The embedding API allows you to start Rapns within an existing process. Calling Rapns.embed will start Rapns in a thread. Rapns will attach an at_exit hook to perform a graceful shutdown. If you need to manually shutdown Rapns you can call Rapns.shutdown.

The embedding API also provides Rapns.sync for synchronizing apps (aka Hot App Updates).

Please note that only a single instance of Rapns should ever be running per Rails environment. If you deploy multiple instances of your application and intend to start Rapns within one of those instances, you will need to ensure only a single instance spawns Rapns.