diff --git a/src/main/java/org/redkale/cluster/CacheClusterAgent.java b/src/main/java/org/redkale/cluster/CacheClusterAgent.java
index e9d1f79c4..334a0df57 100644
--- a/src/main/java/org/redkale/cluster/CacheClusterAgent.java
+++ b/src/main/java/org/redkale/cluster/CacheClusterAgent.java
@@ -52,7 +52,7 @@ public class CacheClusterAgent extends ClusterAgent implements Resourcable {
         super.init(config);
         this.sourceName = getSourceName();
         this.ttls = config.getIntValue("ttls", 10);
-        if (this.ttls < 5) {
+        if (this.ttls < 5) { //值不能太小
             this.ttls = 10;
         }
     }
@@ -121,7 +121,7 @@ public class CacheClusterAgent extends ClusterAgent implements Resourcable {
         if (this.taskFuture != null) {
             this.taskFuture.cancel(true);
         }
-        this.taskFuture = this.scheduler.scheduleAtFixedRate(newTask(), Math.max(2000, ttls * 1000), Math.max(2000, ttls * 1000), TimeUnit.MILLISECONDS);
+        this.taskFuture = this.scheduler.scheduleAtFixedRate(newTask(), ttls, ttls, TimeUnit.SECONDS);
     }
 
     private Runnable newTask() {
@@ -208,15 +208,22 @@ public class CacheClusterAgent extends ClusterAgent implements Resourcable {
     }
 
     private CompletableFuture<Set<InetSocketAddress>> queryAddress(final String serviceName) {
-        final CompletableFuture<Map<String, AddressEntry>> future = source.hscanAsync(serviceName, AddressEntry.class, new AtomicLong(), 10000);
-        return future.thenApply(map -> {
-            final Set<InetSocketAddress> set = new HashSet<>();
+        return queryAddress0(serviceName, new HashSet<>(), new AtomicLong());
+    }
+
+    private CompletableFuture<Set<InetSocketAddress>> queryAddress0(final String serviceName, final Set<InetSocketAddress> set, final AtomicLong cursor) {
+        final CompletableFuture<Map<String, AddressEntry>> future = source.hscanAsync(serviceName, AddressEntry.class, cursor, 10000);
+        return future.thenCompose(map -> {
             map.forEach((n, v) -> {
                 if (v != null && (System.currentTimeMillis() - v.time) / 1000 < ttls) {
                     set.add(v.addr);
                 }
             });
-            return set;
+            if (cursor.get() == 0) {
+                return CompletableFuture.completedFuture(set);
+            } else {
+                return queryAddress0(serviceName, set, cursor);
+            }
         });
     }
 
diff --git a/src/main/java/org/redkale/cluster/HttpClusterRpcClient.java b/src/main/java/org/redkale/cluster/HttpClusterRpcClient.java
index 998ecc1e6..06cf987ed 100644
--- a/src/main/java/org/redkale/cluster/HttpClusterRpcClient.java
+++ b/src/main/java/org/redkale/cluster/HttpClusterRpcClient.java
@@ -18,7 +18,7 @@ import static org.redkale.util.Utility.isEmpty;
 import static org.redkale.util.Utility.isNotEmpty;
 
 /**
- * 没有配置MQ的情况下依赖ClusterAgent实现的默认HttpMessageClient实例
+ * 没有配置MQ的情况下依赖ClusterAgent实现的默认HttpRpcClient实例
  *
  * <p>
  * 详情见: https://redkale.org
diff --git a/src/main/java/org/redkale/cluster/HttpLocalRpcClient.java b/src/main/java/org/redkale/cluster/HttpLocalRpcClient.java
index eec8c3b73..398723761 100644
--- a/src/main/java/org/redkale/cluster/HttpLocalRpcClient.java
+++ b/src/main/java/org/redkale/cluster/HttpLocalRpcClient.java
@@ -63,6 +63,9 @@ public class HttpLocalRpcClient extends HttpRpcClient {
                     }
                 }
             }
+            if (nodeHttpServer == null) {
+                throw new HttpException("Not found HttpServer");
+            }
             this.currServer = nodeHttpServer.getServer();
         }
         return this.currServer;
diff --git a/src/main/java/org/redkale/net/sncp/SncpClient.java b/src/main/java/org/redkale/net/sncp/SncpClient.java
index 02acf6a35..21fac3085 100644
--- a/src/main/java/org/redkale/net/sncp/SncpClient.java
+++ b/src/main/java/org/redkale/net/sncp/SncpClient.java
@@ -27,12 +27,13 @@ public class SncpClient extends Client<SncpClientConnection, SncpClientRequest,
 
     final InetSocketAddress clientSncpAddress;
 
-    public SncpClient(String name, AsyncGroup group, int nodeid, InetSocketAddress clientSncpAddress, ClientAddress address, String netprotocol, int maxConns, int maxPipelines) {
+    public SncpClient(String name, AsyncGroup group, int nodeid,
+        InetSocketAddress clientSncpAddress, ClientAddress address, String netprotocol, int maxConns, int maxPipelines) {
         super(name, group, "TCP".equalsIgnoreCase(netprotocol), address, maxConns, maxPipelines, null, null, null); //maxConns
         this.clientSncpAddress = clientSncpAddress;
         this.nodeid = nodeid;
-        this.readTimeoutSeconds = 15;
-        this.writeTimeoutSeconds = 15;
+        this.readTimeoutSeconds = 10;
+        this.writeTimeoutSeconds = 10;
     }
 
     @Override
diff --git a/src/main/java/org/redkale/net/sncp/SncpHeader.java b/src/main/java/org/redkale/net/sncp/SncpHeader.java
index 0ba4a4933..1315f9703 100644
--- a/src/main/java/org/redkale/net/sncp/SncpHeader.java
+++ b/src/main/java/org/redkale/net/sncp/SncpHeader.java
@@ -21,8 +21,6 @@ public class SncpHeader {
 
     public static final byte KEEPALIVE_OFF = -1;
 
-    private static final byte[] EMPTY_ADDR = new byte[4];
-
     private Long seqid;
 
     private Uint128 serviceid;