Status Json

Public, no-auth. Live endpoint health: per-source freshness, request-rate-log p50/p95, total request count last hour.

Same data the /status page renders. Refreshes every 90 seconds.

Cached 90s with stale-while-revalidate plus background refresh, so a request never blocks on the heavy per-source aggregate. Warm cache is served directly; a stale cache is served immediately while one worker recomputes off the request path; only a truly cold cache computes inline, single-flighted and time-bounded so a slow aggregate returns a quick 503 instead of hanging into a proxy 500. (Pre-fix, concurrent cold polls each ran the same ~3s aggregate at once; I/O contention inflated every one to ~18s and tripped the worker timeout into 500s.)