Iris: A Fast Web Framework for Building Web Apps and APIs

Iris is a web framework for Go that makes it easier to build websites and APIs. Think of it like a toolkit that handles all the plumbing of listening for web requests, routing them to the right code, and sending responses back. The main selling point is speed—the README claims it's the fastest web framework available, with benchmarks showing it outperforms popular alternatives like .NET Core and Express.js.

The framework handles the core tasks any web developer needs: receiving HTTP requests (GET, POST, PUT, DELETE, etc.), matching URLs to specific functions, extracting information from URLs and form data, and returning responses. You can build traditional websites with templates, REST APIs that return JSON, or hybrid applications. For example, a simple three-line program can start a web server that responds to requests at specific URLs. The README includes extensive examples showing how to extract values from URLs (like capturing a user ID), validate incoming data, and organize code using MVC patterns (Model-View-Controller, a common way to structure applications).

A distinctive aspect of Iris is its emphasis on community support. The project highlights that it offers free support to users—the README frames this as unusual and valuable, positioning the maintainers as responsive to issues and welcoming to developers of all skill levels, even those whose English isn't perfect. The framework also includes built-in dependency injection, a feature that lets developers pass required objects or data into their functions automatically, which can reduce boilerplate code and make applications easier to test.

The project is actively developed, with version 11.2.0 in progress. One notable change coming in that release involves overhauling websocket support to use a separate framework called Neffos, which promises better scalability for applications that need to handle millions of simultaneous connections. The current version is stable and ready to use—installation is straightforward if you have Go installed.