

MongoDBμμ PostgreSQLλ‘, νμλ 1,420λ§ κ±΄ 무μ€λ¨ μ΄κ΄κΈ°
2026/07/04
Database
Index
μ±λ₯ μ΅μ ν
νΈλ¬λΈμν

msgpack + snappy, μ λ§ μ΄λμΌκΉ? Node BFF Redis μΊμ μ§λ ¬ν κ°μ κΈ°
2026/07/04
node
Typescript
μ±λ₯ μ΅μ ν
json

BFF GraphQL N+1 νΈμΆ κ°μ : DataLoaderλ‘ 12μ½μ 1μ½λ‘
2026/07/02
N+1 λ¬Έμ
μ±λ₯ μ΅μ ν
node
Kotlin
νΈλ¬λΈμν

BFF λ°°ν¬ νμ΄νλΌμΈ(CD) μλ κ°μ κΈ°: 7λΆ 53μ΄μμ 3λΆ 30μ΄λ‘
2026/06/25
Docker
μ±λ₯ μ΅μ ν
node

TOCTOU λ μ΄μ€ 컨λμ
μ‘κΈ° - lock νλ νμ κ²μ¦ν΄μΌ νλ μ΄μ
2026/05/13
Kotlin
SpringBoot
Transaction
JPA
μ΄μμ΄μ
νΈλ¬λΈμν

Smooth Weighted Round Robin(SWRR)μΌλ‘ μΉ΄ν
κ³ λ¦¬ κ²μ μμ
λΆλ°°νκΈ°
2026/05/13
Algorithm
LoadBanacing
Kotlin
μ΄μμ΄μ

Raycastμμ Snowflake ID μμ±νκΈ° (Script Command)
2026/05/11
Python
Tip
mac

Snowflake IDλ₯Ό Spring Boot + JPAμμ μ¬μ©νκΈ° (Persistable)
2026/05/11
SpringBoot
JPA
Kotlin
Algorithm
μ±λ₯ μ΅μ ν

Snowflake IDλ? KotlinμΌλ‘ μ§μ ꡬννκΈ°
2026/05/11
Algorithm
Kotlin
Encryption
String

[λ€νμ±] Kotlinμ Any, * κ·Έλ¦¬κ³ Javaμ ?
2024/12/19
Generic
Kotlin
Java

IntelliJ ν
λ§ μ€μ (Material Theme UI Lite)
2024/11/27
Material Theme UI
IntelliJ
Sqids(ꡬ. hashids)λ₯Ό μ¬μ©νλ λ°©λ²
2024/08/04
Sqids
Hashids
Encryption


Springμμ HTTP μμ² λ‘κΉ
νκΈ°
2024/03/29
SpringBoot 3
HTTP
logging

Keystore, Truststore μ 리
2024/02/16
Encryption
Keystore
Truststore
JKS

Jetbrain Intellij λΆν νλ©΄ μ΄λνκΈ° λ¨μΆν€
2023/10/25
JetBrains
IntelliJ
ShortCut

Spring Security CORS + @Profile μ€μ λ°©λ² - Profile λ³λ‘ CORS λ€λ₯΄κ² μ€μ νκΈ°
2023/10/10
SpringBoot
SpringSecurity
Debug

Spring Boot 3.x - Spring security 6 migration guide
2023/10/09
SpringBoot
SpringBoot 3
SpringSecurity

κ²½νμ ν΅ν΄ μ»μ λ‘λ΄ νλ«νΌμ κ°λ°ν λ μμΉ
2023/09/22
Design

Spring boot 3 λ²μ μμ kotlin gradleμμ queryDSL μ€μ νκΈ°
2023/06/20
Kotlin
Gradle
QueryDSL
SpringBoot 3

Spring Bootμμ MySQL λ°μ΄ν°λ² μ΄μ€ Timezone μ€μ νλ λ°©λ²
2023/05/03
Database
SpringBoot
TimeZone

Kotlin Spring Bootμμ @CreationTimestamp, @UpdateTimestampμ μ€μ νλ λ°©λ²
2023/05/03
CreationTimestamp
UpdateTimestamp
Kotlin
SpringBoot

JWTμ HS512, HS256 secret key (signing key) μμ± λ°©λ²
2023/04/23
JWT
HS512
HS256
openssl
secret key

