Creating a SOA requires a centralized location to define all services within the SOA. Furthermore you want to know where to deploy those services.

Juggling background jobs with EventMachine and Beanstalkd

Peon is a work queue library for Ruby with an awesome DSL for defining jobs, and it's compatible with the beanstalkd message queue.

Queued RPC client and server. Works as normal RPC server, but through queue interface, so allows highly scalable, distributed and asynchronous remote API implementation and fast data processing. It's based on EventMachine and typically on Beanstalk, so it's fast and thread safe.

Queueing proxy backed by EM/Beanstalk for a very weird purpose.