open-nomad/.changelog/13621.txt

```release-note:improvement
api: HTTP server now returns a 429 error code when hitting the connection limit
```
Return 429 response on HTTP max connection limit (#13621) Return 429 response on HTTP max connection limit. Instead of silently closing the connection, return a `429 Too Many Requests` HTTP response with a helpful error message to aid debugging when the connection limit is unintentionally reached. Set a 10-millisecond write timeout and rate limiter for connection-limit 429 response to prevent writing the HTTP response from consuming too many server resources. Add `nomad.agent.http.exceeded metric` counting the number of HTTP connections exceeding concurrency limit. 2022-07-20 18:12:21 +00:00			```release-note:improvement
			`api: HTTP server now returns a 429 error code when hitting the connection limit`
			```