I'm looking for a daemon that I can install on my Debian server, and can be controlled through PHP (preferably with included libraries). It must have a basic key-value cache, BUT it must never ever delete any entry in the cache until I tell it to do so. Is there anything like this?
I suppose Redis should fit the requirements. It's packaged in Debian and has several PHP client libraries of which one appears to be packaged, though only in Sid at the moment (but I suppose it should be trivial to backport).