n8n
How to Downgrade n8n in Docker: Rollback Guide with db:revert (2026)
Downgrade n8n in Docker safely: revert database migrations with n8n db:revert on the current version first, then pin the older image tag and restart the stack.
N8n
n8n
n8n Workflow Force-Stopped After Hours? Fix Out-of-Memory Crashes with Batch Processing
n8n workflows dying after hours with no node error are usually memory kills. Diagnose the crash, then fix it with batching, execution pruning, and heap caps.
n8n
How to Fix n8n Schedule Trigger Firing at the Wrong Time in Docker: The Timezone Layer Cake
n8n Schedule Trigger fires hours off? Fix Docker timezone bugs by setting node Timezone, workflow timezone, and GENERIC_TIMEZONE in the right order.
n8n
How to Fix n8n Code Node Not Reading Environment Variables ($env Undefined)
Fix n8n Code node environment variable errors: restore $env access safely with N8N_BLOCK_ENV_ACCESS_IN_NODE, Python runner settings, and allowlist alternatives.
n8n
The Complete n8n Guide: Install, Build AI Agents, Scale, and Secure Your Instance
The complete n8n guide: install and self-host n8n, build AI agents, add RAG and memory, scale with queue mode, and keep your instance patched and secure.
n8n
n8n AI Agent Race Conditions: 3 Atomic Claiming Patterns
Prevent double bookings from concurrent n8n AI agents: atomic claim with INSERT ON CONFLICT, a pending/done two-phase, and re-read state before writes.
n8n
How to Fix n8n Telegram Trigger Not Working: A 6-Step Diagnostic Checklist
Fix the n8n Telegram Trigger not firing: diagnose with getWebhookInfo, re-register the webhook, then check test URLs, privacy mode, and N8N_WEBHOOK_URL.
n8n
How to Migrate n8n from SQLite to PostgreSQL Without Losing Workflows
Migrate n8n from SQLite to PostgreSQL with the CLI: export entities, provision Postgres, repoint n8n via DB_POSTGRESDB_* variables, import, and verify.
n8n
How to Run n8n Code Nodes with External Task Runners in Docker
n8n 3.0 deprecated internal task runners. Set up external mode in Docker: the n8nio/runners sidecar compose file, auth token wiring, and Python allowlists.
n8n
How to Fix n8n 429 Rate Limit Errors with Staggered Schedule Triggers
Stop n8n 429 rate limit errors by staggering Schedule Triggers off the hour, adding jitter, and treating 429 as an expected retry, not a crash.