diff --git a/sentinel-dashboard/src/main/java/com/alibaba/csp/sentinel/dashboard/controller/v2/FlowControllerV2.java b/sentinel-dashboard/src/main/java/com/alibaba/csp/sentinel/dashboard/controller/v2/FlowControllerV2.java
index 90a022a2..cf85e4ea 100755
--- a/sentinel-dashboard/src/main/java/com/alibaba/csp/sentinel/dashboard/controller/v2/FlowControllerV2.java
+++ b/sentinel-dashboard/src/main/java/com/alibaba/csp/sentinel/dashboard/controller/v2/FlowControllerV2.java
@@ -70,7 +70,7 @@ public class FlowControllerV2 {
     @GetMapping("/rules")
     @AuthAction(PrivilegeType.READ_RULE)
     public Result<List<FlowRuleEntity>> apiQueryMachineRules(@RequestParam String app) {
-
+        System.out.println("FlowControllerV2 apiQueryMachineRules app is " + app);
         if (StringUtil.isEmpty(app)) {
             return Result.ofFail(-1, "app can't be null or empty");
         }
@@ -163,8 +163,7 @@ public class FlowControllerV2 {
     @PutMapping("/rule/{id}")
     @AuthAction(AuthService.PrivilegeType.WRITE_RULE)
 
-    public Result<FlowRuleEntity> apiUpdateFlowRule(@PathVariable("id") Long id,
-                                                    @RequestBody FlowRuleEntity entity) {
+    public Result<FlowRuleEntity> apiUpdateFlowRule(@PathVariable("id") Long id, @RequestBody FlowRuleEntity entity) {
         if (id == null || id <= 0) {
             return Result.ofFail(-1, "Invalid id");
         }
diff --git a/sentinel-dashboard/src/main/java/com/alibaba/csp/sentinel/dashboard/discovery/SimpleMachineDiscovery.java b/sentinel-dashboard/src/main/java/com/alibaba/csp/sentinel/dashboard/discovery/SimpleMachineDiscovery.java
index 140cfcd7..e14f92b1 100755
--- a/sentinel-dashboard/src/main/java/com/alibaba/csp/sentinel/dashboard/discovery/SimpleMachineDiscovery.java
+++ b/sentinel-dashboard/src/main/java/com/alibaba/csp/sentinel/dashboard/discovery/SimpleMachineDiscovery.java
@@ -42,6 +42,7 @@ public class SimpleMachineDiscovery implements MachineDiscovery {
 
     @Override
     public long addMachine(MachineInfo machineInfo) {
+        logger.info("SimpleMachineDiscovery addMachine");
         AssertUtil.notNull(machineInfo, "machineInfo cannot be null");
         AppInfo appInfo = apps.computeIfAbsent(machineInfo.getApp(), o -> new AppInfo(machineInfo.getApp(), machineInfo.getAppType()));
         appInfo.addMachine(machineInfo);
diff --git a/sentinel-dashboard/src/main/java/com/alibaba/csp/sentinel/dashboard/rule/nacos/FlowRuleNacosProvider.java b/sentinel-dashboard/src/main/java/com/alibaba/csp/sentinel/dashboard/rule/nacos/FlowRuleNacosProvider.java
index 54405af3..a63d3f6b 100644
--- a/sentinel-dashboard/src/main/java/com/alibaba/csp/sentinel/dashboard/rule/nacos/FlowRuleNacosProvider.java
+++ b/sentinel-dashboard/src/main/java/com/alibaba/csp/sentinel/dashboard/rule/nacos/FlowRuleNacosProvider.java
@@ -20,6 +20,8 @@ import com.alibaba.csp.sentinel.dashboard.datasource.entity.rule.FlowRuleEntity;
 import com.alibaba.csp.sentinel.dashboard.rule.DynamicRuleProvider;
 import com.alibaba.csp.sentinel.datasource.Converter;
 import com.alibaba.nacos.api.config.ConfigService;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.beans.factory.annotation.Qualifier;
 import org.springframework.stereotype.Service;
@@ -33,6 +35,8 @@ import java.util.List;
 @Service
 public class FlowRuleNacosProvider implements DynamicRuleProvider<List<FlowRuleEntity>> {
 
+    @Autowired
+    private static Logger logger = LoggerFactory.getLogger(FlowRuleNacosProvider.class);
     @Autowired
     @Qualifier("nacosConfiguration")
     private ConfigService nacosConfiguration;
@@ -43,6 +47,7 @@ public class FlowRuleNacosProvider implements DynamicRuleProvider<List<FlowRuleE
 
     @Override
     public List<FlowRuleEntity> getRules(String appName) throws Exception {
+    logger.info("FlowRuleNacosProvider getRules [appName] " + appName);
         String dataId=new StringBuilder(appName).append(NacosConstants.DATA_ID_POSTFIX).toString();
         String rules = nacosConfiguration.getConfig(dataId,nacosProperties.getGroupId(),3000);
         //log.info("pull FlowRule from nacos Config:"+rules);
diff --git a/sentinel-dashboard/src/main/java/com/alibaba/csp/sentinel/dashboard/rule/nacos/FlowRuleNacosPublisher.java b/sentinel-dashboard/src/main/java/com/alibaba/csp/sentinel/dashboard/rule/nacos/FlowRuleNacosPublisher.java
index 7938be99..99d26798 100644
--- a/sentinel-dashboard/src/main/java/com/alibaba/csp/sentinel/dashboard/rule/nacos/FlowRuleNacosPublisher.java
+++ b/sentinel-dashboard/src/main/java/com/alibaba/csp/sentinel/dashboard/rule/nacos/FlowRuleNacosPublisher.java
@@ -21,6 +21,8 @@ import com.alibaba.csp.sentinel.dashboard.rule.DynamicRulePublisher;
 import com.alibaba.csp.sentinel.datasource.Converter;
 import com.alibaba.csp.sentinel.util.AssertUtil;
 import com.alibaba.nacos.api.config.ConfigService;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.beans.factory.annotation.Qualifier;
 import org.springframework.stereotype.Service;
@@ -33,6 +35,8 @@ import java.util.List;
 @Service
 public class FlowRuleNacosPublisher implements DynamicRulePublisher<List<FlowRuleEntity>> {
 
+    @Autowired
+    private static Logger logger = LoggerFactory.getLogger(FlowRuleNacosPublisher.class);
     @Autowired
     @Qualifier("nacosConfiguration")
     private ConfigService nacosConfiguration;
@@ -44,6 +48,7 @@ public class FlowRuleNacosPublisher implements DynamicRulePublisher<List<FlowRul
     @Override
     public void publish(String appName, List<FlowRuleEntity> rules) throws Exception {
 
+        logger.info("FlowRuleNacosPublisher publish [appName] " + appName);
         AssertUtil.notEmpty(appName, "appName不能为空");
         if(rules == null) {
             return;