μ°κΈ° μ 볡μ¬(Copy-on-Write, CoW) - Docker μ΄λ―Έμ§ λ μ΄μ΄ κ΄λ¦¬ μ λ΅
2023/04/20
Docker
Copy-on-Write

Docker 컨ν
μ΄λ 격리 λ©μ»€λμ¦ μ΄ν΄νκΈ°
2023/04/20
Docker
mechanism

Spring JPAμμ N+1 λ¬Έμ ν΄κ²° λ°©λ² (fetch join, batch size, entity graph, querydsl)
2023/04/19
JPA
N+1 λ¬Έμ
fetch join
batch size
entity graph
QueryDSL

Spring JPAμμ joinκ³Ό fetch join μ°¨μ΄
2023/04/17
JPA
fetch join
join
XSSμ CSRF μ°¨μ΄
2023/04/15
μΉ λ³΄μ
XSS
CSRF

[RealMySQL 8.0] 10μ₯. μ€ν κ³ν (2)
2023/02/09
RealMySQL 8.0

[μκ³ λ¦¬μ¦] λ°±μ€ 1074λ² Z νμ΄μ¬ python
2023/01/30
Algorithm
Python
Divide And Conquer
Recursive

[μκ³ λ¦¬μ¦] λ°±μ€ 1149λ² RGB거리 νμ΄μ¬ python
2023/01/29
Algorithm
Python
Dynamic Programming

[JPA] μ½κΈ° μ μ© μΏΌλ¦¬ μ±λ₯ μ΅μ ν. @Transactional(readOnly = true) μμ보기
2023/01/25
JPA
μ½κΈ° μ μ© μΏΌλ¦¬
μ±λ₯ μ΅μ ν

[μ΄μ체μ ] 5. λ³λ ¬ μ²λ¦¬
2023/01/02
μ΄μ체μ
Operating System

[RealMySQL 8.0] κ³ κΈ μ΅μ ν 2
2022/12/08
RealMySQL 8.0

[μ΄μ체μ ] 4. μ»΄ν¨ν° μ±λ₯ ν₯μ κΈ°μ
2022/12/06
μ΄μ체μ
Operating System

[SOLID] OCP(Open Closed Principle) κ°λ°© νμ μμΉ
2022/10/04
SOLID
OCP

[μ΄μ체μ ] 3.CPUμ λ©λͺ¨λ¦¬
2022/11/30
μ΄μ체μ
Operating System

[μ΄μ체μ ] 2.μ»΄ν¨ν°μ κΈ°λ³Έ ꡬμ±
2022/11/30
μ΄μ체μ
Operating System

[μ΄μ체μ ] 1.μ΄μ체μ μ ꡬ쑰
2022/11/30
μ΄μ체μ
Operating System

[SOLID] SRP(Single Responsibility Principle) λ¨μΌ μ±
μ μμΉ
2022/11/29
SOLID
SRP

[Webstorm] logv. console.log with value
2022/11/17
Webstorm
logv
Live Template

Kubernetesμ pod ν λΉλμ§ μλ λ¬Έμ - EC2 IP κ°μ λΆμ‘± κ²½μ°
2022/11/09
Kubernetes
EC2
trouble shooting

asdfλ‘ Helm λ²μ κ΄λ¦¬νκΈ°
2022/11/07
asdf
helm

ν΄λΌμ°λ μλΉμ€ IaaS, CaaS, PaaS, SaaS λΉκ΅
2022/11/04
Cloud Service
IaaS
CaaS
PaaS
SaaS

Node Typescript νλ‘μ νΈμ Jest μ μ©νκΈ°
2022/10/31
Jest
Typescript
TestCode

νκΈ μ λμ½λ κ΅¬μ± μ΄ν΄λ³΄κΈ°
2022/10/31
Korean
Unicode
νκΈ
μ λμ½λ

Reactμμ μμ€λ§΅ μμ±νμ§ μκΈ°
2022/10/19
React
SourceMap

Macμμ Jenv + Temurin(ꡬ AdoptOpenJDK) 21, 17 μ€μΉνκΈ°
2022/10/16
Java
Jenv
Temurin
JDK

