Lit 🔥

Lit is an expressive and fast HTTP framework for Golang. It aims to enhance development by providing great simplicity, extensibility and maintainability.

Documentation

Check Lit documentation.

Getting started

Create a new Go project and import Lit with the command:

go get github.com/jvcoutinho/lit

Write this to your main.go file:

package main

import (
  "log"
  "net/http"

  "github.com/jvcoutinho/lit"
  "github.com/jvcoutinho/lit/render"
)

func main() {
  r := lit.NewRouter()
  r.Use(lit.Log)
  r.Use(lit.Recover)

  r.GET("/", HelloWorld)

  server := http.Server{Addr: ":8080", Handler: r}
  log.Fatalln(server.ListenAndServe())
}

func HelloWorld(r *lit.Request) lit.Response {
  return render.OK("Hello, World!")
}

Then you can start adding new routes and middlewares.

Features

Speed and efficiency: It uses httprouter, a very fast zero-allocation router. See benchmarks.
Expressiveness: Its constructs make room for declarative programming, creating code that is more readable, maintainable, extensible and testable.
Flexibility: It allows one to easily extend its constructs. Creating new validations, middlewares and responses, for example, is very simple and intuitive.
Idiomatic: It uses latest Go features, such as generics, in order to build a framework that is elegant to code.

Check an example of lit.Handler vs http.Handler.

Benchmarks

The instances below were tested with the specifications:

goos: windows
goarch: amd64
pkg: github.com/julienschmidt/go-http-routing-benchmark
cpu: 11th Gen Intel(R) Core(TM) i7-11800H @ 2.30GHz

You can check the methodology or try yourself with go-http-routing-benchmark.

GitHub API

Router	Memory for handler registration	Number repetitions	Latency per repetition	Heap memory per repetition	Allocations per repetition
Chi	94888 B	10000	105680 ns/op	61713 B/op	406 allocs/op
Gin	94888 B	84152	14056 ns/op	0 B/op	0 allocs/op
Lit 🔥	42088 B	65989	17919 ns/op	0 B/op	0 allocs/op
Gorilla	1319632 B	612	1886488 ns/op	199684 B/op	1588 allocs/op
HttpRouter	37136 B	114933	10511 ns/op	0 B/op	0 allocs/op
Martini	485032 B	596	2070638 ns/op	231420 B/op	2731 allocs/op

Parse API

Router	Memory for handler registration	Number repetitions	Latency per repetition	Heap memory per repetition	Allocations per repetition
Chi	9656 B	315666	11549 ns/op	7904 B/op	52 allocs/op
Gin	7864 B	3118021	1144 ns/op	0 B/op	0 allocs/op
Lit 🔥	5776 B	2670331	1342 ns/op	0 B/op	0 allocs/op
Gorilla	105448 B	75290	47507 ns/op	23632 B/op	198 allocs/op
HttpRouter	5072 B	4421617	816 ns/op	0 B/op	0 allocs/op
Martini	45808 B	45362	79979 ns/op	25696 B/op	305 allocs/op

Fake API (only static routes)

Router	Memory for handler registration	Number repetitions	Latency per repetition	Heap memory per repetition	Allocations per repetition
Chi	83160 B	51685	69608 ns/op	47728 B/op	314 allocs/op
Gin	34344 B	385328	9302 ns/op	0 B/op	0 allocs/op
Lit 🔥	25560 B	450072	7944 ns/op	0 B/op	0 allocs/op
Gorilla	582536 B	7695	500949 ns/op	113042 B/op	1099 allocs/op
HttpRouter	21712 B	638422	5716 ns/op	0 B/op	0 allocs/op
Martini	309880 B	3915	916608 ns/op	129211 B/op	2031 allocs/op

As seen, Lit consumes less memory to register a batch of routes and has performance comparable to the top performers, such as Gin Gonic and HttpRouter.

Contributing

Feel free to open issues or pull requests!

João Victor de Sá Ferraz Coutinho joao.coutinho9@gmail.com