spring-boot cache with redis

- 설정
https://pamyferret.tistory.com/m/25

https://www.skyer9.pe.kr/wordpress/?p=1571

-객체 cache
https://ckddn9496.tistory.com/m/109

https://kim-oriental.tistory.com/m/28

- Entity 별로 TTL 지정하기
https://www.skyer9.pe.kr/wordpress/?p=1571

- cache key prefix
https://stackoverflow.com/questions/56764225/how-can-i-prefix-cachenames-with-spring-cache-redis-key-prefix

- custom key generator
custom key generator 사용시 Cacheabke annotation의 attribute 사용시 key와 keyGenerator  둘 중 하나만 사용 가능 하다
https://www.baeldung.com/spring-cache-custom-keygenerator

- key toUpperCase
https://stackoverflow.com/questions/41484900/how-to-avoid-case-sensitive-keys-in-spring-cache

- null cache 안하기
https://findmypiece.tistory.com/m/105

- annotation 설명
https://mangkyu.tistory.com/179

https://gngsn.tistory.com/157

- method별 TTL설정 (@scheduled 사용)
https://www.baeldung.com/spring-setting-ttl-value-cache