Locker

A quote from https://github.com/wooga/locker:

locker is a distributed de-centralized consistent in-memory key-value store written in Erlang. An entry expires after a certain amount of time, unless the lease is extended. This makes it a good practical option for locks, mutexes and leader election in a distributed system.

Lockeris a Elixir wrapper for the locker Erlang library that provides some useful libraries that should make using locker a bit easier.

The Locker module implements an OTP application that runs locker. In addition to that is also provides a wrapper for the locker API, just for convenience.

Idea of Locker is to provide an abstration for globally registering GenServer or :gen_fsm processes to :locker key-value store in a cluster of Erlang servers. These are implemented in Locker.Server and Locker.Fsm modules. In the simplest case, all you have to do is replace use GenServer with use Locker.Server and your process is automatically registered to global :locker cluster.