Ask HN: How do serverless/cloud functions work underneath?

[quantumOctopus]

I've been curious about this for a while, anyone willing to shed some light even at a higher level!

[j4hdufd8]

I speculate it's just containers, repurposed solely for the purposes of serving HTTP APIs.

When you "deploy" a cloud function I think it means it rebuilds the container image and replaces the running instance of the container.

I imagine that e.g. the usual 60s "timeout" of a cloud function just means they kill the container after 60s?

And maybe e.g. Firestore triggers means that Firestore maintains event handlers that spawn a container (your "trigger") to run the code you want for that event?

[techn00]

You can also check out how https://www.openfaas.com/ works.

[fggdd]

Is Google broken for you?

[quantumOctopus]

Where I'm from, yes. Thanks for making privileged assumptions.