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http-kit

Simple, high-performance event-driven HTTP client+server for Clojure

http-kit is a minimalist and efficient Ring-compatible HTTP client+server for Clojure.

It uses an event-driven architecture to support highly concurrent a/synchronous web applications, and features a simple unified API for WebSocket and HTTP long-polling/streaming.

Latest release/s

• 2023-06-30 2.7.0 (stable): changes

See here for earlier releases.

Why http-kit?

• Ring compliant: http-kit is a drop-in replacement for the standard Ring Jetty adapter. You can use it with all your current libraries and middleware.

• High performance: http-kit uses an event-driven architecture like nginx, and is fast. It comfortably handles tens of thousands of requests/sec on even low-end hardware.

• High concurrency: http-kit is efficient. Its RAM usage is O(n), with only few kB used per connection. Tests have shown http-kit happily serving >600k concurrent connections.

• Clean, simple, small: written from the ground-up to be lean, the entire http-kit client+server JAR is ~90kB with zero dependencies and ~3k lines of code.

• Sync or async: synchronous is simple, asynchronous fast & flexible. With http-kit you get the best of both with a simple API that lets you mix & match to best fit your use case.

• WebSockets and Comet: realtime web apps are a breeze with http-kit, with great out-the-box support for both WebSockets and efficient HTTP long-polling.

Status

http-kit was created by @shenfeng, but is currently being maintained by its community.

A big thank-you to the current contributors for keeping the project going! Additional contributors very welcome: please ping me if you'd be interested in lending a hand.

- Peter Taoussanis

Documentation

• Full documentation (getting started and more)
• Auto-generated API reference: Codox, clj-doc

License

Copyright © 2012-2023 Feng Shen and contributors.
Licensed under Apache 2.0.