BranchCache

2013
Optimize Performance
http://technet.microsoft.com/en-us/library/jj721440.aspx
How to Make SharePoint Fast over Slow Networks
http://blogs.technet.com/b/chad/archive/2010/03/19/tip-33_3a00_-branch-cache-and-sharepoint-2010_2c00_-or-how-to-make-sharepoint-fast-over-slow-networks.aspx

2010 and Before …

Does SharePoint 2010 support BranchCache? yes read more
http://blogs.msdn.com/b/michaelp/archive/2010/06/12/does-sharepoint-2010-support-branchcache.aspx

Issues?

http://social.technet.microsoft.com/Forums/en-US/sharepointadminprevious/thread/18fb5114-196d-4d21-a3f9-2f735c481dfb/