实现基本的反向代理

internal/utils/time.go

@@ -0,0 +1,26 @@
+package utils
+
+import (
+	"time"
+)
+
+var unixTime = time.Now().Unix()
+var unixTimerIsReady = false
+
+func init() {
+	ticker := time.NewTicker(500 * time.Millisecond)
+	go func() {
+		for range ticker.C {
+			unixTimerIsReady = true
+			unixTime = time.Now().Unix()
+		}
+	}()
+}
+
+// 最快获取时间戳的方式，通常用在不需要特别精确时间戳的场景
+func UnixTime() int64 {
+	if unixTimerIsReady {
+		return unixTime
+	}
+	return time.Now().Unix()
+}

internal/utils/time_test.go

@@ -0,0 +1,13 @@
+package utils
+
+import (
+	"testing"
+	"time"
+)
+
+func TestUnixTime(t *testing.T) {
+	for i := 0; i < 5; i++ {
+		t.Log(UnixTime(), "real:", time.Now().Unix())
+		time.Sleep(1 * time.Second)
+	}
+}