diff --git a/src/main/java/org/redkale/boot/Application.java b/src/main/java/org/redkale/boot/Application.java
index 887bd901c..2d40ce8f4 100644
--- a/src/main/java/org/redkale/boot/Application.java
+++ b/src/main/java/org/redkale/boot/Application.java
@@ -96,27 +96,12 @@ public final class Application {
      */
     public static final String RESNAME_APP_EXECUTOR = "APP_EXECUTOR";
 
-    /**
-     * 当前进程的客共享AsyncGroup, 有且只有一个server节点NodeServer此字段值才有效
-     *
-     * @since 2.8.0
-     */
-    public static final String RESNAME_APP_GLOBAL_IOGROUP = "APP_GLOBAL_IOGROUP";
-
-    /**
-     * 当前进程的客户端组， 类型：AsyncGroup
-     *
-     * @since 2.8.0
-     */
-    public static final String RESNAME_APP_CLIENT_IOGROUP = "APP_CLIENT_IOGROUP";
-
     /**
      * 使用RESNAME_APP_CLIENT_IOGROUP代替
      *
      * @since 2.3.0
      *
      */
-    @Deprecated(since = "2.8.0")
     public static final String RESNAME_APP_CLIENT_ASYNCGROUP = "APP_CLIENT_ASYNCGROUP";
 
     /**
@@ -178,9 +163,6 @@ public final class Application {
     //配置项里的group信息, 注意： 只给SNCP使用
     private final SncpRpcGroups sncpRpcGroups = new SncpRpcGroups();
 
-    //
-    private final AsyncIOGroup globalAsyncGroup;
-
     //给客户端使用，包含SNCP客户端、自定义数据库客户端连接池
     private final AsyncIOGroup clientAsyncGroup;
 
@@ -589,14 +571,7 @@ public final class Application {
         this.workExecutor = workExecutor0;
         this.resourceFactory.register(RESNAME_APP_EXECUTOR, Executor.class, this.workExecutor);
         this.resourceFactory.register(RESNAME_APP_EXECUTOR, ExecutorService.class, this.workExecutor);
-
-        if (config.getAnyValues("server").length < 2) { //只存在一个server节点
-            this.globalAsyncGroup = new AsyncIOGroup("Redkale-Global-IOThread-%s", workExecutor, bufferCapacity, bufferPoolSize).skipClose(true);
-            this.resourceFactory.register(RESNAME_APP_GLOBAL_IOGROUP, AsyncGroup.class, this.globalAsyncGroup);
-            this.resourceFactory.register(RESNAME_APP_GLOBAL_IOGROUP, AsyncIOGroup.class, this.globalAsyncGroup);
-            this.clientAsyncGroup = this.globalAsyncGroup;
-        } else {
-            this.globalAsyncGroup = null;
+        {
             ExecutorService clientExecutor = workExecutor0;
             if (clientExecutor == null) {
                 //给所有client给一个默认的ExecutorService
@@ -604,9 +579,8 @@ public final class Application {
             }
             this.clientAsyncGroup = new AsyncIOGroup("Redkale-DefaultClient-IOThread-%s", clientExecutor, bufferCapacity, bufferPoolSize).skipClose(true);
         }
-        this.resourceFactory.register(RESNAME_APP_CLIENT_IOGROUP, AsyncGroup.class, this.clientAsyncGroup);
-        this.resourceFactory.register(RESNAME_APP_CLIENT_IOGROUP, AsyncIOGroup.class, this.clientAsyncGroup);
         this.resourceFactory.register(RESNAME_APP_CLIENT_ASYNCGROUP, AsyncGroup.class, this.clientAsyncGroup);
+        this.resourceFactory.register(RESNAME_APP_CLIENT_ASYNCGROUP, AsyncIOGroup.class, this.clientAsyncGroup);
 
         this.excludelibs = excludelib0;
         this.clusterAgent = cluster;
diff --git a/src/main/java/org/redkale/net/AsyncNioTcpProtocolServer.java b/src/main/java/org/redkale/net/AsyncNioTcpProtocolServer.java
index 3fa7cb2f1..e6b6d9188 100644
--- a/src/main/java/org/redkale/net/AsyncNioTcpProtocolServer.java
+++ b/src/main/java/org/redkale/net/AsyncNioTcpProtocolServer.java
@@ -12,9 +12,7 @@ import java.util.Set;
 import java.util.concurrent.atomic.LongAdder;
 import java.util.function.*;
 import java.util.logging.Level;
-import org.redkale.annotation.Resource;
 import org.redkale.boot.Application;
-import static org.redkale.boot.Application.RESNAME_APP_GLOBAL_IOGROUP;
 import org.redkale.util.*;
 
