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I am doing to a proof of concept using ehcache as the cache provider.
Read somewhere saying we need terracotta server running, ALONG WITH ehcache to provide clustering.
Does ehcache alone provide clustering service or we need terracotta also?
Thanks, Venkat
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The Ehcache Clustered Tier Manager is the server-side component that gives clustering capabilities to a cache manager. Cache managers connect to these to get access to the server's storage resources so that the clustered tiers of caches defined in them can consume those resources.
The cache acts as a local copy of data retrieved from or stored to the system-of-record. This is often a traditional database, although it may be a specialized file system or some other reliable long-term storage. For the purposes of using Ehcache, the SOR is assumed to be a database.
Ehcache is an open source, standards-based cache that boosts performance, offloads your database, and simplifies scalability. It's the most widely-used Java-based cache because it's robust, proven, full-featured, and integrates with other popular libraries and frameworks.
A cache cluster, also known as OracleAS Cluster (Web Cache), is a loosely coupled collection of cooperating Web cache instances working together to provide a single logical cache.
If you don't require clustering, but replication would suffice, ehcache comes with RMI replication bundled and has jgroups as well as JMS replication available:
see http://www.ehcache.org/documentation/2.7/get-started/cache-topologies.html#replicated-caching
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EhCache is not a distributed solution. So you need to use it with Terracotta to obtain the result you want. Like moodywoody said, you can use Hazelcast, but also Infinispan to obtain this result:
http://www.jboss.org/infinispan
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