SpringBoot Redis Cache

> docker-compose up -d
> ./mvnw spring-boot:run

Issue - https://github.com/spring-projects/spring-boot/issues/27577

Invoke http://localhost:8080/api/bookmarks/1 twice and you will get the following error:

java.lang.ClassCastException: class java.util.LinkedHashMap cannot be cast to class com.example.rediscachedemo.BookmarkDTO (java.util.LinkedHashMap is in module java.base of loader 'bootstrap'; com.example.rediscachedemo.BookmarkDTO is in unnamed module of loader 'app')
	at com.example.rediscachedemo.BookmarkService$$EnhancerBySpringCGLIB$$d8594d86.getBookmarkById(<generated>) ~[classes/:na]
	at com.example.rediscachedemo.BookmarkController.getBookmarkById(BookmarkController.java:19) ~[classes/:na]

In CacheConfig.java if you use JdkSerializationRedisSerializer instead of GenericJackson2JsonRedisSerializer it is working fine.