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This release will be the last release built against a version of Modeshape that uses Infinispan for data storage.
Performance and Scale
The Performance and Scale group has been testing various versions of Fedora, including the4.6.0 release candidates. Recent work has focused on running our JMeter test plans by multiple sites and testing the impact of using a relational database (MySQL or PostgreSQL) instead of LevelDB. The performance of the databases has been at least as good as LevelDB, and typically scales much better. In addition, testing has identified scalability issues with containers that link to a large number of other containers, and is working to address that issue. The current status of testing is tracked in the wiki: Performance and Scalability Test Plans.
Messaging Interface
As the draft Fedora Messaging (SPI) specification moves toward finalization, the message serialization format has been modified to track the recommendations outlined in this document. This will affect any existing message consumers. There are four significant changes that messaging applications should be aware of:
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Performance
One of Fedora's perennial goals is "improved performance". With this as a focus, a Performance and Scalability working group [10] has progressed in the creation of repeatable, scripted tests that exercise and meter basic read/write operations. The objective of these tests is to reveal application bottlenecks and to track changes in performance as the reference Fedora implementation evolvesThe Performance and Scale group has been testing various versions of Fedora, including the 4.6.0 release candidates. Recent work has focused on running our JMeter test plans by multiple sites and testing the impact of using a relational database (MySQL or PostgreSQL) instead of LevelDB. The performance of the databases has been at least as good as LevelDB, and typically scales much better. In addition, testing has identified scalability issues with containers that link to a large number of other containers, and is working to address that issue. The current status of testing is tracked in the wiki: Performance and Scalability Test Plans.
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