 /**
@@ -32,7 +30,6 @@ class AsyncNioTcpProtocolServer extends ProtocolServer {
 
     private Selector selector;
 
-    @Resource(name = RESNAME_APP_GLOBAL_IOGROUP, required = false)
     private AsyncIOGroup ioGroup;
 
     private Thread acceptThread;
diff --git a/src/main/java/org/redkale/net/AsyncNioUdpProtocolServer.java b/src/main/java/org/redkale/net/AsyncNioUdpProtocolServer.java
index f2de5aa07..93e14e31f 100644
--- a/src/main/java/org/redkale/net/AsyncNioUdpProtocolServer.java
+++ b/src/main/java/org/redkale/net/AsyncNioUdpProtocolServer.java
@@ -15,9 +15,7 @@ import java.util.concurrent.atomic.LongAdder;
 import java.util.concurrent.locks.ReentrantLock;
 import java.util.function.*;
 import java.util.logging.Level;
-import org.redkale.annotation.Resource;
 import org.redkale.boot.Application;
-import static org.redkale.boot.Application.RESNAME_APP_GLOBAL_IOGROUP;
 import org.redkale.util.*;
 
 /**
@@ -34,7 +32,6 @@ class AsyncNioUdpProtocolServer extends ProtocolServer {
 
     private Selector selector;
 
-    @Resource(name = RESNAME_APP_GLOBAL_IOGROUP, required = false)
     private AsyncIOGroup ioGroup;
 
     private Thread acceptThread;
diff --git a/src/main/java/org/redkale/net/client/Client.java b/src/main/java/org/redkale/net/client/Client.java
index 33824ffdf..b2f5c0df0 100644
--- a/src/main/java/org/redkale/net/client/Client.java
+++ b/src/main/java/org/redkale/net/client/Client.java
@@ -80,8 +80,6 @@ public abstract class Client<C extends ClientConnection<R, P>, R extends ClientR
 
     protected int writeTimeoutSeconds;
 
-    protected String connectionContextName;
-
     //------------------ 可选项 ------------------
     //PING心跳的请求数据，为null且pingInterval<1表示不需要定时ping
     protected Supplier<R> pingRequestSupplier;
diff --git a/src/main/java/org/redkale/source/AbstractDataSqlSource.java b/src/main/java/org/redkale/source/AbstractDataSqlSource.java
index f2bce2747..0512c56af 100644
--- a/src/main/java/org/redkale/source/AbstractDataSqlSource.java
+++ b/src/main/java/org/redkale/source/AbstractDataSqlSource.java
@@ -5,23 +5,23 @@
  */
 package org.redkale.source;
 
-import java.io.*;
+import java.io.Serializable;
 import java.math.*;
-import java.sql.*;
+import java.sql.SQLException;
 import java.util.*;
 import java.util.concurrent.*;
 import java.util.concurrent.atomic.*;
 import java.util.function.*;
 import java.util.logging.*;
-import java.util.stream.*;
+import java.util.stream.Stream;
 import org.redkale.annotation.AutoLoad;
 import org.redkale.annotation.*;
 import org.redkale.annotation.ResourceListener;
 import org.redkale.annotation.ResourceType;
 import static org.redkale.boot.Application.*;
-import org.redkale.net.*;
-import org.redkale.persistence.*;
-import org.redkale.service.*;
+import org.redkale.net.AsyncGroup;
+import org.redkale.persistence.Table;
+import org.redkale.service.Local;
 import org.redkale.source.EntityInfo.EntityColumn;
 import org.redkale.util.*;
 
@@ -59,7 +59,7 @@ public abstract class AbstractDataSqlSource extends AbstractDataSource implement
 
     protected Properties writeConfProps;
 
-    @Resource(name = RESNAME_APP_CLIENT_IOGROUP, required = false)
+    @Resource(name = RESNAME_APP_CLIENT_ASYNCGROUP, required = false)
     protected AsyncGroup clientAsyncGroup;
 
     //配置<executor threads="0"> APP_EXECUTOR资源为null