[▲ Vercel Community](/) · [Categories](/categories) · [Latest](/latest) · [Top](/top) · [Live](/live)

[Feedback](/c/feedback/8)

# Serverless function Start Type in logs - to identify cold starts

125 views · 2 likes · 3 posts


rychlis (@rychlis) · 2025-01-27 · ♥ 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.


Anshuman Bhardwaj (@anshumanb) · 2025-01-28

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:


rychlis (@rychlis) · 2025-02-03 · ♥ 1

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