28 Mar '14, 7pm

Redis Pub/Sub... How Does it Work?:

Redis is a key/value store , but it's jam-packed with a ton of other little utilities that make it a joy to explore and implement. Two of these are the PUBLISH and SUBSCRIBE commands, which enable you to do quick messaging and communication between processes. Granted, there's plenty of other messaging systems out there (AMQP and ØMQ come to mind), but Redis is worth a look too. The way it works is simple: SUBSCRIBE will listen to a channel PUBLISH allows you to push a message into a channel Those two commands are all you need to build a messaging system with Redis. But, what should you build? Demo I tend to build quick little games to learn new ideas, frameworks, languages, etc. For Redis pub/sub I chose to emulate IRC, since "channels" are essentially the same concept for an IRC server. A user connects, talks into a channel, and if others are there, they get the message. ...

Full article: http://robots.thoughtbot.com/redis-pub-sub-how-does-it-work

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