On Feb 1, 7:01 pm, Bill Caputo <logos...@gmail.com> wrote: > We are looking to add soft-reference based caching to one of our applications > and I was wondering if anyone could shed light on what the issues with > clache's implementation were (i.e. is a total loss, or would it potentially > be a good place for us to start, and so perhaps implement something that > could be submitted back).
I know nothing about core.cache's implementation, but I'd warn against relying on soft references for caching. I've seen out-of-memory exceptions due to this under heavy loads in one of our server applications. The promise of soft references is tempting: utilize spare memory yet allow it to be released when memory runs out. In practice some GC algorithms seem to have trouble working quickly enough and may keep soft references alive too long, allowing out-of-memory situations to occur -- despite promises to the contrary. You situation will of course be different but I'd suggest good stress testing with your chosen VM and GC if you do this. -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
