diff --git a/romac4j/src/main/java/com/rakuten/rit/roma/romac4j/AListPluginClient.java b/romac4j/src/main/java/com/rakuten/rit/roma/romac4j/AListPluginClient.java
index 0205269..8e2cc21 100644
--- a/romac4j/src/main/java/com/rakuten/rit/roma/romac4j/AListPluginClient.java
+++ b/romac4j/src/main/java/com/rakuten/rit/roma/romac4j/AListPluginClient.java
@@ -146,7 +146,7 @@ public int index(String key, String value) throws IOException {
     }
     
     public boolean insert(String key, int index, byte[] value) throws IOException {
-        return sendCmdS("alist_insert", key, "" + index + " " + value.length, value).isStored();
+        return sendCmdS("alist_insert", key, index + " " + value.length, value).isStored();
     }
 
     public boolean insert(String key, int index, String value) throws IOException {
@@ -156,7 +156,8 @@ public boolean insert(String key, int index, String value) throws IOException {
     public boolean sizedInsert(String key, int size, byte[] value)
             throws IOException {
         return sendCmdS("alist_sized_insert",
-                key, "" + size + " " + value.length, value).isStored();
+                key, size + " " + value.length, value).isStored();
+
     }
 
     public boolean sizedInsert(String key, int size, String value)
@@ -178,7 +179,7 @@ public boolean swapAndInsert(String key, String value)
     public boolean swapAndSizedInsert(String key, int size, byte[] value)
             throws IOException {
         return sendCmdS("alist_swap_and_sized_insert",
-                key, "" + size + " " + value.length, value).isStored();
+                key, size + " " + value.length, value).isStored();
     }
   
     public boolean swapAndSizedInsert(String key, int size, String value)
@@ -211,7 +212,7 @@ public boolean dayExpiredSwapAndInsert(String key, int dexpt, String value)
     public boolean expiredSwapAndInsert(String key, int expt, byte[] value)
             throws IOException {
         return sendCmdS("alist_expired_swap_and_insert",
-                key, "" + expt + " " + value.length, value).isStored();
+                key, expt + " " + value.length, value).isStored();
     }
 
     public boolean expiredSwapAndInsert(String key, int expt, String value)
@@ -244,7 +245,7 @@ public boolean dayExpiredSwapAndSizedInsert(
     public boolean expiredSwapAndSizedInsert(
             String key, int expt, int size, byte[] value) throws IOException {
         return sendCmdS("alist_expired_swap_and_sized_insert",
-                key, "" + expt + " " + size + " " + value.length, value).isStored();
+                key, expt + " " + size + " " + value.length, value).isStored();
     }
 
     public boolean expiredSwapAndSizedInsert(
@@ -310,7 +311,7 @@ public boolean push(String key, String value) throws IOException {
     public boolean sizedPush(String key, int size, byte[] value)
             throws IOException {
         return sendCmdS("alist_sized_push",
-                key, "" + size + " " + value.length, value).isStored();
+                key, size + " " + value.length, value).isStored();
     }
 
     public boolean sizedPush(String key, int size, String value)
@@ -330,7 +331,7 @@ public boolean swapAndPush(String key, String value) throws IOException {
     public boolean swapAndSizedPush(String key, int size, byte[] value)
             throws IOException {
         return sendCmdS("alist_swap_and_sized_push",
-                key, "" + size + " " + value.length, value).isStored();
+                key, size + " " + value.length, value).isStored();
     }
     
     public boolean swapAndSizedPush(String key, int size, String value)
@@ -341,7 +342,7 @@ public boolean swapAndSizedPush(String key, int size, String value)
     public boolean expiredSwapAndPush(String key, int expt, byte[] value)
             throws IOException {
         return sendCmdS("alist_expired_swap_and_push",
-                key, "" + expt + " " + value.length, value).isStored();
+                key, expt + " " + value.length, value).isStored();
     }
     
