Java & Spring Boot

See All Lecture DB Error 블록체인(BlockChain)System/Network Java & Spring Boot Book Etc.Js/Ts AWS Node.js Docker Kubernetes Security Java & JPA & Hibernate Redis AI

Spring Cloud Vault : invalid token

영구적인 Role Id가 생성하는 temporary token

Apr 22, 2026

Java & Spring BootSecurity

Spring Boot Relaxed Binding으로 인한 Gateway Connection Refused

Spring Boot의 환경 변수 매핑은 어떻게 돌아가는 걸까?

Nov 19, 2025

Java & Spring BootError

Promtail + Loki, 서버 실시간 로그 모니터링

딸깍으로 서버로그를 수집해보자

Nov 04, 2025

System/NetworkJava & Spring BootDocker

Spring Cloud Gateway에서 발생한 UnsupportedOperationException

왜 null 입니까?

Oct 09, 2025

Java & Spring BootSystem/NetworkSecurity

고성능 JPA & Hibernate - Connection Management and Hibernate Connection Providers

JPA Connection 연결과 공급자

Jul 11, 2025

LectureJava & Spring BootJava & JPA & HibernateDB

Spring Cloud Vault : invalid token

영구적인 Role Id가 생성하는 temporary token

Apr 22, 2026

Java & Spring BootSecurity

Spring Boot Relaxed Binding으로 인한 Gateway Connection Refused

Spring Boot의 환경 변수 매핑은 어떻게 돌아가는 걸까?

Nov 19, 2025

Java & Spring BootError

Promtail + Loki, 서버 실시간 로그 모니터링

딸깍으로 서버로그를 수집해보자

Nov 04, 2025

System/NetworkJava & Spring BootDocker

Spring Cloud Gateway에서 발생한 UnsupportedOperationException

왜 null 입니까?

Oct 09, 2025

Java & Spring BootSystem/NetworkSecurity

고성능 JPA & Hibernate - Connection Management and Hibernate Connection Providers

JPA Connection 연결과 공급자

Jul 11, 2025

LectureJava & Spring BootJava & JPA & HibernateDB

고성능 JPA & Hibernate - Intergration Testing With Docker

H2 대신 tmpfs?

Jul 07, 2025

Java & Spring BootDBJava & JPA & Hibernate

고성능 JPA & Hibernate - Logging SQL Statements

Hibernate Logging에 대하여...

Jul 04, 2025

Java & Spring BootJava & JPA & HibernateDBLecture

Spring Boot - 예외(Exception) 처리에 관해서

Spring Boot Exception .

Jun 10, 2025

Java & Spring BootError

Spring Boot, Redisson 분산 락(Distributed Lock)

Synchronizer Control with Spring Redisson Distributed Lock

Jan 08, 2025

DBJava & Spring BootSystem/NetworkEtc.Redis

ANTLR Tool version … used for code generation does not match the current runtime version …

Version mismatch between Hibernate and Spring Data JPA (EX : Cannot invoke "org.antlr.v4.runtime.ParserRuleContext.getParent()" because "ctx" is null)

Jan 07, 2025

Java & JPA & HibernateErrorJava & Spring Boot

Spring boot, JPA (3) - 1차 캐시

1차 캐시와 2차 캐시 등, JPA Cache 사용법

Dec 03, 2024

DBJava & Spring BootJava & JPA & Hibernate

Spring boot, JPA (2) - 영속성 컨텍스트(Persistence Context)

JPA 영속성 컨텍스트 요약

Dec 03, 2024

DBJava & JPA & HibernateJava & Spring Boot

Spring boot, JPA (1) - Entity Manager란?

Spring boot JPA Entity Manager

Dec 03, 2024

DBJava & Spring BootJava & JPA & Hibernate

Java & Spring boot, Thread Safety 하지 않은 Singleton 객체(JSONParser)

Spring boot에서 com.googlecode.json-simple:json-simple 라이브러리를 사용할 때 싱글톤으로 만들면 안되는 이유

Nov 01, 2024

Java & Spring BootErrorSystem/Network

Spring boot, JPA could not initialize proxy - no Session

closing the session or not keeping the session open to fetch the LAZY loaded objects.

Sep 24, 2024

DBErrorEtc.Java & Spring BootSystem/NetworkJava & JPA & Hibernate

Spring boot, Caused by: java.lang.IllegalStateException: Ambiguous mapping. Cannot map 'xxxxController' method

RequestMapping Duplicated ERROR

Aug 30, 2024

Java & Spring BootError

RDS SSL 인증서 만료, Caused by: java.security.cert.CertificateExpiredException : NotAfter

rds certificate expired

Aug 23, 2024

DBErrorJava & Spring BootAWS

Spring Boot, Which one should i use @Transactional ?

Which one should you use: @javax.transaction.Transactional or @org.springframework.transaction.Transactional?

Aug 20, 2024

DBJava & Spring BootJava & JPA & Hibernate

MyBatis에서 AUTO INCREMENT 값 가져오기

How to Retrieve the Inserted ID in MyBatis

Aug 19, 2024

DBJava & Spring Boot

Clean Architecture 개념과 의존성 역전 원칙(DIP)

How does Clean Architecture follow to the DIP (Dependency Inversion Principle) ?