[RealMySQL 8.0] 8. μΈλ±μ€ (1/3)
2022/10/12
RealMySQL 8.0
Index
Index Range Scan

Spring Bootμμ DB + System + Spirng Boot Timezone μ²λ¦¬ λ°©λ²
2022/10/11
SpringBoot
TimeZone
Docker

asdfλ‘ Kubectlμ μ¬λ¬ λ²μ μ¬μ©νκΈ°
2022/10/04
Kubernetes
asdf
kubectl

Kotlin SpringBootμμ Jackson Library
2022/09/26
SpringBoot
Kotlin
DTO

SpringBootμμ JPA 쿼리 νλΌλ―Έν° νμΈνκΈ°
2022/09/26
SpringBoot
JPA
Log

Intellijμμ νμ¬ νμΌμ λͺ¨λ λΌμΈ multi select νκΈ°
2022/09/22
JetBrains
Multiple Cursors
Multiple Carets
Max Carret Size

[μκ³ λ¦¬μ¦] λ°±μ€ 1912λ² μ°μν© python. Dynamic Programming
2022/08/23
Algorithm
Python
Dynamic Programming

[μκ³ λ¦¬μ¦] λ°±μ€ 1699λ² μ κ³±μμ ν© python. Dynamic Programming
2022/08/21
Algorithm
Python
Dynamic Programming

Kotlin Spring. Abstract Classμ Entity μ getter final μ΄μ
2022/08/16
SpringBoot
Kotlin
trouble shooting

[μκ³ λ¦¬μ¦] λ°±μ€ 1654λ² λμ μλ₯΄κΈ° python. binary search
2022/08/16
Algorithm
Python
Binary Search

[RealMySQL 8.0] 4μ₯ μν€ν
μ² (1/4) - MySQL μμ§ μν€ν
μ²
2022/08/11
RealMySQL 8.0

[μκ³ λ¦¬μ¦] λ°±μ€ 1254λ² ν°λ¦°λ둬 λ§λ€κΈ° python - λ¬Έμμ΄
2022/08/09
Algorithm
Python
String Problem

[μκ³ λ¦¬μ¦] λ°±μ€ 1138λ² ν μ€λ‘ μκΈ° - μνμ μ¬κ³ λ ₯
2022/08/08
Algorithm
Python

[μκ³ λ¦¬μ¦] λ°±μ€ 1124λ² μΈλνλΌμ python - μμ, μνμ μ¬κ³ λ ₯
2022/08/07
Algorithm
Python
Prime Number
Eratosthenes Sieve

[RealMySQL 8.0] 3μ₯ μ¬μ©μ λ° κΆν
2022/08/04
RealMySQL 8.0
3μ₯

[RealMySQL 8.0] 2μ₯ μ€μΉμ μ€μ
2022/08/03
RealMySQL 8.0
2μ₯

[RealMySQL 8.0] 1μ₯. μκ° + μλ¬Έ
2022/08/03
RealMySQL 8.0
1μ₯

λ§₯OS 13 Ventura public beta2 μ
λ°μ΄νΈ ν xcode14 μ€μΉ. xcode μλμΌλ‘ μ€μΉνκΈ°
2022/08/02
mac
xcode

Spring SecurityFilterChain μ¬μ©μ WebMvcTest μ€ν¨ ν΄κ²° λ°©λ²
2022/07/31
SpringBoot
SpringSecurity
WebMvcTest

[μκ³ λ¦¬μ¦] λ°±μ€ 2644λ² μ΄μκ³μ°
2022/07/28
Algorithm
Python
BFS

Dijkstra λ€μ΅μ€νΈλΌ μκ³ λ¦¬μ¦ μ 리
2022/07/26
Algorithm
Dijkstra

JUnit5, AssertJμμ Exception ν
μ€νΈ μ½λ μμ±. How to test Exception in JUnit5, AssertJ
2022/07/10
TestCode
JUnit5

Springμμ Gradle λ²μ μ¬λ¦¬κΈ°, Gradlew κ°λ³κ² μ΄ν΄λ³΄κΈ°
2022/07/24
SpringBoot
Gradle

mockito-kotlin μ¬μ© κΈ°λ‘. capture, eq
2022/07/24
Kotlin
TestCode
mock

[μκ³ λ¦¬μ¦] λ°±μ€ 2606 λ°μ΄λ¬μ€ python - dfs, bfs
2022/07/23
Algorithm
Python
DFS
BFS
Graph

[μκ³ λ¦¬μ¦] λ°±μ€ 2579λ² κ³λ¨ μ€λ₯΄κΈ° python - Dynamic Programming
2022/07/23
Algorithm
Python
Dynamic Programming

