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2.4.8. Cache

In order to optimize your database accesses, you can activate the so called second level cache of Hibernate. This cache is configurable on a per entity and per collection basis.

@org.hibernate.annotations.Cache defines the caching strategy and region of a given second level cache. This annotation can be applied on the root entity (not the sub entities), and on the collections.

@Entity
@Cache(usage = CacheConcurrencyStrategy.NONSTRICT_READ_WRITE)
public class Forest { ... }

    @OneToMany(cascade=CascadeType.ALL, fetch=FetchType.EAGER)
    @JoinColumn(name="CUST_ID")
    @Cache(usage = CacheConcurrencyStrategy.NONSTRICT_READ_WRITE)
    public SortedSet<Ticket> getTickets() {
        return tickets;
    }

@Cache(
    CacheConcurrencyStrategy usage();    
    String region() default "";          
    String include() default "all";      
)

	usage: the given cache concurrency strategy (NONE, READ_ONLY, NONSTRICT_READ_WRITE, READ_WRITE, TRANSACTIONAL)
	region (optional): the cache region (default to the fqcn of the class or the fq role name of the collection)
	`include` (optional): all to include all properties, non-lazy to only include non lazy properties (default all).