Kommentare zu: Understanding Caching in Hibernate – Part Two : The Query Cache http://blog.dynatrace.com/2009/02/16/understanding-caching-in-hibernate-part-two-the-query-cache/ Sat, 11 Feb 2012 09:39:39 +0000 hourly 1 http://wordpress.org/?v=3.1.3 Von: Understanding Caching in Hibernate « Java Magic http://blog.dynatrace.com/2009/02/16/understanding-caching-in-hibernate-part-two-the-query-cache/comment-page-1/#comment-60237 Understanding Caching in Hibernate « Java Magic Mon, 28 Nov 2011 13:07:23 +0000 http://blog.dynatrace.com/?p=366#comment-60237 [...] the last posts I already covered the session cache as well as the query cache. In this post I will focus on the second-level cache. The Hibernate Documentation provides a good [...] [...] the last posts I already covered the session cache as well as the query cache. In this post I will focus on the second-level cache. The Hibernate Documentation provides a good [...]

]]> Von: Top 10 Performance Problems « Microtime Computers http://blog.dynatrace.com/2009/02/16/understanding-caching-in-hibernate-part-two-the-query-cache/comment-page-1/#comment-59535 Top 10 Performance Problems « Microtime Computers Wed, 14 Sep 2011 14:57:22 +0000 http://blog.dynatrace.com/?p=366#comment-59535 [...] Reads: Understanding Hibernate Session Cache, Understanding the Query Cache, Understanding the Second Level [...] [...] Reads: Understanding Hibernate Session Cache, Understanding the Query Cache, Understanding the Second Level [...]

]]> Von: Alois Reitbauer http://blog.dynatrace.com/2009/02/16/understanding-caching-in-hibernate-part-two-the-query-cache/comment-page-1/#comment-28539 Alois Reitbauer Mon, 20 Dec 2010 19:14:00 +0000 http://blog.dynatrace.com/?p=366#comment-28539 Derlon, I state that you can use the query cache also without the second level cache. In many cases you will want to however use both, but you do not need to. EhCache is just one implementation of a cache provider to be used with Hibernate. In Hibernate - as I stated- EhCache is also used for the query cache. This however does not mean you use the second level. This depends on whether you set your Hibernate properties to enable the cache Derlon,

I state that you can use the query cache also without the second level cache. In many cases you will want to however use both, but you do not need to.

EhCache is just one implementation of a cache provider to be used with Hibernate. In Hibernate – as I stated- EhCache is also used for the query cache. This however does not mean you use the second level. This depends on whether you set your Hibernate properties to enable the cache

]]> Von: Derlon http://blog.dynatrace.com/2009/02/16/understanding-caching-in-hibernate-part-two-the-query-cache/comment-page-1/#comment-28538 Derlon Mon, 20 Dec 2010 18:47:35 +0000 http://blog.dynatrace.com/?p=366#comment-28538 @Alois tnx for the tip: use of dynaTrace. But, I couldn’t even silence myself for what I notice about your contraditory (paradoxal) statements: “…enable the second-level cache. As the basic working do not depend on it and I do not want to create the impression that the query cache requires the second level or vice versa.” and “as we can see the query cache internally uses the _EhCache_”. For instance, is there the dependence ehcache.jar and is it referenced in your ExampleApp config??! Finally, QueryCache really demands (or not) a 2ºlevel Cache Provider??! Derlon @Alois tnx for the tip: use of dynaTrace.
But, I couldn’t even silence myself for what I notice about your contraditory (paradoxal) statements: “…enable the second-level cache. As the basic working do not depend on it and I do not want to create the impression that the query cache requires the second level or vice versa.” and “as we can see the query cache internally uses the _EhCache_”.
For instance, is there the dependence ehcache.jar and is it referenced in your ExampleApp config??!
Finally, QueryCache really demands (or not) a 2ºlevel Cache Provider??!

