Setting the file. One moment.
Subchapter 7.30
references/support-topics/external-api-critical-path.mdMarkdown978 BView on GitHub
For external API candidates, identify the customer route that waits on the slow hostname and whether the call is on the critical path.
Use callers-by-route evidence, transfer size, and source awaits. Check whether the upstream call can run in parallel, be cached safely, be reduced in payload size, or move after response.
Do not cache mutations, secrets, per-user responses, or upstream calls whose freshness requirement is unknown.
Name the hostname, caller route, p75 or p95 latency, and the exact source line that waits on the call.