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The Publish-Subscribe Pattern on Rails: An Implementation Tutorial

by Ahmed AbdelHalim

The publish-subscribe pattern] (or pub/sub, for short) is a messaging pattern where senders of messages (publishers), do not program the messages to be sent directly to specific receivers (subscribers). Instead, the programmer "publishes" messages (events), without any knowledge of any subscribers there may be. This article provides insight in how to use the pub/sub pattern, in Rails, to communicate messages between different system components without these components knowing anything about each other's identity.

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