n8n · Overview
What n8n is, when to use it, the recommended architecture and the differences between execution modes (regular vs queue) at Rollin Host.
n8n is an open-source visual automation platform: think of it as a Zapier you host yourself. It is the most widely used tool in Brazil for orchestrating AI + WhatsApp + databases + external APIs.
Why n8n and not Make/Zapier
- Self-hosted: data stays on your server (LGPD-friendly)
- No execution limits (you only pay for the server)
- Custom code in JavaScript or Python right inside the flow
- 400+ native integrations + a generic HTTP connector
Guides
Queue mode with Redis
How to run n8n in production with workers and a Redis queue for high concurrency.
Public webhooks
Expose n8n webhooks with HTTPS, authentication and spam protection.
When to switch from regular to queue mode
| Scenario | Mode |
|---|---|
| Dev / staging | Regular |
| < 100 executions/day | Regular |
| 100-1000 executions/day | Regular with external Postgres |
| 1000+ executions/day | Queue mode |
| Workflows with heavy steps (LLM call, > 10s) | Queue mode |
Recommended server
| Active workflows | Plan |
|---|---|
| 1-10 workflows | VPS Inicial |
| 10-50 workflows | VPS Pro |
| 50+ workflows + queue mode | VPS Plus |
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