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4bda49cf60
Don't let telemetry/logging cook the loop under a storm.
- lib/log-coalescer.js: dedup+count high-frequency lines, flush ONE summarized line per
key per window ("[loop-lag] band=critical (x47 in 30s)"). Bounded buffer (auto-flush
at MAX_KEYS). Applied to the loop-lag "still loaded" line (band CHANGES stay immediate),
the per-request OTA check line, and "Device reconnected".
- loop-lag: event_loop_lag rows are BUFFERED and batch-inserted on a flush interval
(was a synchronous INSERT per sample); the buffer is bounded (drop-oldest). Its
retention prune now rides the Item-A chunkedDelete so this table can never repeat the
status_log bloat-then-freeze. /api/status still reads in-memory current (real-time
band unaffected).
- Bounded the previously un-evicted per-device Maps: content-ack limiter gets an idle
sweep (started in server.js); status-log-writer.lastWritten is capped (drop-oldest;
it only suppresses a redundant consecutive row, so eviction is safe).
Tests: N identical lines -> one counted line; single line verbatim; coalescer buffer
bounded under a distinct-key flood; content-ack Map swept of idle buckets.
loop-lag-integration updated for the batched-insert cadence. Suite 266/266.
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 | ||
| 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 | ||