[μκ³ λ¦¬μ¦] λ°±μ€ 1269λ² λμΉ μ°¨μ§ν© python - ν΄μ λ§΅, μ§ν©
2022/07/19
Algorithm
Python
HashMap

[μκ³ λ¦¬μ¦] λ°±μ€ 1213λ² ν°λ¦°λ둬 λ§λ€κΈ° python - ꡬν μ ν
2022/07/18
Algorithm
Python
Implementation

kotlinμ springdoc openapiμμ RequestBodyμ λ³μλ₯Ό optional μ²λ¦¬
2022/07/12
SpringBoot
swagger
openapi

[μκ³ λ¦¬μ¦] μ΄μ§νμ Binary Search
2022/07/10
Binary Search
Algorithm

[μκ³ λ¦¬μ¦] λ°±μ€ 1072λ² κ²μ python. binary search μ΄μ§νμ
2022/07/11
Algorithm
Python
Binary Search

[μκ³ λ¦¬μ¦] λ°±μ€ 1183λ² μ½μ
2022/07/10
Algorithm
Python
Math

[μκ³ λ¦¬μ¦] λ°±μ€ 1463λ² 1λ‘ λ§λ€κΈ° python Dynamic Programming
2022/07/10
Algorithm
Python
Dynamic Programming

[DB] νΈλμμ
(1/3)
2022/07/03
DB
Transaction

Floyd-Warshall νλ‘μ΄λ-μμ
μκ³ λ¦¬μ¦
2022/07/10
Algorithm
Floyd-Warshall

[μκ³ λ¦¬μ¦] λ°±μ€ 1063λ² νΉ python
2022/07/10
Algorithm
Python
Simulation

[μκ³ λ¦¬μ¦] λ°±μ€ 1058λ² μΉκ΅¬ python
2022/07/09
Algorithm
Python
Floyd-Warshall

[μκ³ λ¦¬μ¦] λ°±μ€ 1057λ² ν λλ¨ΌνΈ python
2022/07/09
Algorithm
Python
Implementation
Brute Force

kotlin gradleμμ queryDSL μ€μ νκΈ°
2022/07/07
Kotlin
Gradle
QueryDSL


[μκ³ λ¦¬μ¦] λ°±μ€ 1004λ² μ΄λ¦° μμ python
2022/07/05
Algorithm
Python

[μκ³ λ¦¬μ¦] λ°±μ€ 1931λ² νμμ€ λ°°μ python
2022/07/05
Algorithm
Greedy
Python

[JPA] μΌλλ€, μΌλμΌ μ°κ΄κ΄κ³ ν¨κ» μ μ₯ cascade
2022/07/04
SpringBoot
JPA
Cascade
Relation

[μκ³ λ¦¬μ¦] λ°±μ€ 1676λ² ν©ν λ¦¬μΌ 0μ κ°μ python
2022/07/03
Algorithm
Python

[μκ³ λ¦¬μ¦] λ°±μ€ 1251λ² λ¨μ΄ λλκΈ° python
2022/06/30
Algorithm
Python

Kotlin + Spring Bootμμ Captor, capture μ¬μ© μμ
2022/06/16
trouble shooting
TestCode
Kotlin
SpringBoot

AWS Lambdaμμ dependecy μμ΄ HTTPS μμ² λ³΄λ΄κΈ° - node code snippet
2022/05/26
AWS
Lambda
AWS Lambda
javascript
node
HTTPS

Json Web Token(JWT) λΉ λ₯΄κ² μ 리
2022/05/21
JWT

JetBrains IDE (IntelliJ, WebStorm, PyCharm, etc) μ μ©ν λ¨μΆν€, νλ¬κ·ΈμΈ
2022/04/21
JetBrains
IntelliJ
ShortCut
Plugin
Tip

[ν΄λ¦°μ½λ] 10μ₯ ν΄λμ€
2022/04/27
CleanCode
Java

[ν΄λ¦°μ½λ] 4μ₯ μ£Όμ - λμ μ£Όμ
2022/07/01
ν΄λ¦°μ½λ
CleanCode
Comment

[ν΄λ¦°μ½λ] 4μ₯ μ£Όμ - μ’μ μ£Όμ
2022/04/18
CleanCode
ν΄λ¦°μ½λ
Comment

[ν΄λ¦°μ½λ] 3μ₯ ν¨μ (2/2)
2022/06/20
CleanCode
ν΄λ¦°μ½λ
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Cloudflare Email Routing μ리 - MX/SPF/DKIMκ³Ό SRS λ΄ν¬ μ¬μμ±
2026/08/17
Domain