     public boolean expiredSwapAndPush(String key, int expt, String value)
@@ -352,7 +353,7 @@ public boolean expiredSwapAndPush(String key, int expt, String value)
     public boolean expiredSwapAndSizedPush(
             String key, int expt, int size, byte[] value) throws IOException {
         return sendCmdS("alist_expired_swap_and_sized_push",
-                key, "" + expt + " " + size + " " + value.length, value).isStored();
+                key, expt + " " + size + " " + value.length, value).isStored();
     }
    
     public boolean expiredSwapAndSizedPush(
@@ -362,7 +363,7 @@ public boolean expiredSwapAndSizedPush(
 
     public int updateAt(String key, int index, byte[] value)  throws IOException {
         String ret = sendCmdS("alist_update_at",
-                key, "" + index + " " + value.length, value).toString();
+                key, index + " " + value.length, value).toString();
         if(ret.equals("STORED")) return 1;
         else if(ret.equals("NOT_STORED")) return 0;
         else if(ret.equals("NOT_FOUND")) return -2;
diff --git a/romac4j/src/main/java/com/rakuten/rit/roma/romac4j/RomaClient.java b/romac4j/src/main/java/com/rakuten/rit/roma/romac4j/RomaClient.java
index d31ea09..32a64c3 100644
--- a/romac4j/src/main/java/com/rakuten/rit/roma/romac4j/RomaClient.java
+++ b/romac4j/src/main/java/com/rakuten/rit/roma/romac4j/RomaClient.java
@@ -5,7 +5,7 @@
 import java.text.ParseException;
 import java.util.HashMap;
 import java.util.Map;
-
+import com.rakuten.rit.roma.romac4j.connection.RomaSocketPool;
 import org.apache.log4j.Logger;
 
 public class RomaClient extends ClientObject {
@@ -19,6 +19,11 @@ public RomaClient(String nodeId) {
         super(nodeId);
     }
 
+
+    public void setTimeout(int timeout) {
+        RomaSocketPool.getInstance().setTimeout(timeout);
+    }
+
     public byte[] get(String key) throws IOException {
         return sendCmdV("get", key).getValue();
     }
diff --git a/romac4j/src/main/java/com/rakuten/rit/roma/romac4j/connection/RomaSocketPool.java b/romac4j/src/main/java/com/rakuten/rit/roma/romac4j/connection/RomaSocketPool.java
index 7a96504..7ba4501 100644
--- a/romac4j/src/main/java/com/rakuten/rit/roma/romac4j/connection/RomaSocketPool.java
+++ b/romac4j/src/main/java/com/rakuten/rit/roma/romac4j/connection/RomaSocketPool.java
@@ -101,4 +101,8 @@ public void returnConnection(Connection con) {
         log.info("returnConnection() : close connection");
         con.forceClose();
     }
+
+    public synchronized void setTimeout(int timeout) {
+        this.timeout = timeout;
+    }
 }
diff --git a/romac4j/src/main/java/com/rakuten/rit/roma/romac4j/routing/Routing.java b/romac4j/src/main/java/com/rakuten/rit/roma/romac4j/routing/Routing.java
index c4732f0..c902fdd 100644
--- a/romac4j/src/main/java/com/rakuten/rit/roma/romac4j/routing/Routing.java
+++ b/romac4j/src/main/java/com/rakuten/rit/roma/romac4j/routing/Routing.java
@@ -172,7 +172,8 @@ private String getMklHash() {
     private RoutingData getRoutingDump() {
         Connection con = null;
         RoutingData routingData = null;
-        Receiver rcv = new RoutingReceiver();
+
+        Receiver rcv = new RoutingReceiver(null);
         try {
             con = getConnection();
             con.write("routingdump bin");
@@ -194,7 +195,15 @@ private RoutingData getRoutingDump() {
     
     private class RoutingReceiver extends Receiver {
         private byte[] value = null;
-        
+
+        RoutingReceiver(){
+           this.value = null;
+        }
+
+        RoutingReceiver(RoutingReceiver routingReceiver){
+            this();
+        }
+
         @Override
         public void receive(Connection con) throws TimeoutException, IOException, ParseException {
             int len = 0;