掌握Go语言网站访问速度调优的最佳实践方法

package main

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

func main() {
    numWorkers := 10
    urls := []string{"http://www.example.com", "http://www.sample.com", "http://www.test.com"}

    var wg sync.WaitGroup
    wg.Add(numWorkers)

    for i := 0; i < numWorkers; i++ {
        go func() {
            defer wg.Done()

            for _, url := range urls {
                resp, err := http.Get(url)
                if err != nil {
                    log.Println("Error:", err)
                    continue
                }
                defer resp.Body.Close()

                // TODO: 处理响应数据
            }
        }()
    }

    wg.Wait()
}

package main

import (
    "fmt"
    "sync"
    "sync/atomic"
    "time"
)

type Cache struct {
    data atomic.Value
    mu   sync.Mutex
}

func (c *Cache) Get() interface{} {
    return c.data.Load()
}

func (c *Cache) Set(value interface{}) {
    c.mu.Lock()
    defer c.mu.Unlock()
    c.data.Store(value)
}

func main() {
    c := &Cache{}

    go func() {
        for {
            // 模拟获取数据
            time.Sleep(1 * time.Second)
            data := fmt.Sprintf("Data from remote server at %s", time.Now().String())
            c.Set(data)
        }
    }()

    for i := 0; i < 5; i++ {
        time.Sleep(500 * time.Millisecond)
        fmt.Println("Data:", c.Get())
    }
}

package main

import (
    "database/sql"
    "fmt"
    _ "github.com/go-sql-driver/mysql"
    "sync"
)

var (
    pool *sql.DB
    mu   sync.Mutex
)

func main() {
    connStr := "root:password@tcp(127.0.0.1:3306)/test"
    pool, _ = sql.Open("mysql", connStr)
    defer pool.Close()

    queryDB("SELECT * FROM users")
}

func queryDB(query string) {
    mu.Lock()
    defer mu.Unlock()

    conn, _ := pool.Acquire()
    defer conn.Release()

    rows, _ := conn.Query(query)
    defer rows.Close()

    for rows.Next() {
        var id int
        var name string
        rows.Scan(&id, &name)
        fmt.Println("ID:", id, "Name:", name)
    }
}

package main

import (
    "log"
    "net/http"

    "golang.org/x/net/http2"
)

func main() {
    server := &http.Server{
        Addr: ":8080",
    }

    http2.ConfigureServer(server, nil)

    http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
        w.Write([]byte("Hello, World!"))
    })

    log.Fatal(server.ListenAndServeTLS("server.crt", "server.key"))
}