Queue Mode in n8n
From the n8n cheat sheet · Scaling & Performance · verified Jul 2026
Queue Mode
Scale n8n with workers and Redis
bash
# Architecture
Main Instance: UI, API, triggers, webhook reception
Workers: Execute workflows from queue
Redis: Message broker (Bull queue)
PostgreSQL: Required (SQLite not supported)
# Main Instance
EXECUTIONS_MODE=queue
QUEUE_BULL_REDIS_HOST=redis
# Worker Instance
docker run n8nio/n8n worker --concurrency=10⚡ Queue mode: 220+ executions/second possible
💡 PostgreSQL required for queue mode (not SQLite)
📌 Worker concurrency: 10+ parallel workflows each
🎯 1 worker per CPU core is good starting point
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