What is examples?

Koa is a web framework for Node.js, built by the same team that created Express. It uses a different approach to handling requests: middleware functions are written as async functions and run in a predictable order using a concept sometimes called the "onion" model. This repository is a companion collection of small, self-contained example applications that show how to use Koa for common server-side tasks. The bundled examples cover a wide range of typical web development needs: handling 404 errors, parsing request bodies, managing cookies, protecting forms with CSRF tokens, rendering HTML templates, streaming files, handling file uploads, running middleware conditionally, and setting up virtual hosts that serve different content depending on the domain name. Each example lives in its own folder and is meant to be read and run independently, so you can focus on exactly the pattern you need. Beyond the bundled examples, the README lists a number of external repositories that demonstrate Koa in more complete applications. These include a blog backed by MongoDB, a REST API skeleton, a to-do app that pairs Koa with React, and several starter kits that add TypeScript, user authentication with Passport, database access via Postgres or Mongoose, and Docker support. There are also links to Yeoman generators for scaffolding Koa projects, boilerplates for API development and microservices, and a couple of tutorial articles on building REST APIs and adding user login flows. This repository is primarily a learning resource rather than a deployable application. If you are trying to understand how Koa works or how to wire up a specific feature such as flash messages, content negotiation, or server-sent events, the examples here show the minimal amount of code needed to make that feature run. The README does not explain Koa in depth, it assumes you will open the example folders and read the source files directly.