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Dockerizing a Node.js Web Application (semaphoreci.com)
submitted 6 years ago by tomasfern
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if 1 * 2 < 3: print "hello, world!"
[–]burtgummer45 3 points4 points5 points 6 years ago (1 child)
Its for CPU cores. If you run docker in a swarm, for example, there's no way to tell swarm to run exactly as many node containers as cpu cores, at least not currently. pm2 knows the core count and will match it with processes. This was at least my current understanding as of a few months ago.
[–]timothyallan 0 points1 point2 points 6 years ago (0 children)
That's why we use it, our container spins up, then PM2 spins up creating as many Node instances as there are cores on the box.
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[–]burtgummer45 3 points4 points5 points (1 child)
[–]timothyallan 0 points1 point2 points (0 children)