anchor.diff:  inside the cache manager.
   
   The example below demonstrates a configuration example that contains a pre-configured cache with an `cache-ref` element
  -(which might be a local cache), a `cache` with an explicit address (that is probably hosted outside ElastiCache) and
  -a `cache-cluster` configuration.
  +(which might be a local cache) and a `cache-cluster` configuration for Elasticache cache clusters.
   
   [source,xml,indent=0]
   ----
   <beans ...>
   	<aws-cache:cache-manager id="cacheManager">
   		<aws-cache:cache-ref ref="memcached" />
  -		<aws-cache:cache address="someLocalServer:4321" name="memc" />
   		<aws-cache:cache-cluster name="SimpleCache"/>
   	</aws-cache:cache-manager>
   </beans>
  
positive.code: === Configuring caching using Java configuration
  Spring Cloud AWS also support the cache configuration with Java configuration classes. On any `Configuration` class,
  the caching can be configured using the `org.springframework.cloud.aws.cache.config.annotation.EnableElastiCache`
  annotation provided by Spring Cloud AWS. The next example shows a configuration of two cache clusters using the `lusters`
  attribute.
  
  [source,java,indent=0]
  ----
  
  @EnableElastiCache(clusters = {"firstCache", "secondCache"})
  public class ApplicationConfiguration {
  }
  ----
  
  IMPORTANT: If you leave the `clusters` attribute empty, then all the caches inside your CloudFormation stack (if available)
  will be configured automatically.
  
  === Configuring caching in Spring Boot
  The caches will automatically be configured in Spring Boot without any explicit configuration property.
  
negative.code: to support an expiry time. The Spring Cloud AWS cache configuration supports the expiry time setting per cache. The
  expiry time will be passed to the memcached service.
  
  The `cache-cluster` element accepts an expiration attribute that defines the expiration time in seconds.
  No configured values implies that there is an infinite expiration time.
  
  [source,xml,indent=0]
  ----
  <beans>
  	<aws-cache:cache-manager>
  		<aws-cache:cache-cluster expiration="10000" name="CacheCluster" />
  	</aws-cache:cache-manager>
  </beans>
  