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If you use CushyTicketRegistry instead of Ehcache, then you have no choice. Either the Front End has to do the routing or you have to use CushyFrontEndFilter. However, the calculation that Ehcache does better with the Filter than it does on its own means that CushyTicketRegistry remains a viable choice even if you cannot get your network programmers to change your Front End. It simply means that you have to compare the two ticket registry solutions on their own merits without regard to where the Front End routing is done.