Derlon

]]> Von: Derlon http://blog.dynatrace.com/2009/02/16/understanding-caching-in-hibernate-part-two-the-query-cache/comment-page-1/#comment-28537 Derlon Mon, 20 Dec 2010 18:46:50 +0000 http://blog.dynatrace.com/?p=366#comment-28537 @Alois tnx for the tip: use of dynaTrace. but, I couldn't even silence myself for what I notice about your contraditory (paradoxal) statements: "...enable the second-level cache. As the basic working do not depend on it and I do not want to create the impression that the query cache requires the second level or vice versa." and "as we can see the query cache internally uses the _EhCache_". For instance, is there the dependence ehcache.jar and is it referenced in your ExampleApp config??! Finally, QueryCache really demands (or not) a 2ºlevel Cache Provider??! Derlon @Alois tnx for the tip: use of dynaTrace.
but, I couldn’t even silence myself for what I notice about your contraditory (paradoxal) statements: “…enable the second-level cache. As the basic working do not depend on it and I do not want to create the impression that the query cache requires the second level or vice versa.” and “as we can see the query cache internally uses the _EhCache_”.
For instance, is there the dependence ehcache.jar and is it referenced in your ExampleApp config??!
Finally, QueryCache really demands (or not) a 2ºlevel Cache Provider??!

Derlon

]]> Von: Dan Moore! » Turning on hibernate query caching http://blog.dynatrace.com/2009/02/16/understanding-caching-in-hibernate-part-two-the-query-cache/comment-page-1/#comment-20520 Dan Moore! » Turning on hibernate query caching Fri, 24 Sep 2010 04:47:13 +0000 http://blog.dynatrace.com/?p=366#comment-20520 [...] http://blog.dynatrace.com/2009/02/16/understanding-caching-in-hibernate-part-two-the-query-cache/ [...] [...] http://blog.dynatrace.com/2009/02/16/understanding-caching-in-hibernate-part-two-the-query-cache/ [...]

]]> Von: Week 38 – Transactions in a JPA World Application Performance, Scalability and Architecture – The dynaTrace Blog http://blog.dynatrace.com/2009/02/16/understanding-caching-in-hibernate-part-two-the-query-cache/comment-page-1/#comment-19954 Week 38 – Transactions in a JPA World Application Performance, Scalability and Architecture – The dynaTrace Blog Tue, 14 Sep 2010 01:17:15 +0000 http://blog.dynatrace.com/?p=366#comment-19954 [...] Queries, however, are not cached by default. If you want to know more read this article on the Hibernate Query Cache. public void doubleLoad (){ EntityManager em = factory.createEntityManager(); [...] [...] Queries, however, are not cached by default. If you want to know more read this article on the Hibernate Query Cache. public void doubleLoad (){ EntityManager em = factory.createEntityManager(); [...]

]]> Von: Alois Reitbauer http://blog.dynatrace.com/2009/02/16/understanding-caching-in-hibernate-part-two-the-query-cache/comment-page-1/#comment-17013 Alois Reitbauer Wed, 07 Jul 2010 08:41:12 +0000 http://blog.dynatrace.com/?p=366#comment-17013 @Hema The traces show what has been executed. You can see this for your code by using tracing solutions like dynaTrace. @Hema
The traces show what has been executed. You can see this for your code by using tracing solutions like dynaTrace.

]]> Von: Alois Reitbauer http://blog.dynatrace.com/2009/02/16/understanding-caching-in-hibernate-part-two-the-query-cache/comment-page-1/#comment-17011 Alois Reitbauer Wed, 07 Jul 2010 07:25:42 +0000 http://blog.dynatrace.com/?p=366#comment-17011 @Bavani You have to explictly specify that a query gets cached so it will not be cached by default. Is this what you meant? @Bavani

You have to explictly specify that a query gets cached so it will not be cached by default. Is this what you meant?

]]> Von: Hema http://blog.dynatrace.com/2009/02/16/understanding-caching-in-hibernate-part-two-the-query-cache/comment-page-1/#comment-17009 Hema Wed, 07 Jul 2010 07:18:31 +0000 http://blog.dynatrace.com/?p=366#comment-17009 Thanks a lot for your clear explanation but where can i see this figure parts..How to see what has got executed?(blue highlighted parts I mean) Thanks a lot for your clear explanation but where can i see this figure parts..How to see what has got executed?(blue highlighted parts I mean)

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