anchor.diff:  
   === Standalone
   
  -The data set is held in the application node. 
  -If a standalone topology is used where there are multiple application nodes running the same application, then their caches are completely independent.
  +The data set is held in the application node.  If a standalone topology is used where there are multiple application nodes running the
  +same application, then their caches are completely independent.
   
   === Distributed / Clustered
   
   The data is held in a remote server (or array of servers) with a subset of hot data held in each application node.
   This topology offers offers a selection of consistency options.
   A distributed topology is the recommended approach in a clustered or scaled-out application environment.
  -It provides the best combination of performance, availability, and scalability.
  +It provides the best combination of performance, availability and scalability.
   
   image::ClusteredEhcacheTopology.png[]
   
  
positive.code: from the JVM's heap as it is stored and re-accessed.
  * Disk Store - Utilizes a disk (file system) to store cache entries.  This type of storage resource is typically very
  abundant but much slower than the RAM-based stores.
  * Clustered Store - This data store is a cache on a remote server. 
  The remote server may optionally have a failover server providing improved high availability. 
  Since clustered storage comes with performance penalties due to such
  factors as network latency as well as for establishing client/server consistency, this tier, by nature, is slower than
  local off-heap storage.
  
negative.code: [[storage-tiers]]
  == Storage Tiers
  
  You can configure Ehcache to use various data storage areas.
  When a cache is configured to use more than one storage area, those areas are arranged and managed as `tiers `.
  They are organized in a hierarchy, withthe lowest tier being called the `authority` tier and the others being part of the `caching` tier.
  The caching tier can itself be composed of more than one storage area.
  The_hottest_  data is kept in the caching tier, which is typically less abundantbut faster than the authority tier.
  All the datais kept in the authority tier, which isslower but more abundant.
  
  Data stores supported by Ehcache include:
  
  