Well, you could use something like CloudCache and not worry about allocation - it's elastic. There's a drop-in implementation for the ActiveSupport::Cache interface:
http://github.com/quetzall/cloud_cache/ Of course that's best used if you're on EC2 (or EngineYard on EC2). m On Thu, Nov 19, 2009 at 2:41 PM, Philip Hallstrom <phi...@pjkh.com> wrote: > > a) > > what is a reasonable memory usage for memcached? > > i read on some sites ~1gb while the default on my ubuntu server is > > only 64mb. i understand it's application dependent, but do you think > > that 128mb should be enough for most sites? > > It completely depends on your application. I've run sites that had 4 > servers with 1gb each, I've run sites that have 64mb... you need to > figure out how much data you need to store. Start with 64 and let it > run for a bit. Then connect to the memcache server and run 'stats' to > get some data on how it's doing. Scroll down till you see the stat > definition table... > http://github.com/memcached/memcached/blob/master/doc/protocol.txt > > > b) > > what about compression? it gives more cache hits, but is it > > performance costly? > > compression? Not sure what you mean. Memcached is very fast. Most > people use it because their db isn't fast enough or to lighten the > load... > > > > > c) > > i need a time based fragment expirations. i read about > > > http://agilewebdevelopment.com/plugins/memcache_fragments_with_time_expiry > > but it return me a "plugin not found" error. > > You shouldn't need a plugin to get going... add this to your > environment.rb (or one of the specific ones in environments) > > config.cache_store = :mem_cache_store, "localhost", {:namespace => > 'foobar'} > > Then in your views you can do things like: > > <% cache(:some_unique_key, :expires_in => 15.minutes) do %> > complicated html goes here... > <% end %> > > And all the other caching stuff as well... > > -philip > > -- > > You received this message because you are subscribed to the Google Groups > "Ruby on Rails: Talk" group. > To post to this group, send email to rubyonrails-t...@googlegroups.com. > To unsubscribe from this group, send email to > rubyonrails-talk+unsubscr...@googlegroups.com<rubyonrails-talk%2bunsubscr...@googlegroups.com> > . > For more options, visit this group at > http://groups.google.com/group/rubyonrails-talk?hl=. > > > -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-t...@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=.
