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DISTRIBUTED SYSTEMS WITH PUB/SUB or how micro services can rock your socks
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It’s actually quite simple You have two processes You send a message from one to the other Surprise! Distributed system.
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Why would I bother?! Separation of concerns. More robust in the face of nodes failing. Easier to bring up and take down nodes.
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Ok but what are WE doing? We have an IRC bot. It listens to and writes to a couple Pub/Sub channels. This lets us do our logic in other processes.
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The real fun. They don’t have to be on the same server.