June 2018
Intermediate to advanced
408 pages
11h 23m
English
book
Hands-On High Performance with Spring 5
by Chintan Mehta, Subhash Shah, Pritesh Shah, Prashant Goswami, Dinesh Radadiya
Content preview from Hands-On High Performance with Spring 5
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Query cache
The query cache can be enabled by adding the following Hibernate property:
hibernate.cache.use_query_cache=true
Once the query cache is enabled, we can specify which query we want to cache, as follows:
Query query = entityManager.createQuery("SELECT a FROM Account a WHERE a.accountId=:accountId", Account.class);query.setParameter("accountId", 7L);query.setHint(QueryHints.HINT_CACHEABLE, true);Account account = (Account)query.getSingleResult();
If we execute the same query again which is cached by query cache, the following is the log printed with DEBUG mode:
2018-03-17 15:39:07 DEBUG StandardQueryCache:181 - Returning cached query results2018-03-17 15:39:07 DEBUG SQL:92 - select account0_.account_id as account_1_0_0_, account0_.name ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.