second-level-cache

Related to this question Premise: These are my assumptions, based on my reading, experience and understanding, they may be wrong, if they are, please comment and I'll edit the question. Query cache is good mostly along with 2nd level cache Query cache caches the identifiers results of queries + parameters Query cache is risky if the database was changed, and it wasn't reflected to the cache Question: I have an object that is not in the 2nd level cache. Due to some bad programming or other constraints, the code that loads the object is being called several time in the same hibernate session.

I wish to clear the entire second level cache in NHibernate via code. Is there a way to do this which is independent of the cache provider being used? (we have customers using both memcache and syscache within the same application). We wish to clear the entire cache because of changes external to the database may have occurred (and we have no guarantees re: which tables/entities were affected, so we have to assume the worst). This should do: sessionFactory.EvictQueries(); foreach (var collectionMetadata in sessionFactory.GetAllCollectionMetadata()) sessionFactory.EvictCollection

What is second level cache in hibernate ? Hibernate comes with three different caches: first level, second level and query cache. The first level cache is the Hibernate Session and is used to track the state of entities during the current Session (or unit of work). This is a transaction-level cache. The second level cache shares entity state across various Session. This is a SessionFactory-level cache. The query cache is used to cache queries (and their parameters) and their results. Recommended readings The Second Level Cache in the documentation Hibernate: Truly Understanding the Second

I got trunk version of NH and FNH. When i try to add 2nd level cache, some parts of NHibernate forgets about chosen sqldialect. Initial configuration: var cfg = Fluently.Configure() .Database(MsSqlConfiguration.MsSql2008 .ConnectionString(connectionString) .DefaultSchema("dbo") .UseReflectionOptimizer() .Mappings(m => ................); Guilty custom query: var sql = @"with Foo(col1,col2,col3) as (select bla bla bla...) Select bla bla bla from Foo"; list = Session.CreateSQLQuery(sql) .AddEntity("fizz", typeof(Fizz)) .SomethingUnimportant(); When i change configuration to: var cfg = Fluently

I have some questions on "overflowToDisk" attribute of element? 1) I read at this URL that : overflowToDisk sets whether element can overflow to disk when the memory store has reached the maximum limit. "Memory" above refers JVM memory allocated for Java process running EHCACHE, or is there any parameter in to specify Cache memory size? 2) When the poces running EHCACHE terminates for some reason, whether this disk gets cleared and everything in cache gets vanished? Elements start to overflow to the disk when you have more than maxElementsInMemory of them in the memory store. The following

How do I decide which CacheConcurrencyStrategy to use? NonstrictReadWriteCache , ReadOnlyCache , ReadWriteCache , TransactionalCache . I read https://www.hibernate.org/hib_docs/v3/api/org/hibernate/cache/CacheConcurrencyStrategy.html , but doesn't explain in detail enough. The Hibernate documentation does a pretty good job at defining them: 19.2.2. Strategy: read only If your application needs to read, but not modify, instances of a persistent class, a read-only cache can be used. This is the simplest and optimal performing strategy. It is even safe for use in a cluster. 19.2.3. Strategy: read

I found some instructions how to configure pure hibernate to use EHCache. But I can't find any instructions how to configure JPA2.0 EntityManager to use cache. Hibernate 3.5.2 is my JPA2.0 provider. edit// Is @Cacheable(true) enough for entity? Or should I use @org.hibernate.annotations.Cache to configure the entity? Pascal Thivent I found some instructions how to configure pure hibernate to use EHCache. But I can't find any instructions how to configure JPA2.0 EntityManager to use cache. Hibernate 3.5.2 is my JPA2.0 provider. The way you configure the L2 cache provider with JPA is similar is

I'm using Spring Boot 1.2.5 with JPA2 to annotate entities (and hibernate as underlaying JPA implementation). I wanted to use second level cache in that setup, so entities were annotated with @javax.persistence.Cacheable I also added following in application.properties: spring.jpa.properties.hibernate.cache.use_second_level_cache=true spring.jpa.properties.hibernate.cache.use_query_cache=true spring.jpa.properties.hibernate.cache.region.factory_class=org.hibernate.cache.ehcache.EhCacheRegionFactory During bootup hibernate complained about lack of EhCacheRegionFactory so I also added this to