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## Package org.jasig.portal.concurrency

Interface Summary
IEntityCache | Defines the api for a cache that caches `IBasicEntities` of a single type.
IEntityCachingService | Defines an api for a caching service that caches and retrieves `IBasicEntities`.
IEntityCachingServiceFactory | Factory interface for creating an `IEntityCachingService`.
IEntityLock | Defines a lock associated with an owner and a portal entity that guarantees some degree of exclusive access to the entity, depending on `lockType` and `expirationTime`.
IEntityLockService | Defines an api for acquiring lock objects, `IEntityLocks`, that can be used to control concurrent access to portal entities.
IEntityLockServiceFactory | Factory interface for creating an `IEntityLockService`.

Exception Summary
CachingException | A `CachingException` describes a problem that has arisen during an attempt to add, update, remove or reference a cache entry.
LockingException | A `LockingException` describes a problem that has arisen during an attempt to create or alter an `IEntityLock`.

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