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Chapter 2. Cache Managers
A Cache Manager is the primary mechanism to retrieve a cache instance in Red Hat JBoss Data Grid, and is a starting point for using the cache.
In JBoss Data Grid, a cache manager is useful because:
- it creates multiple cache instances on demand using a provided standard.
- it retrieves existing cache instances (i.e. caches that have already been created).
2.1. Types of Cache Managers
Red Hat JBoss Data Grid offers the following Cache Managers:
EmbeddedCacheManager
is a cache manager that runs within the Java Virtual Machine (JVM) used by the client. Currently, JBoss Data Grid offers only theDefaultCacheManager
implementation of theEmbeddedCacheManager
interface.RemoteCacheManager
is used to access remote caches. When started, theRemoteCacheManager
instantiates connections to the Hot Rod server (or multiple Hot Rod servers). It then manages the persistentTCP
connections while it runs. As a result,RemoteCacheManager
is resource-intensive. The recommended approach is to have a singleRemoteCacheManager
instance for each Java Virtual Machine (JVM).