diff --git a/sentinel-dashboard/src/main/java/com/taobao/csp/sentinel/dashboard/inmem/HttpHelper.java b/sentinel-dashboard/src/main/java/com/taobao/csp/sentinel/dashboard/client/SentinelApiClient.java
similarity index 96%
rename from sentinel-dashboard/src/main/java/com/taobao/csp/sentinel/dashboard/inmem/HttpHelper.java
rename to sentinel-dashboard/src/main/java/com/taobao/csp/sentinel/dashboard/client/SentinelApiClient.java
index bde4ebfb..3854fa83 100755
--- a/sentinel-dashboard/src/main/java/com/taobao/csp/sentinel/dashboard/inmem/HttpHelper.java
+++ b/sentinel-dashboard/src/main/java/com/taobao/csp/sentinel/dashboard/client/SentinelApiClient.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.taobao.csp.sentinel.dashboard.inmem;
+package com.taobao.csp.sentinel.dashboard.client;
 
 import java.io.UnsupportedEncodingException;
 import java.net.URLEncoder;
@@ -53,31 +53,31 @@ import org.springframework.stereotype.Component;
  * @author leyou
  */
 @Component
-public class HttpHelper {
+public class SentinelApiClient {
 
-    private static Logger logger = LoggerFactory.getLogger(HttpHelper.class);
+    private static Logger logger = LoggerFactory.getLogger(SentinelApiClient.class);
     private static final Charset defaultCharset = Charset.forName(SentinelConfig.charset());
 
-    private CloseableHttpAsyncClient httpclient;
+    private CloseableHttpAsyncClient httpClient;
+
     private final String resourceUrlPath = "jsonTree";
     private final String clusterNodePath = "clusterNode";
-
     private final String getRulesPath = "getRules";
     private final String setRulesPath = "setRules";
     private final String flowRuleType = "flow";
     private final String degradeRuleType = "degrade";
     private final String systemRuleType = "system";
 
-    public HttpHelper() {
+    public SentinelApiClient() {
         IOReactorConfig ioConfig = IOReactorConfig.custom().setConnectTimeout(3000).setSoTimeout(3000)
             .setIoThreadCount(Runtime.getRuntime().availableProcessors() * 2).build();
-        httpclient = HttpAsyncClients.custom().setRedirectStrategy(new DefaultRedirectStrategy() {
+        httpClient = HttpAsyncClients.custom().setRedirectStrategy(new DefaultRedirectStrategy() {
             @Override
             protected boolean isRedirectable(final String method) {
                 return false;
             }
         }).setMaxConnTotal(4000).setMaxConnPerRoute(1000).setDefaultIOReactorConfig(ioConfig).build();
-        httpclient.start();
+        httpClient.start();
     }
 
     public List<NodeVo> fetchResourceOfMachine(String ip, int port, String type) {
@@ -282,7 +282,7 @@ public class HttpHelper {
         final HttpGet httpGet = new HttpGet(url);
         final CountDownLatch latch = new CountDownLatch(1);
         final AtomicReference<String> reference = new AtomicReference<>();
-        httpclient.execute(httpGet, new FutureCallback<HttpResponse>() {
+        httpClient.execute(httpGet, new FutureCallback<HttpResponse>() {
             @Override
             public void completed(final HttpResponse response) {
                 try {
@@ -324,4 +324,7 @@ public class HttpHelper {
         return EntityUtils.toString(response.getEntity(), charset != null ? charset : defaultCharset);
     }
 
