Echo is a fast HTTP router (zero memory allocation) + micro web framework in Go.
- Zippy router.
- Extensible middleware/handler, supports:
- Middleware
func(*echo.Context)func(echo.HandlerFunc) echo.HandlerFuncfunc(http.Handler) http.Handlerhttp.Handlerhttp.HandlerFuncfunc(http.ResponseWriter, *http.Request)
- Handler
func(*echo.Context)http.Handlerhttp.HandlerFuncfunc(http.ResponseWriter, *http.Request)
- Middleware
- Sub/Group routing
- Handy encoding/decoding functions.
- Serve static files, including index.
go get github.com/labstack/echo
package main
import (
"net/http"
"github.com/labstack/echo"
mw "github.com/labstack/echo/middleware"
"github.com/rs/cors"
"github.com/thoas/stats"
)
type user struct {
ID string `json:"id"`
Name string `json:"name"`
}
var users map[string]user
func init() {
users = map[string]user{
"1": user{
ID: "1",
Name: "Wreck-It Ralph",
},
}
}
func createUser(c *echo.Context) {
u := new(user)
if err := c.Bind(u); err == nil {
users[u.ID] = *u
if err := c.JSON(http.StatusCreated, u); err == nil {
// Do something!
}
return
}
http.Error(c.Response, http.StatusText(http.StatusBadRequest), http.StatusBadRequest)
}
func getUsers(c *echo.Context) {
c.JSON(http.StatusOK, users)
}
func getUser(c *echo.Context) {
c.JSON(http.StatusOK, users[c.P(0)])
}
func main() {
e := echo.New()
//*************************//
// Built-in middleware //
//*************************//
e.Use(mw.Logger)
//****************************//
// Third-party middleware //
//****************************//
// https://github.com/rs/cors
e.Use(cors.Default().Handler)
// https://github.com/thoas/stats
s := stats.New()
e.Use(s.Handler)
// Route
e.Get("/stats", func(c *echo.Context) {
c.JSON(200, s.Data())
})
// Serve index file
e.Index("public/index.html")
// Serve static files
e.Static("/js", "public/js")
//************//
// Routes //
//************//
e.Post("/users", createUser)
e.Get("/users", getUsers)
e.Get("/users/:id", getUser)
//****************//
// Sub router //
//****************//
// Sub - inherits parent middleware
sub := e.Sub("/sub")
sub.Use(func(c *echo.Context) { // Middleware
})
sub.Get("/home", func(c *echo.Context) {
c.Text(http.StatusOK, "Sub route /sub/welcome")
})
// Group - doesn't inherit parent middleware
grp := e.Group("/group")
grp.Use(func(c *echo.Context) { // Middleware
})
grp.Get("/home", func(c *echo.Context) {
c.Text(http.StatusOK, "Group route /group/welcome")
})
// Start server
e.Run(":8080")
}Based on [julienschmidt/go-http-routing-benchmark] (https://github.com/vishr/go-http-routing-benchmark), April 1, 2015
Echo: 42728 ns/op, 0 B/op, 0 allocs/op
BenchmarkAce_GithubAll 20000 65328 ns/op 13792 B/op 167 allocs/op
BenchmarkBear_GithubAll 10000 241852 ns/op 79952 B/op 943 allocs/op
BenchmarkBeego_GithubAll 3000 458234 ns/op 146272 B/op 2092 allocs/op
BenchmarkBone_GithubAll 1000 1923508 ns/op 648016 B/op 8119 allocs/op
BenchmarkDenco_GithubAll 20000 81294 ns/op 20224 B/op 167 allocs/op
BenchmarkEcho_GithubAll 30000 42728 ns/op 0 B/op 0 allocs/op
BenchmarkGin_GithubAll 20000 69373 ns/op 13792 B/op 167 allocs/op
BenchmarkGocraftWeb_GithubAll 10000 370978 ns/op 133280 B/op 1889 allocs/op
BenchmarkGoji_GithubAll 3000 542766 ns/op 56113 B/op 334 allocs/op
BenchmarkGoJsonRest_GithubAll 5000 452551 ns/op 135995 B/op 2940 allocs/op
BenchmarkGoRestful_GithubAll 200 9500204 ns/op 707604 B/op 7558 allocs/op
BenchmarkGorillaMux_GithubAll 200 6770545 ns/op 153137 B/op 1791 allocs/op
BenchmarkHttpRouter_GithubAll 30000 56097 ns/op 13792 B/op 167 allocs/op
BenchmarkHttpTreeMux_GithubAll 10000 143175 ns/op 56112 B/op 334 allocs/op
BenchmarkKocha_GithubAll 10000 147959 ns/op 23304 B/op 843 allocs/op
BenchmarkMacaron_GithubAll 2000 724650 ns/op 224960 B/op 2315 allocs/op
BenchmarkMartini_GithubAll 100 10926021 ns/op 237953 B/op 2686 allocs/op
BenchmarkPat_GithubAll 300 4525114 ns/op 1504101 B/op 32222 allocs/op
BenchmarkRevel_GithubAll 2000 1172963 ns/op 345553 B/op 5918 allocs/op
BenchmarkRivet_GithubAll 10000 249104 ns/op 84272 B/op 1079 allocs/op
BenchmarkTango_GithubAll 300 4012826 ns/op 1368581 B/op 29157 allocs/op
BenchmarkTigerTonic_GithubAll 2000 975450 ns/op 241088 B/op 6052 allocs/op
BenchmarkTraffic_GithubAll 200 7540377 ns/op 2664762 B/op 22390 allocs/op
BenchmarkVulcan_GithubAll 5000 307241 ns/op 19894 B/op 609 allocs/op
BenchmarkZeus_GithubAll 2000 752907 ns/op 300688 B/op 2648 allocs/op