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fasthttp-guide ( Build Web Application via FastHTTP )

step by step to build web application via fasthttp -- Fast HTTP implementation for Go

0. reference

  1. GopherCon 2019 - How I write HTTP web services after eight years

  2. chinese guide ----> go语言Fasthttp实践系列(1) helloWorldGetHandler World

0. note

I had built some business project with golang about 8 years. And use fasthttp in different projects over 5 years. fasthttp help to build high performance API server / web server / upload serv, etc. I had shared some good practice and experience of fasthttp to friends in tech meet up. It’s excited for me to share something, and friends enjoy on. So, I write this booklet to help some developer that work in a web application.

There are some different between ‘standard’ go net/http and fasthttp. I will clarify the different , show out the How/when/why to use fasthttp. show ideas, basic usage and experience of fasthttp.

1. fasthttp server side

1.1 define fasthttp server


type webServer struct {
	Config WebConfig
	addr   string
	Log    *zap.Logger
	ln     net.Listener
	router *router.Router
	debug  bool
}


func (ws *webServer) Run() (err error) {
	ws.muxRouter()
	// reuse port
	ws.ln, err = listen(ws.addr, ws.Log)
	if err != nil {
		return err
	}
	var lg = zaplogger.InitZapLogger(ws.Log)
	s := &fasthttp.Server{
		Handler:            ws.router.Handler,
		Name:               ws.Config.Name,
		ReadBufferSize:     ws.Config.ReadBufferSize,
		MaxConnsPerIP:      ws.Config.MaxConnsPerIP,
		MaxRequestsPerConn: ws.Config.MaxRequestsPerConn,
		MaxRequestBodySize: ws.Config.MaxRequestBodySize, //  100 << 20, // 100MB // 1024 * 4, // MaxRequestBodySize:
		Concurrency:        ws.Config.Concurrency,
		Logger:             lg,
	}

 
	return s.Serve(ws.ln)
 
}

1.2 router

yes , fasthttp router

what is ws.Recovery?

YES, it's middleware

func (ws *webServer) muxRouter() {
	ws.router.GET("/", ws.Recovery(ws.helloWorldGetHandler()))
	ws.router.GET("/get", ws.Recovery(ws.simpleGetHandler()))
	ws.router.POST("/post", ws.Recovery(ws.simplePostHandler()))
}

middleware, cool.....


func (ws *webServer)   Recovery(next func(ctx *fasthttp.RequestCtx)) func(ctx *fasthttp.RequestCtx) {
	fn := func(ctx *fasthttp.RequestCtx) {
		defer func() {
			if rvr := recover(); rvr != nil {
				ctx.Error("recover", 500)
			}
		}()
		// your middleware logic here


		// do next
		next(ctx)
	}
	return fn
}

1.3 handler

a POST handler via fasthttp

func (ws *webServer) simplePostHandler() func(ctx *fasthttp.RequestCtx) {
	return func(ctx *fasthttp.RequestCtx) {
		var tid = strconv.FormatInt(int64(ctx.ID()), 10)
		l := ws.Log.Named(tid)
		l.Debug("simplePostHandler")

		if ws.debug {
			l.Debug(tid, zap.String("request", ctx.String()))
			ctx.Request.Header.VisitAll(func(key, value []byte) {
				l.Debug(tid, zap.String("key", gotils.B2S(key)), zap.String("value", gotils.B2S(value)))
			})
			l.Debug(tid, zap.String("http payload", gotils.B2S(ctx.Request.Body())))
		}

		ctx.SetContentType(ContentRest)
		ctx.SetStatusCode(200)
		ctx.SetBody([]byte(`{"id":2101127497763529765,"plan_start_date":"2019-07-29","plan_end_date":"2019-02-12","actual_start_date":"2019-07-29","actual_end_date":"2019-07-29","is_done":false,"last_updated":"2019-08-01T14:12:17.983236","is_deleted":false,"user_id":2098735545843717147,"title":"00002"}`))
		return
	}
}

1.4 running fasthttp web-server

	var s = webserver.DefaultServer()
 
 
 
	s.Run()

2. fasthttp client side

2.1 define web client struct via fasthttp client

type WebClient struct {
	BaseURI        string
	TransactionID  string
	Authentication bool
	JwtToken       string
	UserAgent      string
	ContentType    string
	Accept         string
	TimeOut        time.Duration
	log            *zap.Logger
	Debug          bool
}