+    public void close() throws Exception {
+        httpClient.close();
+    }
 }
diff --git a/sentinel-dashboard/src/main/java/com/taobao/csp/sentinel/dashboard/inmem/InMemDegradeRuleStore.java b/sentinel-dashboard/src/main/java/com/taobao/csp/sentinel/dashboard/repository/rule/InMemDegradeRuleStore.java
similarity index 86%
rename from sentinel-dashboard/src/main/java/com/taobao/csp/sentinel/dashboard/inmem/InMemDegradeRuleStore.java
rename to sentinel-dashboard/src/main/java/com/taobao/csp/sentinel/dashboard/repository/rule/InMemDegradeRuleStore.java
index 549c47ae..17d3481e 100755
--- a/sentinel-dashboard/src/main/java/com/taobao/csp/sentinel/dashboard/inmem/InMemDegradeRuleStore.java
+++ b/sentinel-dashboard/src/main/java/com/taobao/csp/sentinel/dashboard/repository/rule/InMemDegradeRuleStore.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.taobao.csp.sentinel.dashboard.inmem;
+package com.taobao.csp.sentinel.dashboard.repository.rule;
 
 import java.util.concurrent.atomic.AtomicLong;
 
@@ -24,7 +24,7 @@ import org.springframework.stereotype.Component;
  * @author leyou
  */
 @Component
-public class InMemDegradeRuleStore extends InMemRepositoryAdapter<DegradeRuleEntity> {
+public class InMemDegradeRuleStore extends InMemoryRuleRepositoryAdapter<DegradeRuleEntity> {
 
     private static AtomicLong ids = new AtomicLong(0);
 
diff --git a/sentinel-dashboard/src/main/java/com/taobao/csp/sentinel/dashboard/inmem/InMemFlowRuleStore.java b/sentinel-dashboard/src/main/java/com/taobao/csp/sentinel/dashboard/repository/rule/InMemFlowRuleStore.java
similarity index 87%
rename from sentinel-dashboard/src/main/java/com/taobao/csp/sentinel/dashboard/inmem/InMemFlowRuleStore.java
rename to sentinel-dashboard/src/main/java/com/taobao/csp/sentinel/dashboard/repository/rule/InMemFlowRuleStore.java
index 220d64ef..1e1c5ec2 100755
--- a/sentinel-dashboard/src/main/java/com/taobao/csp/sentinel/dashboard/inmem/InMemFlowRuleStore.java
+++ b/sentinel-dashboard/src/main/java/com/taobao/csp/sentinel/dashboard/repository/rule/InMemFlowRuleStore.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.taobao.csp.sentinel.dashboard.inmem;
+package com.taobao.csp.sentinel.dashboard.repository.rule;
 
 import java.util.concurrent.atomic.AtomicLong;
 
@@ -26,7 +26,7 @@ import org.springframework.stereotype.Component;
  * @author leyou
  */
 @Component
-public class InMemFlowRuleStore extends InMemRepositoryAdapter<FlowRuleEntity> {
+public class InMemFlowRuleStore extends InMemoryRuleRepositoryAdapter<FlowRuleEntity> {
     private static AtomicLong ids = new AtomicLong(0);
 
     @Override
diff --git a/sentinel-dashboard/src/main/java/com/taobao/csp/sentinel/dashboard/inmem/InMemSystemRuleStore.java b/sentinel-dashboard/src/main/java/com/taobao/csp/sentinel/dashboard/repository/rule/InMemSystemRuleStore.java
similarity index 86%
rename from sentinel-dashboard/src/main/java/com/taobao/csp/sentinel/dashboard/inmem/InMemSystemRuleStore.java
rename to sentinel-dashboard/src/main/java/com/taobao/csp/sentinel/dashboard/repository/rule/InMemSystemRuleStore.java
index 1ed00bf3..eed207cf 100755
--- a/sentinel-dashboard/src/main/java/com/taobao/csp/sentinel/dashboard/inmem/InMemSystemRuleStore.java
+++ b/sentinel-dashboard/src/main/java/com/taobao/csp/sentinel/dashboard/repository/rule/InMemSystemRuleStore.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.taobao.csp.sentinel.dashboard.inmem;
+package com.taobao.csp.sentinel.dashboard.repository.rule;
 
 import java.util.concurrent.atomic.AtomicLong;
 
