diff --git a/src/main/java/org/redkale/annotation/Async.java b/src/main/java/org/redkale/annotation/Async.java
deleted file mode 100644
index e74bbe1ef..000000000
--- a/src/main/java/org/redkale/annotation/Async.java
+++ /dev/null
@@ -1,23 +0,0 @@
-/*
- *
- */
-package org.redkale.annotation;
-
-import java.lang.annotation.*;
-
-/**
- * 异步模式标记。
- *
- * <p>
- * 详情见: https://redkale.org
- *
- * @author zhangjx
- *
- * @since 2.8.0
- */
-@Target({ElementType.TYPE, ElementType.METHOD})
-@Retention(RetentionPolicy.RUNTIME)
-public @interface Async {
-
-    boolean value() default true;
-}
diff --git a/src/main/java/org/redkale/annotation/NonBlocking.java b/src/main/java/org/redkale/annotation/NonBlocking.java
new file mode 100644
index 000000000..2fdf29dc3
--- /dev/null
+++ b/src/main/java/org/redkale/annotation/NonBlocking.java
@@ -0,0 +1,28 @@
+/*
+ *
+ */
+package org.redkale.annotation;
+
+import java.lang.annotation.*;
+
+/**
+ * 非阻塞模式标记， 标记在Service类和方法、Filter类、HttpServlet类上  <br>
+ * 一般情况下，没有显注此注解的方法视为阻塞时， 以下两种情况除外:  <br>
+ * 1、返回类型是CompletableFuture <br>
+ * 2、返回类型是void且参数存在CompletionHandler类型 <br>
+ * 阻塞模式的方法会在work线程池中运行， 非阻塞在IO线程中运行。
+ *
+ *
+ * <p>
+ * 详情见: https://redkale.org
+ *
+ * @author zhangjx
+ *
+ * @since 2.8.0
+ */
+@Target({ElementType.TYPE, ElementType.METHOD})
+@Retention(RetentionPolicy.RUNTIME)
+public @interface NonBlocking {
+
+    boolean value() default true;
+}
diff --git a/src/main/java/org/redkale/net/DispatcherServlet.java b/src/main/java/org/redkale/net/DispatcherServlet.java
index ccf8025ca..cc66d8c2c 100644
--- a/src/main/java/org/redkale/net/DispatcherServlet.java
+++ b/src/main/java/org/redkale/net/DispatcherServlet.java
@@ -12,7 +12,7 @@ import java.util.concurrent.locks.ReentrantLock;
 import java.util.function.Predicate;
 import java.util.logging.Level;
 import java.util.stream.Stream;
-import org.redkale.annotation.Async;
+import org.redkale.annotation.NonBlocking;
 import org.redkale.boot.Application;
 import org.redkale.util.*;
 
@@ -210,15 +210,15 @@ public abstract class DispatcherServlet<K extends Serializable, C extends Contex
         filtersLock.lock();
         try {
             this.filters.add(filter);
-            this.allFilterAsync = this.allFilterAsync && isAsync(filter);
+            this.allFilterAsync = this.allFilterAsync && isNonBlocking(filter);
             Collections.sort(this.filters);
         } finally {
             filtersLock.unlock();
         }
     }
 
-    private boolean isAsync(Filter filter) {
-        Async a = filter.getClass().getAnnotation(Async.class);
+    private boolean isNonBlocking(Filter filter) {
+        NonBlocking a = filter.getClass().getAnnotation(NonBlocking.class);
         return a != null && a.value();
     }
 
@@ -277,7 +277,7 @@ public abstract class DispatcherServlet<K extends Serializable, C extends Contex
                 this.filters.remove(filter);
                 boolean async = true;
                 for (Filter f : filters) {
-                    async = async && isAsync(filter);
+                    async = async && isNonBlocking(filter);
                     if (!async) {
                         break;
                     }
diff --git a/src/test/java/org/redkale/test/sncp/SncpTestServiceImpl.java b/src/test/java/org/redkale/test/sncp/SncpTestServiceImpl.java
index 8153e305f..e6b4b90d6 100644
--- a/src/test/java/org/redkale/test/sncp/SncpTestServiceImpl.java
+++ b/src/test/java/org/redkale/test/sncp/SncpTestServiceImpl.java
@@ -13,7 +13,7 @@ import org.redkale.annotation.ResourceType;
 import org.redkale.net.*;
 import org.redkale.net.sncp.*;
 import org.redkale.service.*;
-import org.redkale.util.*;
+import org.redkale.util.ResourceFactory;
 
 /**
  *
@@ -51,37 +51,6 @@ public class SncpTestServiceImpl implements SncpTestIService {
         return value + 1;
     }
 
-    public static class CallAttribute implements Attribute<SncpTestBean, Long> {
-
-        @Override
-        public Class<? extends Long> type() {
-            return long.class;
-        }
-
-        @Override
-        public Class<SncpTestBean> declaringClass() {
-            return SncpTestBean.class;
-        }
-
-        @Override
-        public String field() {
-            throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
-        }
-
-        @Override
-        public Long get(SncpTestBean obj) {
-            System.out.println("返回ID: " + obj.getId());
-            return obj.getId();
-        }
-
-        @Override
-        public void set(SncpTestBean obj, Long value) {
-            System.out.println("设置ID: " + value);
-            obj.setId(value);
-        }
-
-    }
-
     @Override
     public SncpTestBean insert(SncpTestBean bean) {
         bean.setId(System.currentTimeMillis());