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.
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