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perf: reduce message delivery latency across all connection scenarios

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Surgical optimizations to eliminate message delivery delays after QR scan,
pm2 restart, and code updates:

Buffer/Flush:
- bufferTimeoutMs: 5s→3s (safety auto-flush cap)
- maxBufferTimeoutMs: 8s→3s (adaptive timeout ceiling)
- flushDebounceMs: 100ms→10ms (createBufferedFunction debounce)
- OFFLINE_BUFFER_TIMEOUT_MS: 5s→2s (first-connection buffer)
- AwaitingInitialSync: 4s→2s (history sync wait)

Mutex parallelism:
- receiptMutex: global→keyed by remoteJid (parallel receipt processing)
- notificationMutex: global→keyed by remoteJid (parallel notification processing)

Delay reduction:
- retryRequestDelayMs: 250ms→150ms
- transactionOpts.delayBetweenTriesMs: 3s→1s

Offline processing:
- BATCH_SIZE: 10→25 (fewer event loop yields)

Expected impact: QR scan worst-case 8s→2s, pm2 restart 100ms→10ms.
All existing customizations preserved (Circuit Breaker, Prometheus,
TcToken, CTWA Recovery, sanitizeCallerPn, Session Cleanup, LID Mapping,
Identity Key cache, clearRoutingInfoOnStart, wasm-bridge).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
Renato Alcara
2026-02-28 17:07:13 -03:00
parent 97336fc5cf
commit ce38e7836d
5 changed files with 15 additions and 15 deletions
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src/Utils/event-buffer.ts
+3 -3
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@@ -57,12 +57,12 @@ export function loadBufferConfig(): BufferConfig {
// perf(inbound-latency): reduced from 15s → 5s so the safety auto-flush fires sooner.
// processNodeWithBuffer always calls ev.flush() explicitly (no-op for this timer),
// but socket.ts's offline-phase buffer and any stalled buffer benefit from the lower cap.
bufferTimeoutMs: parseInt(process.env.BAILEYS_BUFFER_TIMEOUT_MS || '5000', 10),
bufferTimeoutMs: parseInt(process.env.BAILEYS_BUFFER_TIMEOUT_MS || '3000', 10),
minBufferTimeoutMs: parseInt(process.env.BAILEYS_BUFFER_MIN_TIMEOUT_MS || '1000', 10),
maxBufferTimeoutMs: parseInt(process.env.BAILEYS_BUFFER_MAX_TIMEOUT_MS || '8000', 10),
maxBufferTimeoutMs: parseInt(process.env.BAILEYS_BUFFER_MAX_TIMEOUT_MS || '3000', 10),
maxHistoryCacheSize: parseInt(process.env.BAILEYS_BUFFER_MAX_HISTORY_CACHE || '10000', 10),
maxBufferSize: parseInt(process.env.BAILEYS_BUFFER_MAX_SIZE || '5000', 10),
flushDebounceMs: parseInt(process.env.BAILEYS_BUFFER_FLUSH_DEBOUNCE_MS || '100', 10),
flushDebounceMs: parseInt(process.env.BAILEYS_BUFFER_FLUSH_DEBOUNCE_MS || '10', 10),
enableAdaptiveTimeout: process.env.BAILEYS_BUFFER_ADAPTIVE_TIMEOUT !== 'false',
enableMetrics: process.env.BAILEYS_BUFFER_METRICS === 'true' || process.env.BAILEYS_PROMETHEUS_ENABLED === 'true',
lruCleanupRatio: parseFloat(process.env.BAILEYS_BUFFER_LRU_CLEANUP_RATIO || '0.2'),