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The debug block exposed only gauges (buckets, quarantined, inFlight) — state, not work.
A real flapping Firestick reads as flap.buckets:36, quarantined:0, indistinguishable
from healthy. Add lightweight in-memory throughput counters (total + last-completed
rolling window) so the server tells the flapper/flood story itself.
- lib/rolling-counter.js: shared bounded scalar counter (total, curWindow, lastWindow,
windowStart); rolls lazily on bump AND read (no timer), idle decays to 0.
DEBUG_STATS_WINDOW_MS default 60000.
- flap-limiter: refused{Total,LastWindow} (every allow:false), quarantineStarts{Total,
LastWindow} (a quarantine event stays visible after the gauge decays).
- ota-breaker: stats() rateBackoff{Total,LastWindow}.
- ota-download-guard: servedTotal/shedTotal alongside the per-window values.
- database: maintenance sweepsTotal (confirm the prune is firing, not stalled).
- routes/status: debug block gains ota_breaker + the new fields (aggregate-only, cheap).
Tests: rolling-counter window-roll + idle decay; each counter increments on the right
event; booted /api/status asserts the new fields present + numeric. Suite 285/285.
Fallout doc: observability section lists the fields + what each tells a soak-watcher.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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| .. | ||
| agency-layouts.js | ||
| agency-targets.js | ||
| apk-cache.js | ||
| branding.js | ||
| chunked-prune.js | ||
| command-queue.js | ||
| content-ack-limiter.js | ||
| content-ingest.js | ||
| device-identity.js | ||
| device-sanitize.js | ||
| flap-limiter.js | ||
| image-gen.js | ||
| log-coalescer.js | ||
| ota-breaker.js | ||
| ota-download-guard.js | ||
| pair-lockout.js | ||
| permissions.js | ||
| reconnect-throttle.js | ||
| rolling-counter.js | ||
| safe-socket.js | ||
| schedule-eval.js | ||
| schema-check.js | ||
| secretbox.js | ||
| socket-rooms.js | ||
| status-log-writer.js | ||
| tenancy.js | ||
| tenant-cascade-migration.js | ||
| totp-lockout.js | ||
| totp.js | ||
| user-deletion.js | ||
| zone-validate.js | ||