http-kit/http-kit

Health v2 · maintenance only

Adoption not part of the score

2565 stars · 352 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

http-kit is a minimalist, high-performance, event-driven HTTP client and server for Clojure, fully Ring-compatible as a drop-in replacement for the Jetty adapter. It offers a unified API for sync/async handling, WebSockets, and HTTP long-polling/streaming in a tiny ~90kB zero-dependency JAR.

Use cases

• serve a Ring web app with a fast async HTTP server
• build realtime apps with WebSockets or long-polling
• make high-concurrency async HTTP requests from Clojure
• replace the Ring Jetty adapter for better performance
• handle hundreds of thousands of concurrent connections with low memory
• stream HTTP responses from a Clojure backend

When to choose

• you need a lean, zero-dependency Ring server with excellent concurrency
• your app mixes WebSockets, streaming, and standard HTTP on the JVM
• you want sync and async request handling through one simple API

When to avoid

• you need a full-featured server with extensive built-in middleware and TLS tuning out of the box
• you are not on the JVM/Clojure ecosystem
• you prefer a widely-staffed corporate-maintained server over a community-maintained one

Facets

library · maturity stable

http-server http-client websocket middleware web-development backend apis jvm jvm-scripting cross-platform ring event-driven async high-concurrency long-polling zero-dependencies real-time

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markdown · JSON · MCP: product_card(name="http-kit/http-kit")