EHCACHE 2.5 DOCUMENTATION PDF
The Ehcache documentation focuses on XML declarative configuration. Programmatic Memory-Based Cache Sizing (Ehcache and higher). Initially . Ehcache and higher does not allow multiple CacheManagers with the same See the Ehcache API documentation for more information on these methods. Documentation Ehcache is an open source, standards-based cache that boosts performance, This version of Ehcache increases on-heap performance.
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A cache has a name and attributes. If a CacheManager is part of a cluster, there will also be listener ports which must be unique.
All caches implement the Ehcache interface. The maximum number of seconds an element can exist in the cache regardless of use. Caches are physically implemented, either in-memory or on disk. If that is the case, you can throw an UnsupportedOperationException in the removeAll method.
The element expires at this limit and will no longer be returned from the cache. If an attempt is made to persist or replicate them they are discarded without error and with a DEBUG level log message.
However, since Ehcache 2. Optionally they also overflow to a DiskStore. If Ehcache does not find that file, Ehcache looks for ehcache-failsafe. In the current version of Ehcache, this includes the following:. Caches can be configured in Ehcache either declaratively in XML, or by creating caches programmatically and specifying their parameters in the constructor.
While a defaultCache configuration is not required, an error is generated if caches are created by name programmatically with no defaultCache loaded. To disable the check, do one of the shcache.
This enables multiple CacheManagers to be created and used concurrently. Ehcache configuration files must comply with the Ehcache XML schema, ehcache. This example dlcumentation how to dynamically modify the cache configuration of a running cache:.
Grails Plugin: Ehcache Cache Plugin
If the Caches under management use only the MemoryStore, there are no special considerations. This is provided for ease of migration. Caches contain Elements, which are essentially name value pairs.
If there are, a CacheException is thrown.
Two new dhcache on Element: Setting this system property to true using java -Dnet. This philosophy is one of the fundamentals behind Play, and is different from Java EE, where the session is expected to retain values throughout its lifetime.
The API is intentionally minimal to allow several implementation to be plugged in. The Ehcache documentation focuses on XML declarative configuration. The logical representations of these components are actualized mostly ehcachee the classes discussed below. When a cache starts up, the stores are always empty. The source code for this page can be found here. Replicated caches provide a bootstrap mechanism that populates them.
When LRU is selected as the eviction policy, set this system property to true using java -Dnet. If you are using compile-time DI, mix EhCacheComponents into your components cake to get access to the defaultCacheApi and the cacheApi method for getting a cache by name. Socumentation get the full Ehcache implementation, add ehcache to your dependencies list:.
Caching data is a typical optimization in modern applications, and so Play provides a global cache. If you still need access to the Ehcache implementation classes, you can use ehcache and disable the module from automatically binding it in application. Dovumentation disabled, no elements can be added to a cache puts are silently discarded.
Elements are put into and removed from caches. Is that what you’re looking for? Pinning of caches or specific elements is discussed in Pinning, Expiration, and Eviction. It contains comments to help you configure each element.
This will also automatically set up ehcach bindings for runtime DI so the components are injectable.