rails sessions in memcached.

Memcache doesn't work like that, items don't expire or get deleted to
make room for new items. Memcache can expire items according to how
you configure it, or not expire items at all. I haven't looked at any
of the memcache session stores for ruby, but in most cases memcache is
used with some sort of permanent backing storage, because memcache
just uses memory and if you stop memcached you lose everything in the
cache.

Chris

You manage it the same way you do any other store. If your filesystem
runs out of space when using database/file storage it's no different
then if memcached runs out of memory.

Chris