如何使用高效能演算法提升Go語言網站的存取速度？

package main

import (
    "sync"
    "time"
)

type Cache struct {
    mu      sync.Mutex
    data    map[string]interface{}
    timeout time.Duration
}

func NewCache(timeout time.Duration) *Cache {
    return &Cache{
        data:    make(map[string]interface{}),
        timeout: timeout,
    }
}

func (c *Cache) Get(key string) (interface{}, bool) {
    c.mu.Lock()
    defer c.mu.Unlock()

    value, ok := c.data[key]
    if !ok {
        return nil, false
    }

    // 判断是否超时
    if time.Now().Sub(value.(time.Time)) > c.timeout {
        delete(c.data, key)
        return nil, false
    }

    return value, true
}

func (c *Cache) Set(key string, value interface{}) {
    c.mu.Lock()
    defer c.mu.Unlock()

    c.data[key] = value
}

package main

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

func main() {
    results := make(chan string)
    var wg sync.WaitGroup

    urls := []string{"http://www.example.com", "http://www.google.com", "http://www.github.com"}

    for _, url := range urls {
        wg.Add(1)
        go func(url string) {
            defer wg.Done()
            resp, err := http.Get(url)
            if err != nil {
                results <- fmt.Sprintf("%s: %s", url, err.Error())
                return
            }
            defer resp.Body.Close()
            results <- fmt.Sprintf("%s: %s", url, resp.Status)
        }(url)
    }

    go func() {
        wg.Wait()
        close(results)
    }()

    for msg := range results {
        fmt.Println(msg)
    }
}

package main

import (
    "fmt"
    "net/http"
)

func main() {
    http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
        w.Header().Set("Cache-Control", "public, max-age=3600")
        w.Header().Set("Content-Encoding", "gzip")

        w.Write([]byte("Hello, World!"))
    })

    http.ListenAndServe(":8080", nil)
}