Comment by carefulfungi

My foray into otel with aws lambda was not a success (about 6 months ago). Many of my issues were with the prom remote writer that I had to use. The extension was not reliable. Queue errors were common in the remote writer. Interop with Prometheus labels was bad. And the various config around delta and non-delta metrics was a bit of a mess. The stack I was using at least didn’t support exponential histograms. Got it to work mostly after days of fiddling but never reliably. Ripped it out and was happier. Maybe a pure OTEL stack would have been a much better experience than needing the prom remote writer - which I’d like to try in the future.

I’d certainly appreciate hearing success stories of OTEL + serverless.