Reitit

There seems to be a slight misconception in the prompt; Reitit is actually a high-performance, data-driven routing library for Clojure and ClojureScript. While the prompt mentions Elixir, the actual Reitit library was created by Metosin specifically for the Clojure ecosystem. It handles routing, middleware, and request parsing, and is frequently used with the Clojure Reagent and re-frame libraries.

Reitit is renowned in the Clojure community for its exceptional performance and low overhead. By compiling routes into a highly optimized lookup structure, it minimizes the overhead typically associated with nested web routers. In independent benchmarks, Reitit often outperforms other popular Clojure routing tools like Compojure by a significant margin.

Yes, Reitit includes a frontend module specifically designed for ClojureScript single-page applications (SPAs). It provides robust tools for client-side routing, query parameter parsing, and even handling HTML5 history navigation. This allows developers to share routing logic and schema definitions between the Clojure backend and ClojureScript frontend.

Reitit treats middleware as simple data structures, allowing you to apply them globally or to specific route trees without relying on complex macros. This data-driven approach makes it incredibly easy to compose and reorder middleware chains for different API endpoints. It seamlessly integrates with Clojure Spec or Malli for rigorous data coercion and validation.