@@ -24,7 +24,7 @@ import org.springframework.stereotype.Component;
  * @author leyou
  */
 @Component
-public class InMemSystemRuleStore extends InMemRepositoryAdapter<SystemRuleEntity> {
+public class InMemSystemRuleStore extends InMemoryRuleRepositoryAdapter<SystemRuleEntity> {
 
     private static AtomicLong ids = new AtomicLong(0);
 
diff --git a/sentinel-dashboard/src/main/java/com/taobao/csp/sentinel/dashboard/inmem/InMemRepositoryAdapter.java b/sentinel-dashboard/src/main/java/com/taobao/csp/sentinel/dashboard/repository/rule/InMemoryRuleRepositoryAdapter.java
similarity index 94%
rename from sentinel-dashboard/src/main/java/com/taobao/csp/sentinel/dashboard/inmem/InMemRepositoryAdapter.java
rename to sentinel-dashboard/src/main/java/com/taobao/csp/sentinel/dashboard/repository/rule/InMemoryRuleRepositoryAdapter.java
index bd43bea8..ce9f143a 100755
--- a/sentinel-dashboard/src/main/java/com/taobao/csp/sentinel/dashboard/inmem/InMemRepositoryAdapter.java
+++ b/sentinel-dashboard/src/main/java/com/taobao/csp/sentinel/dashboard/repository/rule/InMemoryRuleRepositoryAdapter.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.taobao.csp.sentinel.dashboard.inmem;
+package com.taobao.csp.sentinel.dashboard.repository.rule;
 
 import java.util.ArrayList;
 import java.util.List;
@@ -27,7 +27,7 @@ import com.taobao.csp.sentinel.dashboard.discovery.MachineInfo;
 /**
  * @author leyou
  */
-public abstract class InMemRepositoryAdapter<T extends RuleEntity> implements RuleRepository<T, Long> {
+public abstract class InMemoryRuleRepositoryAdapter<T extends RuleEntity> implements RuleRepository<T, Long> {
     /**
      * {@code <machine, <id, rule>>}
      */
diff --git a/sentinel-dashboard/src/main/java/com/taobao/csp/sentinel/dashboard/inmem/RuleRepository.java b/sentinel-dashboard/src/main/java/com/taobao/csp/sentinel/dashboard/repository/rule/RuleRepository.java
similarity index 96%
rename from sentinel-dashboard/src/main/java/com/taobao/csp/sentinel/dashboard/inmem/RuleRepository.java
rename to sentinel-dashboard/src/main/java/com/taobao/csp/sentinel/dashboard/repository/rule/RuleRepository.java
index 65892087..cb50669f 100755
--- a/sentinel-dashboard/src/main/java/com/taobao/csp/sentinel/dashboard/inmem/RuleRepository.java
+++ b/sentinel-dashboard/src/main/java/com/taobao/csp/sentinel/dashboard/repository/rule/RuleRepository.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.taobao.csp.sentinel.dashboard.inmem;
+package com.taobao.csp.sentinel.dashboard.repository.rule;
 
 import java.util.List;
 
diff --git a/sentinel-dashboard/src/main/java/com/taobao/csp/sentinel/dashboard/view/DegradeController.java b/sentinel-dashboard/src/main/java/com/taobao/csp/sentinel/dashboard/view/DegradeController.java
index 2b526702..058fe0f9 100755
--- a/sentinel-dashboard/src/main/java/com/taobao/csp/sentinel/dashboard/view/DegradeController.java
+++ b/sentinel-dashboard/src/main/java/com/taobao/csp/sentinel/dashboard/view/DegradeController.java
@@ -22,8 +22,8 @@ import com.alibaba.csp.sentinel.util.StringUtil;
 
 import com.taobao.csp.sentinel.dashboard.datasource.entity.DegradeRuleEntity;
 import com.taobao.csp.sentinel.dashboard.discovery.MachineInfo;
-import com.taobao.csp.sentinel.dashboard.inmem.HttpHelper;
-import com.taobao.csp.sentinel.dashboard.inmem.InMemDegradeRuleStore;
+import com.taobao.csp.sentinel.dashboard.client.SentinelApiClient;
+import com.taobao.csp.sentinel.dashboard.repository.rule.InMemDegradeRuleStore;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Autowired;
@@ -42,7 +42,7 @@ public class DegradeController {
     @Autowired
     InMemDegradeRuleStore repository;
     @Autowired
-    private HttpHelper httpHelper;
+    private SentinelApiClient sentinelApiClient;
 
     @ResponseBody
     @RequestMapping("/rules.json")
@@ -57,7 +57,7 @@ public class DegradeController {
             return Result.ofFail(-1, "port can't be null");
         }
         try {
-            List<DegradeRuleEntity> rules = httpHelper.fetchDegradeRuleOfMachine(app, ip, port);
+            List<DegradeRuleEntity> rules = sentinelApiClient.fetchDegradeRuleOfMachine(app, ip, port);
             rules = repository.saveAll(rules);
             return Result.ofSuccess(rules);
         } catch (Throwable throwable) {
@@ -195,6 +195,6 @@ public class DegradeController {
 
     private boolean publishRules(String app, String ip, Integer port) {
         List<DegradeRuleEntity> rules = repository.findAllByMachine(MachineInfo.of(app, ip, port));
-        return httpHelper.setDegradeRuleOfMachine(app, ip, port, rules);
+        return sentinelApiClient.setDegradeRuleOfMachine(app, ip, port, rules);
     }
 }
diff --git a/sentinel-dashboard/src/main/java/com/taobao/csp/sentinel/dashboard/view/FlowController.java b/sentinel-dashboard/src/main/java/com/taobao/csp/sentinel/dashboard/view/FlowController.java
index 6aeaf305..cd761872 100755
--- a/sentinel-dashboard/src/main/java/com/taobao/csp/sentinel/dashboard/view/FlowController.java
+++ b/sentinel-dashboard/src/main/java/com/taobao/csp/sentinel/dashboard/view/FlowController.java
@@ -22,8 +22,8 @@ import com.alibaba.csp.sentinel.util.StringUtil;
 
 import com.taobao.csp.sentinel.dashboard.datasource.entity.FlowRuleEntity;
 import com.taobao.csp.sentinel.dashboard.discovery.MachineInfo;
-import com.taobao.csp.sentinel.dashboard.inmem.HttpHelper;
-import com.taobao.csp.sentinel.dashboard.inmem.InMemFlowRuleStore;
+import com.taobao.csp.sentinel.dashboard.client.SentinelApiClient;
+import com.taobao.csp.sentinel.dashboard.repository.rule.InMemFlowRuleStore;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Autowired;
@@ -45,7 +45,7 @@ public class FlowController {
     private InMemFlowRuleStore repository;
 
     @Autowired
-    private HttpHelper httpHelper;
+    private SentinelApiClient sentinelApiClient;
 
     @ResponseBody
     @RequestMapping("/rules.json")
@@ -60,7 +60,7 @@ public class FlowController {
             return Result.ofFail(-1, "port can't be null");
         }
         try {
-            List<FlowRuleEntity> rules = httpHelper.fetchFlowRuleOfMachine(app, ip, port);
+            List<FlowRuleEntity> rules = sentinelApiClient.fetchFlowRuleOfMachine(app, ip, port);
             rules = repository.saveAll(rules);
             return Result.ofSuccess(rules);
         } catch (Throwable throwable) {
@@ -244,6 +244,6 @@ public class FlowController {
 
