This is a pure extraction from Nick Kallen's cache-money.
sudo gem install memcache-lock -s http://gemcutter.org
(Note: If you already have the gemcutter gem installed, you can omit the -s part)
Instantiate the lock somewhere, like in an initializer if you're using rails. It needs a MemCache instance.
$cache = MemCache.new(YAML.load(File.read("/path/to/memcache/config"))) $lock = MemcacheLock.new($cache)
Then, wherever you'd like to lock a key, use it like this:
$lock.synchronize("some-memcache-key") do # stuff that needs synchronization in here end
For more info, see lib/memcache-lock.rb. It's very straightforward to read.
Fork the project.
Make your feature addition or bug fix.
Add tests for it. This is important so I don't break it in a future version unintentionally.
Commit, do not mess with rakefile, version, or history. (if you want to have your own version, that is fine but
bump version in a commit by itself I can ignore when I pull)
Send me a pull request. Bonus points for topic branches.