// Default  setup a default fasthttp client
func Default() *WebClient {
	var log = zaplogger.ConsoleDebug()
	return &WebClient{
		Authentication: false,
		TransactionID:  time.Now().String(),
		UserAgent:      "testAgent",
		ContentType:    "application/json; charset=utf-8",
		Accept:         AcceptJson,
		Debug:          true,
		log:            log,
	}
}

2.2 define a GET method


// FastGet do GET request via fasthttp
func (w *WebClient) FastGet(requestURI string) (*fasthttp.Response, error) {
	var log = w.log.Named("FastGet")
	t1 := time.Now()
	w.TransactionID = t1.String()
	req := fasthttp.AcquireRequest()
	resp := fasthttp.AcquireResponse()
	defer func() {
		fasthttp.ReleaseResponse(resp)
		fasthttp.ReleaseRequest(req)
	}()
	req.SetRequestURI(requestURI)
	req.Header.SetContentType(w.ContentType)
	req.Header.Add("User-Agent", w.UserAgent)
	req.Header.Add("TransactionID", w.TransactionID)
	req.Header.Add("Accept", w.Accept)
	if w.Authentication && len(w.JwtToken) > 0 {
		req.Header.Set("Authorization", "Bearer "+w.JwtToken)
	}

	// define web client request Method
	req.Header.SetMethod("GET")
	
	
	if w.Debug {
		req.Header.VisitAll(func(key, value []byte) {
			log.Debug(w.TransactionID, zap.String("key", gotils.B2S(key)), zap.String("value", gotils.B2S(value)))
		})
		log.Debug(w.TransactionID)
	}

	var timeOut = 3 * time.Second
	if w.TimeOut != 0 {
		timeOut = w.TimeOut
	}
	// DO GET request
	var err = fasthttp.DoTimeout(req, resp, timeOut)
	
	if err != nil {
		log.Error("post request error", zap.Error(err))
		return nil, err
	}
	if w.Debug {
		elapsed := time.Since(t1)
		log.Debug(w.TransactionID, zap.Duration("elapsed", elapsed))
		log.Debug(w.TransactionID, zap.Int("http status code", resp.StatusCode()))
		resp.Header.VisitAll(func(key, value []byte) {
			log.Debug(w.TransactionID, zap.String("key", gotils.B2S(key)), zap.String("value", gotils.B2S(value)))
		})
		log.Debug(w.TransactionID, zap.String("http payload", gotils.B2S(resp.Body())))
	}

	// add your logic code here , to handle response 
	
	var out = fasthttp.AcquireResponse()
	resp.CopyTo(out)

	return out, nil
}

1.3 call a GET request method

	var w = webclient.Default()
	w.Debug = true

	w.Authentication = true
	w.JwtToken = "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJleHAiOjE1OTY2NzIwMDAsInJvbGUiOiJ0ZXJtaW5hbF9hcGsiLCJzdGF0dXMiOiJhY3RpdmUiLCJ1c2VyX2lkIjoiNTBjNjg5MTAtNjEyYi00NjMzLTk2YjktNTA3NzhjNDViNTAwIn0.l1JHnOL85s3ajto0MKs-D6paW1YxpaMuxA0nzI0Xlfk"
	var url = "http://localhost:3001/get"
	var resp, err = w.FastGet(url)

	if err != nil {

	}
	if resp != nil {
		litter.Dump(gotils.B2S(resp.Body()))
	}
	// clean-up
	fasthttp.ReleaseResponse(resp)

3. clone, build and run

3.1 clone

export GOBIN=~/bin

cd ~
mkdir go-project
cd go-project

git clone https://github.com/tsingson/fasthttp-guide
cd ./fasthttp-guide

go mod tidy

3.2 build


go install  -gcflags=-trimpath=OPATH -asmflags=-trimpath=OPATH -ldflags "-w -s" ./cmd/...

3.3 run in two terminal

terminal 1

cd $GOBIN
./test-server

terminal 2

cd $GOBIN
./test-client

output

client side

2019-08-02T06:23:38.671+0800	DEBUG	FastGet	webclient/client.go:126	2019-08-02 06:23:38.671678 +0800 CST m=+0.004252696	{"key": "Content-Type", "value": "application/json; charset=utf-8"}
2019-08-02T06:23:38.671+0800	DEBUG	FastGet	webclient/client.go:126	2019-08-02 06:23:38.671678 +0800 CST m=+0.004252696	{"key": "User-Agent", "value": "testAgent"}
2019-08-02T06:23:38.672+0800	DEBUG	FastGet	webclient/client.go:126	2019-08-02 06:23:38.671678 +0800 CST m=+0.004252696	{"key": "Transactionid", "value": "2019-08-02 06:23:38.671678 +0800 CST m=+0.004252696"}
2019-08-02T06:23:38.672+0800	DEBUG	FastGet	webclient/client.go:126	2019-08-02 06:23:38.671678 +0800 CST m=+0.004252696	{"key": "Accept", "value": "application/json"}
2019-08-02T06:23:38.672+0800	DEBUG	FastGet	webclient/client.go:126	2019-08-02 06:23:38.671678 +0800 CST m=+0.004252696	{"key": "Authorization", "value": "Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJleHAiOjE1OTY2NzIwMDAsInJvbGUiOiJ0ZXJtaW5hbF9hcGsiLCJzdGF0dXMiOiJhY3RpdmUiLCJ1c2VyX2lkIjoiNTBjNjg5MTAtNjEyYi00NjMzLTk2YjktNTA3NzhjNDViNTAwIn0.l1JHnOL85s3ajto0MKs-D6paW1YxpaMuxA0nzI0Xlfk"}
2019-08-02T06:23:38.672+0800	DEBUG	FastGet	webclient/client.go:128	2019-08-02 06:23:38.671678 +0800 CST m=+0.004252696
2019-08-02T06:23:38.676+0800	DEBUG	FastGet	webclient/client.go:142	2019-08-02 06:23:38.671678 +0800 CST m=+0.004252696	{"elapsed": "4.627531ms"}
2019-08-02T06:23:38.676+0800	DEBUG	FastGet	webclient/client.go:143	2019-08-02 06:23:38.671678 +0800 CST m=+0.004252696	{"http status code": 200}
2019-08-02T06:23:38.676+0800	DEBUG	FastGet	webclient/client.go:145	2019-08-02 06:23:38.671678 +0800 CST m=+0.004252696	{"key": "Content-Length", "value": "275"}
2019-08-02T06:23:38.676+0800	DEBUG	FastGet	webclient/client.go:145	2019-08-02 06:23:38.671678 +0800 CST m=+0.004252696	{"key": "Content-Type", "value": "application/vnd.pgrst.object+json; charset=utf-8"}
2019-08-02T06:23:38.676+0800	DEBUG	FastGet	webclient/client.go:145	2019-08-02 06:23:38.671678 +0800 CST m=+0.004252696	{"key": "Server", "value": "EPG-xcache-service"}
2019-08-02T06:23:38.676+0800	DEBUG	FastGet	webclient/client.go:145	2019-08-02 06:23:38.671678 +0800 CST m=+0.004252696	{"key": "Date", "value": "Thu, 01 Aug 2019 22:23:37 GMT"}
2019-08-02T06:23:38.676+0800	DEBUG	FastGet	webclient/client.go:147	2019-08-02 06:23:38.671678 +0800 CST m=+0.004252696	{"http payload": "{\"id\":2101127497763529765,\"plan_start_date\":\"2019-07-29\",\"plan_end_date\":\"2019-02-12\",\"actual_start_date\":\"2019-07-29\",\"actual_end_date\":\"2019-07-29\",\"is_done\":false,\"last_updated\":\"2019-08-01T14:12:17.983236\",\"is_deleted\":false,\"user_id\":2098735545843717147,\"title\":\"00002\"}"}
"{\"id\":2101127497763529765,\"plan_start_date\":\"2019-07-29\",\"plan_end_date\":\"2019-02-12\",\"actual_start_date\":\"2019-07-29\",\"actual_end_date\":\"2019-07-29\",\"is_done\":false,\"last_updated\":\"2019-08-01T14:12:17.983236\",\"is_deleted\":false,\"user_id\":2098735545843717147,\"title\":\"00002\"}"
2019-08-02T06:23:38.677+0800	DEBUG	FastPostByte	webclient/client.go:71	2019-08-02 06:23:38.677108 +0800 CST m=+0.009682961	{"key": "Content-Type", "value": "application/json; charset=utf-8"}
2019-08-02T06:23:38.677+0800	DEBUG	FastPostByte	webclient/client.go:71	2019-08-02 06:23:38.677108 +0800 CST m=+0.009682961	{"key": "User-Agent", "value": "testAgent"}
2019-08-02T06:23:38.677+0800	DEBUG	FastPostByte	webclient/client.go:71	2019-08-02 06:23:38.677108 +0800 CST m=+0.009682961	{"key": "Transactionid", "value": "2019-08-02 06:23:38.677108 +0800 CST m=+0.009682961"}
2019-08-02T06:23:38.677+0800	DEBUG	FastPostByte	webclient/client.go:71	2019-08-02 06:23:38.677108 +0800 CST m=+0.009682961	{"key": "Accept", "value": "application/vnd.pgrst.object+json"}
2019-08-02T06:23:38.677+0800	DEBUG	FastPostByte	webclient/client.go:73	2019-08-02 06:23:38.677108 +0800 CST m=+0.009682961
2019-08-02T06:23:38.678+0800	DEBUG	FastPostByte	webclient/client.go:87	2019-08-02 06:23:38.677108 +0800 CST m=+0.009682961	{"elapsed": "1.19083ms"}
2019-08-02T06:23:38.678+0800	DEBUG	FastPostByte	webclient/client.go:88	2019-08-02 06:23:38.677108 +0800 CST m=+0.009682961	{"http status code": 200}
2019-08-02T06:23:38.678+0800	DEBUG	FastPostByte	webclient/client.go:90	2019-08-02 06:23:38.677108 +0800 CST m=+0.009682961	{"key": "Content-Length", "value": "275"}
2019-08-02T06:23:38.678+0800	DEBUG	FastPostByte	webclient/client.go:90	2019-08-02 06:23:38.677108 +0800 CST m=+0.009682961	{"key": "Content-Type", "value": "application/vnd.pgrst.object+json; charset=utf-8"}
2019-08-02T06:23:38.678+0800	DEBUG	FastPostByte	webclient/client.go:90	2019-08-02 06:23:38.677108 +0800 CST m=+0.009682961	{"key": "Server", "value": "EPG-xcache-service"}
2019-08-02T06:23:38.678+0800	DEBUG	FastPostByte	webclient/client.go:90	2019-08-02 06:23:38.677108 +0800 CST m=+0.009682961	{"key": "Date", "value": "Thu, 01 Aug 2019 22:23:37 GMT"}
2019-08-02T06:23:38.678+0800	DEBUG	FastPostByte	webclient/client.go:92	2019-08-02 06:23:38.677108 +0800 CST m=+0.009682961	{"http payload": "{\"id\":2101127497763529765,\"plan_start_date\":\"2019-07-29\",\"plan_end_date\":\"2019-02-12\",\"actual_start_date\":\"2019-07-29\",\"actual_end_date\":\"2019-07-29\",\"is_done\":false,\"last_updated\":\"2019-08-01T14:12:17.983236\",\"is_deleted\":false,\"user_id\":2098735545843717147,\"title\":\"00002\"}"}
"{\"id\":2101127497763529765,\"plan_start_date\":\"2019-07-29\",\"plan_end_date\":\"2019-02-12\",\"actual_start_date\":\"2019-07-29\",\"actual_end_date\":\"2019-07-29\",\"is_done\":false,\"last_updated\":\"2019-08-01T14:12:17.983236\",\"is_deleted\":false,\"user_id\":2098735545843717147,\"title\":\"00002\"}"

