zenazn/goji

Goji is a small web framework for Go, a programming language made by Google. It gives developers a straightforward way to build web servers by handling URL routing and request processing without a lot of built-in opinions about how the rest of the application should be structured. The README notes upfront that this original version of Goji has since been followed by a newer version at goji.io, written by the same author and reflecting several more years of experience. The original repository is still maintained and considered stable, but new projects are pointed toward the newer version. The framework supports two styles of URL pattern matching: Sinatra-style patterns like /hello/:name where the colon marks a named variable, and regular expressions for more complex cases. Developers can also define custom matching logic if neither of those covers the situation. Routes are tried in the order they are added, which keeps routing behavior easy to predict and debug. Goji is designed to work alongside Go's standard library, so any existing Go web handler can plug into it without modification. It also supports middleware, which are small pieces of code that run before or after each request to handle things like logging or authentication. A context object is threaded through the middleware and handler chain, allowing different parts of the code to share state for a given request without using global variables. On the operational side, Goji can shut down gracefully when receiving a stop signal, finishing any requests already in progress before exiting. It also works with Einhorn, a tool that enables reloading a running server with zero downtime. The API is considered frozen, meaning existing code written against it will not break in future versions.