How n8n is built?
This article explains how n8n is built. n8n is an open-source workflow automation platform written in Node.js and commonly deployed in Docker containers. It uses a server process, a web frontend, a job queue, and a database to run and manage workflows.
How n8n is built: core architecture
The core architecture separates the user interface from the execution engine. The frontend is a web app that shows the visual workflow editor. The backend is a Node.js service that runs workflows and exposes APIs. A database stores workflows and credentials.
Key components and technologies
n8n is made of several clear parts. Each part plays a defined role.
- Node.js backend that executes workflow logic and nodes.
- React-based web frontend for the visual editor and management.
- Database for workflows, credentials, and execution state.
- Worker or queue system to run longer tasks outside the main request loop.
- Docker containers to package and deploy the services.
Extensibility and integrations
n8n uses a node system for integrations. Each node defines inputs, outputs, and how to call external APIs. Developers add custom nodes with JavaScript or TypeScript. This makes it easy to extend connectors and actions.
Deployment and scaling with Node.js and Docker
Docker makes deployments repeatable and portable. Small setups can run a single container. Production setups run multiple containers, scale workers, and use a central database. Add load balancing and shared storage for reliability and performance.
Conclusion
In short, n8n combines a Node.js backend, a web frontend, a database, and Docker-friendly deployment to deliver flexible workflow automation. The design favors modular nodes, open-source contributions, and container-based operations to help teams start automating quickly.
