Martini is a web framework for the Go programming language that provides a toolkit for building web applications. It functions as a routing engine and an HTTP middleware pipeline to map network requests to specific handler functions.
The framework is distinguished by its dependency injection system, which automatically resolves and provides requested service types as arguments to handler functions. This allows for the decoupling of business logic from infrastructure by matching requested types against a registry of available services.
The project covers a broad range of web capabilities, including route grouping via path prefixes, the execution of middleware stacks for cross-cutting concerns, and the hosting of static assets from local directories. It also includes tools for managing HTTP responses, routing through regular expressions, and recovering from runtime panics to prevent server crashes.