server side

----- fasthttp server starting -----
2019-08-02T06:23:38.675+0800	DEBUG	4294967297	webserver/testHandler.go:15	simpleGetHandler
2019-08-02T06:23:38.675+0800	DEBUG	4294967297	webserver/testHandler.go:19	4294967297	{"request": "#0000000100000001 - 127.0.0.1:3001<->127.0.0.1:64674 - GET http://localhost:3001/get"}
2019-08-02T06:23:38.675+0800	DEBUG	4294967297	webserver/testHandler.go:22	4294967297	{"key": "Host", "value": "localhost:3001"}
2019-08-02T06:23:38.675+0800	DEBUG	4294967297	webserver/testHandler.go:22	4294967297	{"key": "Content-Length", "value": "0"}
2019-08-02T06:23:38.675+0800	DEBUG	4294967297	webserver/testHandler.go:22	4294967297	{"key": "Content-Type", "value": "application/json; charset=utf-8"}
2019-08-02T06:23:38.675+0800	DEBUG	4294967297	webserver/testHandler.go:22	4294967297	{"key": "User-Agent", "value": "testAgent"}
2019-08-02T06:23:38.675+0800	DEBUG	4294967297	webserver/testHandler.go:22	4294967297	{"key": "Transactionid", "value": "2019-08-02 06:23:38.671678 +0800 CST m=+0.004252696"}
2019-08-02T06:23:38.675+0800	DEBUG	4294967297	webserver/testHandler.go:22	4294967297	{"key": "Accept", "value": "application/json"}
2019-08-02T06:23:38.675+0800	DEBUG	4294967297	webserver/testHandler.go:22	4294967297	{"key": "Authorization", "value": "Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJleHAiOjE1OTY2NzIwMDAsInJvbGUiOiJ0ZXJtaW5hbF9hcGsiLCJzdGF0dXMiOiJhY3RpdmUiLCJ1c2VyX2lkIjoiNTBjNjg5MTAtNjEyYi00NjMzLTk2YjktNTA3NzhjNDViNTAwIn0.l1JHnOL85s3ajto0MKs-D6paW1YxpaMuxA0nzI0Xlfk"}
2019-08-02T06:23:38.676+0800	DEBUG	4294967297	webserver/testHandler.go:25	4294967297	{"http payload": ""}
2019-08-02T06:23:38.677+0800	DEBUG	4294967298	webserver/testHandler.go:42	simplePostHandler
2019-08-02T06:23:38.677+0800	DEBUG	4294967298	webserver/testHandler.go:46	4294967298	{"request": "#0000000100000002 - 127.0.0.1:3001<->127.0.0.1:64674 - POST http://localhost:3001/post"}
2019-08-02T06:23:38.677+0800	DEBUG	4294967298	webserver/testHandler.go:50	4294967298	{"key": "Host", "value": "localhost:3001"}
2019-08-02T06:23:38.677+0800	DEBUG	4294967298	webserver/testHandler.go:50	4294967298	{"key": "Content-Length", "value": "183"}
2019-08-02T06:23:38.677+0800	DEBUG	4294967298	webserver/testHandler.go:50	4294967298	{"key": "Content-Type", "value": "application/json; charset=utf-8"}
2019-08-02T06:23:38.677+0800	DEBUG	4294967298	webserver/testHandler.go:50	4294967298	{"key": "User-Agent", "value": "testAgent"}
2019-08-02T06:23:38.677+0800	DEBUG	4294967298	webserver/testHandler.go:50	4294967298	{"key": "Transactionid", "value": "2019-08-02 06:23:38.677108 +0800 CST m=+0.009682961"}
2019-08-02T06:23:38.677+0800	DEBUG	4294967298	webserver/testHandler.go:50	4294967298	{"key": "Accept", "value": "application/vnd.pgrst.object+json"}
2019-08-02T06:23:38.677+0800	DEBUG	4294967298	webserver/testHandler.go:53	4294967298	{"http payload": "{\"actual_start_date\":\"2019-07-29\",\"actual_end_date\":\"2019-07-29\",\"plan_start_date\":\"2019-07-29\",\"plan_end_date\":\"2019-02-12\",\"title\":\"养殖计划00002\",\"user_id\":2098735545843717147}"}

4. How to Unit Testing

4.1 simple handler testing ( fasthttp hadler as function)

define handler as a function

func helloWorldGetHandler() func(ctx *fasthttp.RequestCtx) {
	return func(ctx *fasthttp.RequestCtx) {
		tid := strconv.FormatInt(int64(ctx.ID()), 10)

		ctx.Request.Header.Add("tid", tid)
		ctx.SetContentType(ContentText)
		ctx.SetStatusCode(200)
		ctx.SetBody([]byte(`hello world`))
		return
	}
}

the unit testing code here

func TestHello(t *testing.T) {
	
	// setup fasthttp server 
    addr := ":3000"
    s := &fasthttp.Server{
        Handler: helloWorldGetHandler(),
    }
    // setup listener 
    ln, _ := reuseport.Listen("tcp4", addr)

