A few years back, I was consulting for a client who had a Node-based instant messaging feature which had worked pretty well at first. But the number of users grew, and then it didn't. Even though they had a number of load-balanced server instances running, they found that the Redis database they were using to track connected users was a big bottleneck. No matter how many instances they ran, they all had to talk to that database.


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javascript,web dev,node.js,websocket,mesh network