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Apache Commons JCS
Version 2.1
Release Notes
This document contains the release notes for the 2.1 version of Apache Commons JCS.
Commons JCS is a distributed caching system written in Java. It is intend to speed up
applications by providing a means to manage cached data of various dynamic natures.
JCS 2.0 and onwards now targets Java 6.0, making use of features that arrived with Java 5.0
such as generics and concurrency.
For the advice on upgrading from 1.x to 2.x, see the following page:
Apache Commons JCS is a distributed, versatile caching system.
This is mainly a bugfix release.
Changes in this version include:
Fixed Bugs:
o SoftReference cache did not work because of strong references being
stored in payload of DoubleLinkedListNode
o JCS-172: ElementAttributes.clone() not updating createTime causes cache elements
to expire immediately Thanks to Tom Schroeder.
o JCS-171: Multiple CacheEventQueue.QProcessor spawned for the same cache region Thanks to Wiktor Niesiobedzki.
o JCS-170: Replace at least commas for jmx registration
Historical list of changes:
For complete information on Apache Commons JCS, including instructions on how to submit bug reports,
patches, or suggestions for improvement, see the Apache Commons JCS website: