r3 ☆

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Description:
High-performance URL router library

Type: Formula | Tracked Since: Dec 28, 2025

Links: Homepage | formulae.brew.sh

Category: Developer tools

Tags: c-library routing networking performance radix-tree

Install: brew install r3

About:
R3 is a high-performance URL router library written in C. It features a radix tree structure for efficient route matching and supports dynamic route parameters. It is designed to be lightweight and fast, making it ideal for embedding in web servers and other network applications.

Key Features:

Radix tree-based routing for O(1) or O(log n) lookups
Support for dynamic path parameters and wildcards
C library with bindings for multiple languages
Zero-copy memory management for efficiency

Use Cases:

Building custom web servers or proxies requiring fast routing
Implementing API gateways with complex URL matching rules
Embedded systems where performance and low memory footprint are critical

Alternatives:

libmicrohttpd – Provides a full HTTP server stack, whereas R3 focuses solely on the routing logic.
OpenResty (lua-resty-route) – Lua-based routing within the Nginx ecosystem, offering more scripting flexibility but requiring a larger runtime.

Version History

Detected	Version	Rev	Change	Commit
Sep 15, 2025 8:43pm		0	VERSION_BUMP	0b25d82f
Sep 14, 2024 2:35am		0	VERSION_BUMP	f1a35582