Metrics gauge for number of active HTTP requests

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
35/100
Issue type
Feature
Clarity
Mostly clear
Activity status
Stale
Tech stack
rust
Domain
observability

Research direction

Start with the OpenTelemetry HTTP metrics semantic conventions linked in the issue, then locate the HTTP server instrumentation and existing metric definitions in the repository. Confirm the intended in-flight request lifecycle and add a gauge whose value reflects active HTTP requests, with verification that the reported metric matches the convention.

Written by the indexing model from the issue text.

Description

It would be good to have a gauge showing how many HTTP requests are in flight. For inspiration, here's the semantic conventions spec recommended metric: https://opentelemetry.io/docs/specs/semconv/http/http-metrics/#metric-httpserveractive_requests

Dominant language
Rust
Stars
70
Forks
16
Avg merge
4h 36m
Merged PRs (30d)
30

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

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