     private boolean publishRules(String app, String ip, Integer port) {
         List<FlowRuleEntity> rules = repository.findAllByMachine(MachineInfo.of(app, ip, port));
-        return httpHelper.setFlowRuleOfMachine(app, ip, port, rules);
+        return sentinelApiClient.setFlowRuleOfMachine(app, ip, port, rules);
     }
 }
diff --git a/sentinel-dashboard/src/main/java/com/taobao/csp/sentinel/dashboard/view/ResourceController.java b/sentinel-dashboard/src/main/java/com/taobao/csp/sentinel/dashboard/view/ResourceController.java
index 44932775..a6e16cae 100755
--- a/sentinel-dashboard/src/main/java/com/taobao/csp/sentinel/dashboard/view/ResourceController.java
+++ b/sentinel-dashboard/src/main/java/com/taobao/csp/sentinel/dashboard/view/ResourceController.java
@@ -22,7 +22,7 @@ import com.alibaba.csp.sentinel.util.StringUtil;
 import com.alibaba.csp.sentinel.command.vo.NodeVo;
 
 import com.taobao.csp.sentinel.dashboard.domain.ResourceTreeNode;
-import com.taobao.csp.sentinel.dashboard.inmem.HttpHelper;
+import com.taobao.csp.sentinel.dashboard.client.SentinelApiClient;
 import com.taobao.csp.sentinel.dashboard.view.vo.ResourceVo;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -41,7 +41,7 @@ public class ResourceController {
 
     private static Logger logger = LoggerFactory.getLogger(ResourceController.class);
     @Autowired
-    HttpHelper httpFetcher;
+    SentinelApiClient httpFetcher;
 
     /**
      * Fetch real time statistics info of the machine.
diff --git a/sentinel-dashboard/src/main/java/com/taobao/csp/sentinel/dashboard/view/SystemController.java b/sentinel-dashboard/src/main/java/com/taobao/csp/sentinel/dashboard/view/SystemController.java
index d195fe00..20449a1d 100755
--- a/sentinel-dashboard/src/main/java/com/taobao/csp/sentinel/dashboard/view/SystemController.java
+++ b/sentinel-dashboard/src/main/java/com/taobao/csp/sentinel/dashboard/view/SystemController.java
@@ -22,8 +22,8 @@ import com.alibaba.csp.sentinel.util.StringUtil;
 
 import com.taobao.csp.sentinel.dashboard.datasource.entity.SystemRuleEntity;
 import com.taobao.csp.sentinel.dashboard.discovery.MachineInfo;
-import com.taobao.csp.sentinel.dashboard.inmem.HttpHelper;
-import com.taobao.csp.sentinel.dashboard.inmem.InMemSystemRuleStore;
+import com.taobao.csp.sentinel.dashboard.client.SentinelApiClient;
+import com.taobao.csp.sentinel.dashboard.repository.rule.InMemSystemRuleStore;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Autowired;
@@ -43,7 +43,7 @@ public class SystemController {
     @Autowired
     private InMemSystemRuleStore repository;
     @Autowired
-    private HttpHelper httpHelper;
+    private SentinelApiClient sentinelApiClient;
 
     @ResponseBody
     @RequestMapping("/rules.json")
@@ -58,7 +58,7 @@ public class SystemController {
             return Result.ofFail(-1, "port can't be null");
         }
         try {
-            List<SystemRuleEntity> rules = httpHelper.fetchSystemRuleOfMachine(app, ip, port);
+            List<SystemRuleEntity> rules = sentinelApiClient.fetchSystemRuleOfMachine(app, ip, port);
             rules = repository.saveAll(rules);
             return Result.ofSuccess(rules);
         } catch (Throwable throwable) {
@@ -209,6 +209,6 @@ public class SystemController {
 
     private boolean publishRules(String app, String ip, Integer port) {
         List<SystemRuleEntity> rules = repository.findAllByMachine(MachineInfo.of(app, ip, port));
-        return httpHelper.setSystemRuleOfMachine(app, ip, port, rules);
+        return sentinelApiClient.setSystemRuleOfMachine(app, ip, port, rules);
     }
 }