[ 源代码： ruby-wisper ]
软件包：ruby-wisper（2.0.1-2）
micro library providing objects with Publish-Subscribe capabilities
ruby-wisper can help you build message interchange between services or endpoints. Both synchronous (in-process) and asynchronous (out-of-process) subscriptions are supported. Connect objects based on context without permanence. It provides an alternative to ActiveRecord callbacks and Observers in Rails apps.