Aug 18, 2024

Etc.Java & Spring BootSystem/Network

JAVA, Error : java.lang.StackOverflowError

재귀호출로 발생하는 무한루프

Aug 05, 2024

Java & Spring BootErrorSystem/Network

Spring boot, Exiting but response remains open for further handling

Servlet Async 비동기 통신의 무한 pending이 걸렸을 때는 타임아웃을 걸어주자

Jul 25, 2024

ErrorSystem/NetworkJava & Spring Boot

Hibernate error, org.hibernate.query.SemanticException: The assignment expression type

Hibernate

Jul 24, 2024

Java & Spring BootDBError

Spring Boot 3, Hibernate JPA Debug : Encountered deprecated setting [javax.persistence.sharedCache.mode], use [jakarta.persistence.sharedCache.mode] instead

jpa cahce 설정 관련 debugging

Jul 05, 2024

Java & Spring BootDBErrorJava & JPA & Hibernate

Spring boot 3, AWS Redshift + JPA + Tsid

Spring boot에서 jpa로 redshift를 쓰고 싶다면..

Jul 04, 2024

DBJava & Spring BootAWS

Spring boot 3 Migration MySQL ⇒ MariaDB

MySQL에서 MariaDB 로

Jun 26, 2024

DBJava & Spring BootJava & JPA & Hibernate

Spring boot Execution failed for task ':compileQuerydsl'. + Mac

Jun 07, 2024

ErrorJava & Spring BootJava & JPA & Hibernate

Spring boot Composite-id class does not override equals()

Jun 06, 2024

Java & Spring BootError

Spring boot 3, Hibernate ERROR Caused by: java.lang.ClassNotFoundException: Could not load requested class

Jun 06, 2024

Java & Spring BootError

Spring 3.0 Unable to resolve name

[org.springframework.boot.orm.jpa.hibernate.SpringPhysicalNamingStrategy] as strategy [org.hibernate.boot.model.naming.PhysicalNamingStrategy]

Jun 06, 2024

Java & Spring BootError

Java의 정석(3) - 연산자(operator)

May 30, 2024

Java & Spring BootBook

Java의 정석(2) - 변수 variable

Chapter 02 변수 variable

Mar 31, 2024

Java & Spring BootBook

Java의 정석(1) - Java를 시작하기 전에

Chapter 01 Java를 시작하기 전에

Mar 30, 2024

BookJava & Spring Boot

vlogue

Spring Cloud Vault : invalid token

Spring Boot Relaxed Binding으로 인한 Gateway Connection Refused

Promtail + Loki, 서버 실시간 로그 모니터링

Spring Cloud Gateway에서 발생한 UnsupportedOperationException

고성능 JPA & Hibernate - Connection Management and Hibernate Connection Providers

Spring Cloud Vault : invalid token

Spring Boot Relaxed Binding으로 인한 Gateway Connection Refused

Promtail + Loki, 서버 실시간 로그 모니터링

Spring Cloud Gateway에서 발생한 UnsupportedOperationException

고성능 JPA & Hibernate - Connection Management and Hibernate Connection Providers

고성능 JPA & Hibernate - Intergration Testing With Docker

고성능 JPA & Hibernate - Logging SQL Statements

Spring Boot - 예외(Exception) 처리에 관해서

Spring Boot, Redisson 분산 락(Distributed Lock)

ANTLR Tool version … used for code generation does not match the current runtime version …

Spring boot, JPA (3) - 1차 캐시

Spring boot, JPA (2) - 영속성 컨텍스트(Persistence Context)

Spring boot, JPA (1) - Entity Manager란?

Java & Spring boot, Thread Safety 하지 않은 Singleton 객체(JSONParser)

Spring boot, JPA could not initialize proxy - no Session

Spring boot, Caused by: java.lang.IllegalStateException: Ambiguous mapping. Cannot map 'xxxxController' method

RDS SSL 인증서 만료, Caused by: java.security.cert.CertificateExpiredException : NotAfter

Spring Boot, Which one should i use @Transactional ?

MyBatis에서 AUTO INCREMENT 값 가져오기

Clean Architecture 개념과 의존성 역전 원칙(DIP)

JAVA, Error : java.lang.StackOverflowError

Spring boot, Exiting but response remains open for further handling

Hibernate error, org.hibernate.query.SemanticException: The assignment expression type

Spring Boot 3, Hibernate JPA Debug : Encountered deprecated setting [javax.persistence.sharedCache.mode], use [jakarta.persistence.sharedCache.mode] instead

Spring boot 3, AWS Redshift + JPA + Tsid

Spring boot 3 Migration MySQL ⇒ MariaDB

Spring boot Execution failed for task ':compileQuerydsl'. + Mac

Spring boot Composite-id class does not override equals()

Spring boot 3, Hibernate ERROR Caused by: java.lang.ClassNotFoundException: Could not load requested class

Spring 3.0 Unable to resolve name

Java의 정석(3) - 연산자(operator)

Java의 정석(2) - 변수 variable

Java의 정석(1) - Java를 시작하기 전에

Spring Boot 3, Hibernate JPA Debug : Encountered deprecated setting [javax.persistence.sharedCache.mode], use [jakarta.persistence.sharedCache.mode] instead