About cache

manual

DELETE Queries in JPA/JPQL

Explains how to apply server side bulk delete using a JPA/JPQL query. As explained in chapter 2 , entity objects can be deleted from the database by: Retrieving the entity objects into an EntityManager . Removing these objects from the EntityManager  within an active ...

 
api-jpa

JPA Annotations for Classes

Reference (JavaDoc) of JPA 2 class annotations, including @Entity, @Embeddable, @IdClass, @Cacheable, @EntityListeners, etc.... can be further configured by annotations that specify cache preferences and lifecycle event listener policy (as explained in ...

 
forum_thread

Replaying recorded requests...

Hi, I get the following when ODB starts in embedded mode: Replaying recorded requests... then I get something like 500 lines of recordset information. Here is the relevant part of the config file: Questions: 1) Why am I seeing this if I've set recording enabled to false? 2) I... mode = "write" /> <processing cache = "64mb" max-threads = "10" /> <query-cache results = "32mb" programs = "500" /> </database ...

 
issue

Terracotta Ehcache Integration

Hello , it will be good if you make alliance with terra-cotta ehcache. Their distributed memory cache is very fast.IF we mix with your engine. It will be very great for us. ... with terra-cotta ehcache. Their distributed memory cache is very fast.IF we mix with your engine. It will be very great for ...

 
api-jpa

Cacheable.value

(Optional) Whether or not the entity should be cached.(Annotation Element of javax.persistence.Cacheable)

 
api-jdo

evictAll(oids)

Evict the parameter instances from the second-level cache.(Method of javax.jdo.datastore.DataStoreCache)

 
api-jdo

makeTransactional(pc)

Make an instance subject to transactional boundaries.(Method of javax.jdo.PersistenceManager)

 
api-jdo

pinAll(subclasses, pcClass)

Pin instances in the second-level cache.(Method of javax.jdo.datastore.DataStoreCache)

 
forum_thread

Refresh data in application after database data has changed

Hi, I have a Java program that can manage and create some Person objects. When I start my application and I want to add a person with the same national number as a person already in the database, my program has to block the creation. ... a new Person object, he first refreshes his internal "cache" or internal "objects"? ...

 
forum_thread

Many connections possible? and will it makes problem in future?

Hello , we are currently making new instant messenger but we were planing to use some security addons and privileges on access some of the fields on java side.   My questions is about : 1-) Can objectdb server handle 200.000+ connections at the same time concurrently ? Does it have queue and cache ? 2-) Can we give privileges to users , for example some users can only read some fields and some just can write java fields. Some users only allowed insert ability. ... at the same time concurrently ? Does it have queue and cache ? 2-) is it dangerous to use that system on many online users ? ...