javax.persistence

注释类型 Cacheable

@Target(value=TYPE)
 @Retention(value=RUNTIME)
public @interface Cacheable

Specifies whether an entity should be cached if caching is enabled when the value of the persistence.xml caching element is ENABLE_SELECTIVE or DISABLE_SELECTIVE. The value of the Cacheable annotation is inherited by subclasses; it can be overridden by specifying Cacheable on a subclass.

Cacheable(false) means that the entity and its state must not be cached by the provider.

从以下版本开始:

Java Persistence 2.0

可选元素概要

可选元素

限定符和类型	可选元素和说明
int	interval (Optional) 定时自动更新缓存的周期秒数，为0表示不做定时更新， 大于0表示每经过interval秒后会自动从数据库中拉取数据更新Cache
boolean	value (Optional) Whether or not the entity should be cached.

元素详细资料

value

public abstract boolean value

(Optional) Whether or not the entity should be cached.

返回:

boolean

默认值:

true

interval

public abstract int interval

(Optional) 定时自动更新缓存的周期秒数，为0表示不做定时更新， 大于0表示每经过interval秒后会自动从数据库中拉取数据更新Cache

返回:

int

默认值:

0