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Tip: How to Cache Query Results

Learn how to cache query results via the eclipselink.cache-usage hint.


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If em is the EntityManager, then the following query results will be cached:

Query query = em
   .createQuery("SELECT u FROM User u");       
query.setHint("eclipselink.cache-usage", "CheckCacheThenDatabase"); 

 

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Octavia Andreea Anghel is a senior PHP developer currently working as a primary trainer for programming teams that participate at national and international software-development contests. She consults on developing educational projects at a national level. She is a coauthor of the book "XML Technologies--XML in Java" (Albastra, ISBN 978-973-650-210-1), for which she wrote the XML portions. In addition to PHP and XML, she's interested in software architecture, web services, UML, and high-performance unit tests.
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