A lightweight, idiomatic, and composable router for building Go HTTP services, especially REST APIs.
Chi is a lightweight, idiomatic, and composable HTTP router for building Go services, particularly REST APIs. It helps developers structure large, maintainable API projects by providing a modular routing system built on Go's standard `net/http` and `context` packages. The router focuses on simplicity, performance, and seamless integration with the existing Go ecosystem.
Go developers building HTTP services, especially those creating large REST APIs that need to remain maintainable as they scale. It's also suitable for teams valuing standard library compatibility and modular design.
Developers choose Chi for its minimalistic design, full compatibility with `net/http`, and powerful composability features like middleware stacks and sub-routers. Its focus on idiomatic Go patterns and production robustness makes it a reliable choice for enterprise-grade API development.
lightweight, idiomatic and composable router for building Go HTTP services
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Core router is under 1000 lines of code with strong performance benchmarks, making it efficient for high-traffic APIs as shown in the benchmarks section.
100% compatible with net/http, allowing seamless use of any Go middleware or package without vendor lock-in, which is emphasized in the README.
Supports middleware chains, route groups, and sub-router mounting, enabling decomposition of large APIs into manageable parts, as illustrated in the REST preview example.
Built on Go's context package for fine-grained request control, including timeouts and cancellations, which is critical for production reliability and mentioned in the philosophy.
Lacks integrated support for authentication, validation, or WebSockets, requiring additional packages and setup for common production needs.
The composable approach can lead to a steeper learning curve and more boilerplate code, especially for developers unfamiliar with middleware patterns and context management.
For advanced functionality, dependence on third-party middleware packages can introduce integration challenges and maintenance overhead, as noted in the extra packages section.