n8n Automation · Quick Reference

Lesson 10: Error Handling & Reliability — N8N Course Cheat Sheet

n8n Automation

In one line: Build workflows that survive the real world. Learn N8N's Error Trigger node, try/catch patterns, retry configuration, and how to set up instant failure alerts so nothing silentl...

Key Ideas

11The Error Trigger Node. The Error Trigger node is N8N's dedicated failure catcher. You create a separate "error workflow" and link it to your main workflow. Whenever the main workflow fails f...

22Try/Catch in the Code Node. When making HTTP requests or calling external APIs inside a Code node, you should always wrap the call in a try/catch block. This lets you handle failures gracefully —...

33Retry Settings — Automatic Recovery. N8N has built-in retry logic at the node level. When a node fails due to a transient error (network timeout, 503, rate limit), N8N can automatically retry it before ma...

44Failure Alerting — Slack + Email. A workflow failing silently in production is worse than no automation at all. Build an error workflow that alerts you the moment something breaks — with enough context...

55Production Reliability Patterns. The difference between a toy workflow and a production automation is reliability engineering. Here are the four patterns every production N8N workflow should implement:

Code Examples

try {
  // Attempt the API call
  const result = await $helpers.httpRequest({
    method: 'GET',
    url: 'https://api.example.com/data',
    headers: {
      'Authorization': `Bearer ${$credentials.apiKey}`
    }
  });

  // Return success with d...