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AWS's firecracker can start a VM for your code in under 15ms, but if you need database access and other stuff, you can 'pre-warm' it.

Thanks, that's impressive.

It depends on the size of the container, but it can be a few seconds for a cold boot if small, then instantly for requests soon after that.

Unfortunately Cloud Run obfuscates when a cold boot is necessary.

Don't have an exact time, but the bulk of the time is app startup vs container scheduling