add async method

writer.go

@@ -78,6 +78,15 @@ func (c *Conn) WritevAsync(opcode Opcode, payloads [][]byte, callback func(error
 	})
 }
 
+// Async 异步
+// 将任务加入发送队列(并发度为1), 执行异步操作
+// 注意: 不要加入长时间阻塞的任务
+// Add the task to the send queue (concurrency 1), perform asynchronous operation.
+// Note: Don't add tasks that are blocking for a long time.
+func (c *Conn) Async(f func()) {
+	c.writeQueue.Push(f)
+}
+
 // 执行写入逻辑, 注意妥善维护压缩字典
 func (c *Conn) doWrite(opcode Opcode, payload internal.Payload) error {
 	c.mu.Lock()

writer_test.go

@@ -489,3 +489,23 @@ func TestConn_Writev(t *testing.T) {
 		assert.Error(t, err)
 	})
 }
+
+func TestConn_Async(t *testing.T) {
+	var conn = &Conn{writeQueue: workerQueue{maxConcurrency: 1}}
+	var wg = sync.WaitGroup{}
+	wg.Add(100)
+	var arr1, arr2 []int64
+	var mu = &sync.Mutex{}
+	for i := 1; i <= 100; i++ {
+		var x = int64(i)
+		arr1 = append(arr1, x)
+		conn.Async(func() {
+			mu.Lock()
+			arr2 = append(arr2, x)
+			mu.Unlock()
+			wg.Done()
+		})
+	}
+	wg.Wait()
+	assert.ElementsMatch(t, arr1, arr2)
+}