Jroutes

Jroutes is a Java-based routing library designed to map HTTP requests to handler functions in web applications and microservices. It emphasizes a lightweight footprint, a straightforward API, and support for both annotation-driven and DSL-style route definitions.

Origin and development of Jroutes trace to the mid-2010s within the open-source Java ecosystem, where developers sought a minimal, easy-to-use routing layer as an alternative to heavier full-stack frameworks. The project has seen ongoing community-driven development with focus on predictable performance, simple routing semantics, and ease of testing.

Core concepts and features include a Router that aggregates Route definitions, support for path patterns with parameters, and filters by HTTP method. Routes can employ middleware for cross-cutting concerns and can be organized into groups or nested routers for modularity. Jroutes also provides mechanisms to extract path and query parameters into a request context, integrates with dependency injection containers, and offers basic error handling hooks and testing utilities. It supports asynchronous request processing through futures or promises, enabling non-blocking handlers in compatible environments.

Usage in a typical setup involves creating a Router, defining routes, and mounting the router into a web server. For example: Router router = new Router(); router.get("/users/{id}", ctx -> { String id = ctx.pathParam("id"); // handle user by id });

Relation to the broader ecosystem: Jroutes is designed to be interoperable with existing Java servers and can complement other frameworks. It is one option among lightweight routing libraries and is often compared with more feature-rich stacks. The project is released as open-source software with an emphasis on clarity, simplicity, and testability.