By Shamoil Khan
I’m deploying a Node.js app on App Platform, and Node.js normally utilises only one CPU core. I want to know if I need to use cluster in my code, or use pm2 to utilise all CPU cores, or DO App Platform automatically handles it? If I had to do it myself, which approach should be recommended?
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Hi there,
I think that a standard Node.js server won’t automatically use all cores because Node.js is single-threaded by default, and I would guess that App Platform doesn’t handle clustering automatically.
I think that the App Platform would give your container access to the full 2 vCPUs, but to use both you’ll need to implement multi-core handling in your code with Node’s built-in cluster or worker_threads modules.
PM2 might work in some cases using pm2-runtime, but there are some limitations around pm2 monitoring listed here:
https://docs.digitalocean.com/products/app-platform/details/limits/
So it might be best to use clustering in your code or scale horizontally with multiple App Platform instances instead.
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