diff --git a/src/main/java/org/redkale/net/client/ClientFuture.java b/src/main/java/org/redkale/net/client/ClientFuture.java
index 03286c2de..983d6fdd5 100644
--- a/src/main/java/org/redkale/net/client/ClientFuture.java
+++ b/src/main/java/org/redkale/net/client/ClientFuture.java
@@ -8,7 +8,6 @@ package org.redkale.net.client;
 import java.util.Objects;
 import java.util.concurrent.*;
 import org.redkale.annotation.Nonnull;
-import org.redkale.annotation.Nullable;
 import org.redkale.net.*;
 import org.redkale.util.Traces;
 
@@ -25,7 +24,7 @@ public class ClientFuture<R extends ClientRequest, T> extends CompletableFuture<
     @Nonnull
     protected final R request;
 
-    @Nullable
+    @Nonnull
     protected final ClientConnection conn;
 
     private ScheduledFuture timeout;
@@ -38,6 +37,7 @@ public class ClientFuture<R extends ClientRequest, T> extends CompletableFuture<
 
     ClientFuture(ClientConnection conn, R request) {
         super();
+        Objects.requireNonNull(conn);
         Objects.requireNonNull(request);
         this.conn = conn;
         this.request = request;
@@ -79,7 +79,7 @@ public class ClientFuture<R extends ClientRequest, T> extends CompletableFuture<
 
     private void runTimeout() {
         String traceid = request != null ? request.getTraceid() : null;
-        if (request != null && conn != null) {
+        if (request != null) {
             conn.removeRespFuture(request.getRequestid(), this);
         }
         TimeoutException ex = new TimeoutException("client-request: " + request);
@@ -88,26 +88,17 @@ public class ClientFuture<R extends ClientRequest, T> extends CompletableFuture<
             workThread = request.workThread;
             request.workThread = null;
         }
-        if (conn != null && (workThread == null || workThread.getWorkExecutor() == null)) {
+        if (workThread == null || workThread.getWorkExecutor() == null) {
             workThread = conn.getChannel().getReadIOThread();
         }
-        if (workThread == null) {
+        workThread.runWork(() -> {
             Traces.currentTraceid(traceid);
             if (!isDone()) {
                 completeExceptionally(ex);
             }
-        } else {
-            workThread.runWork(() -> {
-                Traces.currentTraceid(traceid);
-                if (!isDone()) {
-                    completeExceptionally(ex);
-                }
-                Traces.removeTraceid();
-            });
-        }
-        if (conn != null) {
-            conn.dispose(ex);
-        }
+            Traces.removeTraceid();
+        });
+        conn.dispose(ex);
     }
 
     @Override
diff --git a/src/main/java/org/redkale/net/client/ClientWriteThread.java b/src/main/java/org/redkale/net/client/ClientWriteThread.java
new file mode 100644
index 000000000..8028b0941
--- /dev/null
+++ b/src/main/java/org/redkale/net/client/ClientWriteThread.java
@@ -0,0 +1,71 @@
+/*
+
+*/
+
+package org.redkale.net.client;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Objects;
+import java.util.concurrent.LinkedBlockingQueue;
+
+/**
+ * 输出队列线程
+ *
+ * <p>详情见: https://redkale.org
+ *
+ * @author zhangjx
+ * @since 2.8.0
+ */
+public class ClientWriteThread extends Thread {
+
+    protected final LinkedBlockingQueue<ClientFuture> writeQueue = new LinkedBlockingQueue();
+
+    protected ClientWriteThread() {
+        // do nothing
+    }
+
+    public void offer(ClientFuture respFuture) {
+        this.writeQueue.add(Objects.requireNonNull(respFuture));
+    }
+
+    @Override
+    public void run() {
+        final List<ClientFuture> list = new ArrayList<>();
+        while (true) {
+            try {
+                ClientFuture respFuture = this.writeQueue.take();
+                if (respFuture == ClientFuture.NIL) {
+                    return;
+                }
+                boolean over = false;
+                list.clear();
+                list.add(respFuture);
+                ClientConnection conn = respFuture.conn;
+                int max = conn.getMaxPipelines();
+                while (--max > 0 && (respFuture = this.writeQueue.poll()) != null) {
+                    if (respFuture == ClientFuture.NIL) {
+                        over = true;
+                        break;
+                    } else if (respFuture.conn == conn) {
+                        list.add(respFuture);
+                    }
+                }
+                conn.sendRequestToChannel(list.toArray(new ClientFuture[list.size()]));
+                list.clear();
+                if (over) {
+                    return;
+                }
+            } catch (InterruptedException ie) {
+                break;
+            } catch (Throwable e) {
+                // do nothing
+            }
+        }
+    }
+
+    public void close() {
+        this.writeQueue.add(ClientFuture.NIL);
+        this.interrupt();
+    }
+}