Community member Alf Høgemark recently discovered a bug where one of our most important caches was never clustered and was using default cache configurations. This will impact consistency mostly in a clustered environment (no cache invalidations across nodes).
This bug affects version of Liferay since revision 17559, which is after 5.0.1, but before 5.1 branch was cut (It was fixed in trunk at revision 20391).
Since this is a matter of a mis-configuration, the solution is easily applied. Please verify any projects (especially clustered ones) using a recent cut of Liferay between rev 17559 and rev 20391 make the very small change necessary to resolve this issue.
See:
http://support.liferay.com/browse/LEP-7490 and
http://lportal.svn.sourceforge.net/lportal/?rev=20391&view=revNote: The specified files are within the portal-impl.jar at [tt]ehcache/liferay-multi-vm*.xml[tt] which is located within the [tt]WEB-INF/lib[/tt] folder of your portal installation. Simply copy the files from within the jar to [tt]WEB-INF/classes/ehcache/liferay-multi-vm*.xml[/tt] and apply the change.
Thanks Alf.