    // remember to close listener 
    defer func() {
        _ = ln.Close()
    }()
    
    // now running fasthttp server in a goroutine 

    go func() {
        _ = s.Serve(ln)
    }()

    // -------------------------------------------------------
    // now, the real http client what you want
	// -------------------------------------------------------

    c := &fasthttp.HostClient{
        Addr: "localhost:3000",
    }

    // http client Fetch the testing fasthttp server  via local proxy.
    statusCode, body, err := c.Get(nil, "http://google.com/hello")
    assert.NoError(t, err)
    assert.Equal(t, statusCode, 200)
    assert.Equal(t, body, []byte(`hello world`))
}

4.2 simple handler testing ( fasthttp hadler as method )

juse like 4.1 but in method mode

func (ws *webServer) helloWorldGetHandler() func(ctx *fasthttp.RequestCtx) {
	return func(ctx *fasthttp.RequestCtx) {
		tid := strconv.FormatInt(int64(ctx.ID()), 10)
		log := ws.Log.Named(tid)
		log.Debug("helloWorldGetHandler")

		if ws.debug {
			ctx.Request.Header.VisitAll(func(key, value []byte) {
				// log.Info("requestHeader", zap.String("key", gotils.B2S(key)), zap.String("value", gotils.B2S(value)))
				log.Debug(tid, zap.String("key", goutils.B2S(key)), zap.String("value", goutils.B2S(value)))
			})

			log.Debug(tid, zap.String("http payload", goutils.B2S(ctx.Request.Body())))

		}

		ctx.SetContentType(ContentText)
		ctx.SetStatusCode(200)
		ctx.SetBody([]byte(`hello world`))
		return
	}
}

and

unit testing


func TestWebServer_hello(t *testing.T) {

    // setup logger that output to console
    log := logger.Console()
    ws := &webServer{
        Addr:  ":3000",
        Log:   log,
        debug: true,
    }
    // setup fasthttp logger

    flog := logger.InitZapLogger(ws.Log)

    // setup fasthttp server

    s := &fasthttp.Server{
        Handler: ws.helloWorldGetHandler(),
        Logger:  flog,
    }

    // setup listener
    ln, _ := reuseport.Listen("tcp4", ws.Addr)

    // remember to close listener
    defer func() {
        _ = ln.Close()
    }()

    // now running fasthttp server in a goroutine

    go func() {
        _ = s.Serve(ln)
    }()

    // -------------------------------------------------------
    // now, the real http client what you want
    // -------------------------------------------------------

    c := &fasthttp.HostClient{
        Addr: "localhost:3000",
    }

    // http client Fetch the testing fasthttp server  via local proxy.
    statusCode, body, err := c.Get(nil, "http://google.com/hello")
    assert.NoError(t, err)
    assert.Equal(t, statusCode, 200)
    assert.Equal(t, body, []byte(`hello world`))
}

4.3 run test

/go/src/github.com/tsingson/fasthttp-example/webserver   go test -v .
=== RUN   TestWebServer_hello
2019-10-26T19:25:15.197+0800	DEBUG	4294967297	helloWorldGetHandler
2019-10-26T19:25:15.197+0800	DEBUG	4294967297	4294967297	{"key": "Host", "value": "google.com"}
2019-10-26T19:25:15.197+0800	DEBUG	4294967297	4294967297	{"key": "Content-Length", "value": "0"}
2019-10-26T19:25:15.197+0800	DEBUG	4294967297	4294967297	{"key": "User-Agent", "value": "fasthttp"}
2019-10-26T19:25:15.197+0800	DEBUG	4294967297	4294967297	{"http payload": ""}
--- PASS: TestWebServer_hello (0.00s)
=== RUN   TestHello
--- PASS: TestHello (0.00s)
PASS
ok  	github.com/tsingson/fasthttp-example/webserver	0.015s

cool, just try it by yourself.

5. license

MIT

by tsingson 2019

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step by step to build web application via fasthttp

tsingson.github.io

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middleware web-server zap websocket flatbuffers web-client fasthttp

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