2022-04-22-TIL Today I Learned B-Tree Index https://12bme.tistory.com/138 B-tree and B+Tree https://en.wikipedia.org/wiki/B%2B_tree https://sdesigner.tistory.com/79 https://zorba91....

2022-04-21-TIL Today I Learned JPA Duplicated JPA 엔티티는 같은 이름으로 여러개 생성할 수 없다. https://programmingnote.tistory.com/88 Model Mapper baeldung.com/java-modelmapper Map Struct https://...

2022-04-20-TIL Today I Learned QueryDSL https://jojoldu.tistory.com/401 https://blog.leocat.kr/notes/2019/09/05/querydsl-sql-case-statement https://bottom-to-top.tistory.com/45 https://...

2022-04-18-TIL Today I Learned Memory Leak https://blog.wonizz.tk/2022/04/12/garbage-collector-2/ Architecture https://news.hada.io/weekly/202216?utm_source=slack&utm_medium=bot&amp...

2022-04-16-TIL Today I Learned Index https://jojoldu.tistory.com/243 B+Tree

2022-04-15-TIL Today I Learned Health Checks with Spring Boot https://reflectoring.io/spring-boot-health-check/ Apache Tomcat Access Log https://m.blog.naver.com/solinsystem/22179616735...

2022-04-13-TIL Today I Learned Content-Type in HTTP GET Reqeust https://stackoverflow.com/questions/5661596/do-i-need-a-content-type-header-for-http-get-requests HikariCP Maximum Pool Size ...

2022-04-12-TIL Today I Learned API 응답으로 code와 message를 보내는데 에러코드를 어떻게 분류할지에 대해서 팀원들과 논의하던 중에 그 필요성이나 실효성이 있는지 고민하게 되었다. 반대의 의견으로는 그냥 RuntimeException만 던지고 에러메시지만 적절히 적어두면 충분하며, 어차피 에러코드에 매핑되는 커스텀...

2022-04-11-TIL Today I Learned Redis Cluster and Sentinel https://velog.io/@always/Redis-%EC%9A%B4%EC%98%81-%EB%B0%A9%EC%8B%9D-Cluster-vs-Sentinel-%EC%96%B4%EB%96%A4-%EA%B2%83%EC%9D%84-%EC%84...

2022-04-09-TIL Today I Learned DB Lock https://sabarada.tistory.com/121 https://www.mysqltutorial.org/mysql-table-locking/ https://dev.mysql.com/doc/refman/5.7/en/locking-functions.html ...