Spring Boot Cache
In the save() method, We have added @CachePut annotation for updating or adding the particular entity in the cache, and @CacheEvict is used because If we have created a cache for users list then if the user is updated or deleted then we are going to evict or flush the cache with the given value to makes sure that it should also update in Redis Cache.
In the findById() method, we have used @Cacheable annotation with key as id and value as get/user/. So that when this method is called, a record of the user with id will be stored in Redis cache.
Dependencies
<dependency>
<groupId>org.springframework.session</groupId>
<artifactId>spring-session-core</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.session</groupId>
<artifactId>spring-session-data-redis</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-cache</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>
spring.cache.redis.cache-null-values: false
spring.cache.redis.time-to-live: 600000
spring.redis.host: 127.0.0.1
spring.redis.port: 6379