Serverless function Start Type in logs - to identify cold starts

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1

I noticed that under Observability > Serverless Functions > Advanced Metrics, there’s a new Start Type metric, which is a great addition!

Is it possible to view the Start Type for each individual request in the Logs? Additionally, would it be possible to filter logs by Start Type?

Or if there is any workaround I could use to detect if a specific request was cold-started, that would be useful.

This would be incredibly useful for identifying which requests experienced a cold start and understanding the latency impact.

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2

Hi @rychlis, welcome to the Vercel Community!

Glad that you liked the new Start type metric. Thanks for your detailed input. I agree, it can be useful for understanding function invocations better.

Let me take this feedback to our product team.

Looking forward to seeing you more here. :handshake:

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Thanks! Even any workaround to detect these would help as well.

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