On May 9, 2008, at 9:52, John Kramlich wrote:
Is anyone using the variant of memcached v 1.2.4 that supports tagging found at the following URLhttp://code.google.com/p/memcached-tag/ ? I am in the planning stages of major feature additions to my web application and would really like to use this version. I'm looking for feedback from others who have used it. Is it stable enough for production use? Any issues?
I think tagging is a generally useful feature, but we honestly haven't put a lot of effort into reviewing the tag code.
In particular, we want tagging to be cheap on both setting and invalidating. If either operation has to perform more than a single lookup, then it may not be desirable. In particular, deleting by tag is a loop (within a lock and with another nested loop within it), which may cause the server to hang for long periods of time when invalidating a widely-used tag. It *should* be possible to do this without such a loop.
-- Dustin Sallings
