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.
Tutorials
Every tutorial below was tested hands-on before publishing. Pick your tool and follow along.
Make
Prevent Duplicate Records When a Make Scenario Reruns: 3 Deduplication Patterns
Stop Make scenarios from creating duplicate records on reruns: search-then-filter, data-store idempotency keys, and destination upserts, step by step.
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.
Make
How to Build Next-Gen Make AI Agents in the Scenario Builder
Build next-gen Make AI Agents in the scenario builder: visual execution, reasoning panel, dynamic routing, module tools, and one-click sharing. October 2026.
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.
n8n
Ni8mare (CVE-2026-21858): Patch n8n's CVSS 10.0 Webhook RCE and Rotate Your Credentials
Patch Ni8mare (CVE-2026-21858): upgrade self-hosted n8n to 1.121.0+ to fix the CVSS 10.0 webhook RCE, verify the fix, and rotate all exposed credentials.
n8n
n8n Retry On Fail and Paid APIs: Stop Double Charges with Idempotency Keys
n8n Retry On Fail re-sends failed HTTP calls. Learn how stable idempotency keys and a Postgres checkpoint table stop paid APIs from charging twice.
AI Coding Tools
GitHub Copilot Default Enablement (October 22): Admin Checklist Before Unconfigured Features Turn On
GitHub enables unconfigured Copilot features on October 22, 2026. Admin checklist for Business and Enterprise: default policy, exceptions, settings to review.