eggjs/egg

Analysis updated 2026-06-21

★ 18,999TypeScriptAudience · developerComplexity · 3/5LicenseSetup · moderate

Mindmap

mindmap
  root((Egg.js))
    What it does
      Enterprise web framework
      Built on Koa
      Plugin system
    Tech Stack
      Node.js
      TypeScript
      Koa
    Use Cases
      Backend APIs
      Multi-core servers
      Team frameworks
    Audience
      Backend developers
      Enterprise teams

mindmap root((Egg.js)) What it does Enterprise web framework Built on Koa Plugin system Tech Stack Node.js TypeScript Koa Use Cases Backend APIs Multi-core servers Team frameworks Audience Backend developers Enterprise teams

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What do people build with it?

USE CASE 1

Build a scalable REST API with consistent structure for a medium-to-large team without reinventing conventions.

USE CASE 2

Create a multi-core Node.js server that uses all CPU cores without extra configuration.

USE CASE 3

Add community plugins for auth, caching, or databases that integrate cleanly under Egg's conventions.

USE CASE 4

Build a company-wide internal framework on top of Egg with your team's conventions baked in.

What is it built with?

Node.jsTypeScriptKoa

How does it compare?

	eggjs/egg	snarktank/ralph	reduxjs/reselect
Stars	18,999	19,019	19,039
Language	TypeScript	TypeScript	TypeScript
Setup difficulty	moderate	moderate	easy
Complexity	3/5	3/5	2/5
Audience	developer	developer	developer

Figures from each repo's GitHub metadata at analysis time.

How do you get it running?

Difficulty · moderate Time to first run · 30min

Requires Node.js 20.19.0 or newer, older Node versions will not work.

Use freely for any purpose including commercial use, as long as you keep the copyright notice.

In plain English

Egg.js is a Node.js web framework built on top of Koa, a lightweight web library, and designed specifically for enterprise-grade applications where teams need consistency and scalability. While Koa gives you a minimal, unopinionated foundation, Egg adds structure: a plugin system so teams can share reusable functionality, a framework customization layer so companies can build their own opinionated base on top of Egg, and built-in process management so Node.js apps can take full advantage of multi-core servers without extra configuration. The plugin ecosystem is a key feature, hundreds of community-built plugins handle common tasks like database connections, authentication, caching, logging, and more, all following Egg's conventions so they integrate cleanly together. You would use Egg.js if you are building a backend API or server-side web app with Node.js for a medium-to-large team, and you want more structure and enterprise-friendly patterns than bare Koa provides while still staying in the JavaScript/TypeScript ecosystem. It requires Node.js 20.19.0 or newer, is written in TypeScript, and is licensed under MIT. It is particularly popular in China and widely used in production at large companies.

Copy-paste prompts

Prompt 1

How do I create a new Egg.js project and define a REST API route that returns JSON data?

Prompt 2

Show me how to install and configure an Egg.js plugin for connecting to a PostgreSQL database.

Prompt 3

How does Egg.js handle multi-core server processes, and how do I configure it for production?

Prompt 4

Walk me through building a custom Egg.js framework that wraps Egg with my company's shared conventions.

Prompt 5

How do I write a unit test for an Egg.js controller using the built-in testing utilities?

Frequently asked questions

What is egg?

Egg.js is a Node.js web framework that adds enterprise-friendly structure, a plugin system, and multi-core process management on top of the lightweight Koa library, ideal for teams building backend APIs.

What language is egg written in?

Mainly TypeScript. The stack also includes Node.js, TypeScript, Koa.

What license does egg use?

Use freely for any purpose including commercial use, as long as you keep the copyright notice.

How hard is egg to set up?

Setup difficulty is rated moderate, with roughly 30min to a first successful run.

Who is egg for?

Mainly developer.

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