快速优化Go语言网站访问速度的实用技巧总结

package main

import (
    "fmt"
    "net/http"
)

func main() {
    http.HandleFunc("/", handler)
    http.ListenAndServe(":8080", nil)
}

func handler(w http.ResponseWriter, r *http.Request) {
    go timeConsumingTask() // 使用goroutine处理耗时任务
    fmt.Fprintf(w, "Hello, World!")
}

func timeConsumingTask() {
    // 模拟一个耗时任务
    for i := 0; i < 1000000000; i++ {
        // do something
    }
}

package main

import (
    "fmt"
    "net/http"
    "sync"
)

var cache sync.Map

func main() {
    http.HandleFunc("/", handler)
    http.ListenAndServe(":8080", nil)
}

func handler(w http.ResponseWriter, r *http.Request) {
    if value, ok := cache.Load("data"); ok {
        fmt.Fprintf(w, "Cached data: %s", value)
    } else {
        data := fetchData() // 获取数据
        cache.Store("data", data) // 将数据存入缓存
        fmt.Fprintf(w, "Fetched data: %s", data)
    }
}

func fetchData() string {
    // 模拟获取数据的操作
    return "Lorem ipsum dolor sit amet"
}

package main

import (
    "compress/gzip"
    "fmt"
    "net/http"
    "strings"
)

type gzipResponseWriter struct {
    http.ResponseWriter
    *gzip.Writer
}

func (w gzipResponseWriter) Write(b []byte) (int, error) {
    return w.Writer.Write(b)
}

func main() {
    http.HandleFunc("/", handler)
    http.ListenAndServe(":8080", nil)
}

func handler(w http.ResponseWriter, r *http.Request) {
    if strings.Contains(r.Header.Get("Accept-Encoding"), "gzip") {
        w.Header().Set("Content-Encoding", "gzip")
        gzipWriter := gzip.NewWriter(w)
        defer gzipWriter.Close()
        gz := gzipResponseWriter{w, gzipWriter}
        fmt.Fprintf(gz, "Hello, World!")
    } else {
        fmt.Fprintf(w, "Hello, World!")
    }
}