> ## Documentation Index
> Fetch the complete documentation index at: https://docs.lightning-go.cn/llms.txt
> Use this file to discover all available pages before exploring further.
# Lightning
> A lightweight, high-performance web framework for Go. Build fast HTTP services with clean routing, flexible middleware, and an expressive context API.
Lightning is a Go web framework designed for speed and simplicity. Powered by [fasthttp](https://github.com/valyala/fasthttp), it gives you trie-based routing, a composable middleware system, route groups, and a rich request/response API — all in a single, zero-fuss package.
Build and run your first Lightning app in minutes
Learn URL parameters, wildcards, and HTTP methods
Add logging, recovery, auth, and more to your handlers
Access request data and write responses with the Context object
## Get started in 3 steps
Add Lightning to your Go module with a single command.
```bash theme={null}
go get github.com/go-labx/lightning
```
Instantiate the app, register a route, and start the server.
```go theme={null}
package main
import (
"net/http"
"github.com/go-labx/lightning"
)
func main() {
app := lightning.DefaultApp()
app.Get("/ping", func(ctx *lightning.Context) {
ctx.JSON(http.StatusOK, lightning.Map{"message": "pong"})
})
app.Run()
}
```
Run your app and send a request to confirm it's working.
```bash theme={null}
go run main.go
curl http://127.0.0.1:6789/ping
# {"message":"pong"}
```
## Explore the framework
Organize routes under shared prefixes with scoped middleware
Parse JSON bodies, query strings, headers, and cookies
Send JSON, XML, HTML, plain text, and file responses
Customize 404 and 500 handlers for your application
Serve assets, images, and other static content
Tune app name, JSON codecs, body size limits, and debug mode