Each Firebase cloud functions takes it own time to start the processing

Question

I am having this total of 7 firebase cloud functions deployed, I know something called cold start time which firebase takes before starts processing any request. It can be minimized by reducing the dependencies and having lazy initialization etc. I am trying everything possible to reduce the cold start time.

But now the problem I am facing is, each cloud function takes its own cold start time on its first invocation. Previously I thought that only the first invocation of first firebase function will take time to processing, but looks like it is not the case. Every function takes its own time.

Any idea on how to avoid the cold start for other functions also (except the first invocation) ? Like something can be done during deployment etc.

Thanks in Advance.

Answer 1

You could make a corn job that runs each 15 minutes to trigger the functions and keep them "warm", there are websites that offer free corn jobs.

if you are using triggers, the corn job should do actions that would activate the triggers

Answer 2

Due to the Cloud Functions being stateless, they're subject to what is known as a cold start. A cold start is just the execution environment being initialised from scratch.

Here you can find some tips and tricks on how to reduce cold starts, but unfortunately, they are unavoidable to a large extent, though they can be reduced if following best practices.