Routing with chi and Gin

Compare chi routers and Gin engines for path parameters, route groups, and middleware chains.

8 min readBuilding Backend ApplicationsBuild

Why Third-Party Routers?

Go 1.22 ServeMux handles basic routing well, but production APIs often need middleware per route group, automatic request validation, path parameter extraction in subrouters, and performance under high route counts. chi and Gin are the two most popular choices.

chi Router

chi is a lightweight, idiomatic Go router. It implements net/http Handler, so any middleware or handler that works with net/http works with chi. It supports route groups, URL parameters, and composable middleware.

Gochi-setup-with-route-groups.go

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chi routes are net/http compatible. You can use http.HandleFunc, chi.Router.Get, or any Handler interface. The Route method creates a scope for grouping.

Extract path parameters with chi.URLParam

Use chi.URLParam(r, "userID") to get the value of {userID} from the URL. This works anywhere in the handler chain, not just at the route level.

Gin Engine

Gin is a high-performance HTTP framework with a richer feature set. It provides built-in validation, JSON binding, renderers, and a tree-based router. Gin does not implement net/http Handler directly, but provides an adapter.

Gogin-setup-with-route-groups.go

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Gin uses gin.Context to access request data and write responses. It bundles Logger and Recovery middleware in gin.Default().

Route Groups

Route groups let you share prefixes and middleware across related endpoints. This keeps your router clean and avoids repeating middleware configuration on every route.

Feature	chi	Gin
Route groups	r.Route("/path", func(r chi.Router) {...})	r.Group("/path")
Middleware per group	r.Use(handler)	group.Use(handler)
Nested groups	Yes, full nesting	Yes, full nesting
Path parameters	{userID}	:userID
Catch-all routes	{rest:*}	*action

Middleware Chains

Both chi and Gin execute middleware in order. The first middleware registered runs first for incoming requests and last for responses. This onion-layer model lets you add logging, auth, and recovery in a predictable stack.

Gochi-middleware-chain-order.go

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Think of middleware as layers. The outermost layer wraps the innermost. Place recovery middleware early so it catches panics from all other middleware.

chi vs Gin

Criteria	chi	Gin
Philosophy	Minimal, stdlib compatible	Full-featured framework
net/http compatible	Yes, directly	No, needs adapter
Performance	Fast, tree-based	Fastest benchmark
Built-in validation	No	Yes, with binding tags
JSON binding	Manual json.Decode	Automatic with c.ShouldBind
Community	Growing, stdlib-focused	Very large, mature

When to choose which

Choose chi if you want stdlib compatibility, minimal abstractions, and full control. Choose Gin if you want batteries-included features like binding, validation, and rendering. Both are production-ready.

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