After AppFabric and SharePoint are installed on the server, AppFabric will continue to be updated independently from SharePoint. SharePoint Updates do not update the AppFabric software running on the SharePoint 2013 server.
For example, the .Net Framework 4.5 update introduces background GC (Garbage Collection) for Servers. To allow AppFabric to take advantage of background GC, it requires AppFabric cumulative update 3 (http://support.microsoft.com/kb/2787717)
be applied and the steps given in the update article to be completed (enables background GC in the DistributedCacheService.exe.config configuration file).