To add simple response cacheing to a Spring Boot application.

1. Add the guava dependency.

       <dependency>
         <groupId>com.google.guava</groupId>
         <artifactId>guava</artifactId>
         <version>18.0</version>
       </dependency>
   

2. Configure the cache

   Annotate the config class

   import org.springframework.cache.annotation.EnableCaching;
   
   @EnableCaching
   

   Configure the bean

     /**
      * Response cache.
      */
     @Bean
     public CacheManager guavaCacheManager() {
       GuavaCacheManager guavaCacheManager = new GuavaCacheManager();
       guavaCacheManager.setCacheBuilder(CacheBuilder.newBuilder().expireAfterWrite(
           Long.parseLong(env.getProperty("request.cache.timeout", "600")), TimeUnit.SECONDS));
       return guavaCacheManager;
     }
   
   

3. Annotate cacheable controller methods

   import org.springframework.cache.annotation.Cacheable;
   @Cacheable("mycache")