Kubernetes ConfigMap μμ±νκ³ Podμ μ¬μ©νκΈ°
2023/05/04
Kubernetes
ConfigMap

kubectlλ‘ AWS EKS cluster μ°κ²°νκΈ°
2023/05/04
AWS
EKS
kubectl

AWS EBS CSI λλΌμ΄λ² μ€μΉνκΈ° (add-on λ°©μμΌλ‘ μλ μ€μΉ)
2023/04/30
AWS EBS CSI λλΌμ΄λ²
Kubernetes
Storage Class

AWS CLIλ‘ MFA λ‘κ·ΈμΈνκΈ° + μλν μ€ν¬λ¦½νΈ
2022/10/10
AWS
MFA
Cloud Function
Profile
Shell Script

AWS Amplifyλ‘ λ°°ν¬ν μΉμ¬μ΄νΈ λΉλ°λ²νΈ μ€μ νλ λ°©λ²
2022/09/20
AWS
Amplify
Password

[AWS] MFAλ₯Ό νμλ‘ μ€μ νλ IAM
2022/09/13
AWS
IAM
MFA

AWS S3λ₯Ό CloudFront ν΅ν΄μλ§ μ κ·ΌνκΈ° (OAI)
2022/06/03
S3
CloudFront
AWS

Load Balancerμ CloudFrontμ Route53 μ°κ²°νκΈ° (HTTPS μ μ©κΉμ§)
2022/05/22
AWS
Load Balancer
CloudFront
Domain

AWS Amplifyλ‘ React λ°°ν¬νκΈ°
2022/05/21
AWS
Amplify
React
Deploy

AWS ECS Fargateλ‘ λ°°ν¬νκΈ°
2022/02/28
AWS
ECS
Fargate
Deploy

AWS VPC μ€μ
2022/02/16
AWS
VPC

URL 리λ€μ΄λ νΈ κ΅¬ν AWS S3 + Cloudfront + Route53
2021/12/02
AWS
S3
CloudFront
Route53

ECS Taskμ IAM role μΆκ°νλ λ°©λ²
2021/11/24
AWS
ECS
IAM

AWS WAFλ₯Ό μ΄μ©νμ¬ IP μ°¨λ¨νκΈ°
2021/11/21
AWS
WAF
abusing

AWS WAF(Web Application Firewall)α
α
³α― αα
΅αα
αΌαα
‘αα
§ abusing μ μ IP λ‘κΉ
νκΈ°
2021/11/17
AWS
WAF
CloudWatch

GCP Cloud FunctionμΌλ‘ FCM λ©μμ§ λ³΄λ΄κΈ° + Pub/Sub
2021/09/29
GCP
Cloud Function
FCM
Pub/Sub

SpringΒ Bootμ GCP Pub/Sub μ°λνκΈ°
2021/09/08
GCP
Pub/Sub
Spring Boot

μ΄λ―Έμ§Β 리μ¬μ΄μ¦ CloudFront + Lambda@Edge
2021/07/13
AWS
CloudFront
Lambda@Edge

Cloudfront url μ μνλ©΄ S3 urlλ‘ λ¦¬λ€μ΄λ νΈλλ λ¬Έμ . Redirect CloudFront Url to S3 location problem
2021/06/09
AWS
CloudFront
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List
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μ΄κΈ°μ μΈ νμ₯ μ¬μ© μ€λͺ
μ - λ°μ€κ·Ό
2022/07/06
μκΈ°κ³λ°
μΌμλ¬


(λ
μμ€
)5μ΄μ λ²μΉ
)5μ΄μ λ²μΉμκΈ°κ³λ°
νλ
λΌμ΄νμ€νμΌ


κ²μΌλ₯Έ λμ νλ μ€μμΉλ₯Ό μΌλΌ
2022/05/31
μκΈ°κ³λ°


μ°λ¦¬κ° μΈμμ΄λΌ λΆλ₯΄λ κ²λ€ - μ μ¬μ°¬
2021/12/19
μΈλ¬Έν
μΆ
μΈμ
μ¬λ
κ°μ‘±
λΆλͺ¨


λλ λ무μ²λΌ μ΄κ³ μΆλ€ - μ°μ’
μ
2021/12/09
μΈλ¬Έν
μΆ
μΈμ
μμ°

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