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Creating a matchmaker for your multiplayer game

Don't test in production. Test in simulation!

I'm Glenn Fiedler and welcome to Más Bandwidth, my new blog at the intersection of game network programming and scalable backend engineering. Because of this, my preferred approach is to calculate latency maps as greyscale image files per-datacenter in a batch process run daily over the last 30 days. Grey scale color [0,255] is latency in ms to the nearest datacenter You can see the full source code and dataset for the matchmaking simulator here.

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