diff --git a/joylive-core/joylive-governance-api/src/main/java/com/jd/live/agent/governance/invoke/metadata/LaneMetadata.java b/joylive-core/joylive-governance-api/src/main/java/com/jd/live/agent/governance/invoke/metadata/LaneMetadata.java
index 80e748af5..7ed6cc49b 100644
--- a/joylive-core/joylive-governance-api/src/main/java/com/jd/live/agent/governance/invoke/metadata/LaneMetadata.java
+++ b/joylive-core/joylive-governance-api/src/main/java/com/jd/live/agent/governance/invoke/metadata/LaneMetadata.java
@@ -5,12 +5,14 @@
 import com.jd.live.agent.governance.policy.lane.LaneSpace;
 import lombok.Builder;
 import lombok.Getter;
+import lombok.ToString;
 
 /**
  * The {@code LaneMetadata} class encapsulates the metadata for a lane request.
  */
 @Getter
 @Builder
+@ToString
 public class LaneMetadata {
 
     /**
diff --git a/joylive-core/joylive-governance-api/src/main/java/com/jd/live/agent/governance/invoke/ratelimit/AbstractRateLimiterGroup.java b/joylive-core/joylive-governance-api/src/main/java/com/jd/live/agent/governance/invoke/ratelimit/AbstractRateLimiterGroup.java
index 45adadc95..b82b9bee9 100644
--- a/joylive-core/joylive-governance-api/src/main/java/com/jd/live/agent/governance/invoke/ratelimit/AbstractRateLimiterGroup.java
+++ b/joylive-core/joylive-governance-api/src/main/java/com/jd/live/agent/governance/invoke/ratelimit/AbstractRateLimiterGroup.java
@@ -43,6 +43,13 @@ public abstract class AbstractRateLimiterGroup extends AbstractRateLimiter {
      */
     public AbstractRateLimiterGroup(RateLimitPolicy policy) {
         super(policy, TimeUnit.NANOSECONDS);
+    }
+
+    /**
+     * Initializes the rate limiter group by creating the individual rate limiters
+     * based on the sliding windows defined in the rate limit policy.
+     */
+    public void init() {
         int i = 0;
         for (SlidingWindow window : policy.getSlidingWindows()) {
             limiters.add(create(window, policy.getName() + "-" + i++));
diff --git a/joylive-core/joylive-governance-api/src/main/java/com/jd/live/agent/governance/invoke/ratelimit/leakybucket/LeakyBucketLimiterGroup.java b/joylive-core/joylive-governance-api/src/main/java/com/jd/live/agent/governance/invoke/ratelimit/leakybucket/LeakyBucketLimiterGroup.java
index 38e8eec07..e9a197340 100644
--- a/joylive-core/joylive-governance-api/src/main/java/com/jd/live/agent/governance/invoke/ratelimit/leakybucket/LeakyBucketLimiterGroup.java
+++ b/joylive-core/joylive-governance-api/src/main/java/com/jd/live/agent/governance/invoke/ratelimit/leakybucket/LeakyBucketLimiterGroup.java
@@ -29,6 +29,7 @@ public class LeakyBucketLimiterGroup extends AbstractRateLimiterGroup {
 
     public LeakyBucketLimiterGroup(RateLimitPolicy policy) {
         super(policy);
+        init();
     }
 
     @Override
diff --git a/joylive-core/joylive-governance-api/src/main/java/com/jd/live/agent/governance/invoke/ratelimit/tokenbucket/SmoothBurstyLimiterGroup.java b/joylive-core/joylive-governance-api/src/main/java/com/jd/live/agent/governance/invoke/ratelimit/tokenbucket/SmoothBurstyLimiterGroup.java
index d275b10de..f3bfa0371 100644
--- a/joylive-core/joylive-governance-api/src/main/java/com/jd/live/agent/governance/invoke/ratelimit/tokenbucket/SmoothBurstyLimiterGroup.java
+++ b/joylive-core/joylive-governance-api/src/main/java/com/jd/live/agent/governance/invoke/ratelimit/tokenbucket/SmoothBurstyLimiterGroup.java
@@ -29,6 +29,7 @@ public class SmoothBurstyLimiterGroup extends AbstractRateLimiterGroup {
 
     public SmoothBurstyLimiterGroup(RateLimitPolicy policy) {
         super(policy);
+        init();
     }
 
     @Override
diff --git a/joylive-core/joylive-governance-api/src/main/java/com/jd/live/agent/governance/invoke/ratelimit/tokenbucket/SmoothWarmupLimiterGroup.java b/joylive-core/joylive-governance-api/src/main/java/com/jd/live/agent/governance/invoke/ratelimit/tokenbucket/SmoothWarmupLimiterGroup.java
index 4b94e2872..c0152ae90 100644
--- a/joylive-core/joylive-governance-api/src/main/java/com/jd/live/agent/governance/invoke/ratelimit/tokenbucket/SmoothWarmupLimiterGroup.java
+++ b/joylive-core/joylive-governance-api/src/main/java/com/jd/live/agent/governance/invoke/ratelimit/tokenbucket/SmoothWarmupLimiterGroup.java
@@ -29,6 +29,7 @@ public class SmoothWarmupLimiterGroup extends AbstractRateLimiterGroup {
 
     public SmoothWarmupLimiterGroup(RateLimitPolicy policy) {
         super(policy);
+        init();
     }
 
     @Override
diff --git a/joylive-demo/joylive-demo-grpc/joylive-demo-grpc-consumer/src/main/java/com/jd/live/agent/demo/grpc/consumer/controller/UserServiceController.java b/joylive-demo/joylive-demo-grpc/joylive-demo-grpc-consumer/src/main/java/com/jd/live/agent/demo/grpc/consumer/controller/UserServiceController.java
index 80aab3f33..63deb1715 100644
--- a/joylive-demo/joylive-demo-grpc/joylive-demo-grpc-consumer/src/main/java/com/jd/live/agent/demo/grpc/consumer/controller/UserServiceController.java
+++ b/joylive-demo/joylive-demo-grpc/joylive-demo-grpc-consumer/src/main/java/com/jd/live/agent/demo/grpc/consumer/controller/UserServiceController.java
@@ -77,7 +77,13 @@ public String get(@RequestParam("id") Integer id, HttpServletRequest servletRequ
                 default:
                     servletResponse.setStatus(HttpStatus.INTERNAL_SERVER_ERROR.value());
             }
-            return status.getDescription();
+            return status.getDescription() == null ? "Unknown error" : status.getDescription();
+        } catch (IllegalStateException e) {
+            servletResponse.setStatus(HttpStatus.INTERNAL_SERVER_ERROR.value());
+            return e.getMessage();
+        } catch (Exception e) {
+            servletResponse.setStatus(HttpStatus.INTERNAL_SERVER_ERROR.value());
+            return e.getMessage();
         }
     }
 
diff --git a/joylive-demo/joylive-demo-grpc/joylive-demo-grpc-provider/src/main/java/com/jd/live/agent/demo/grpc/provider/service/UserServiceGrpcImpl.java b/joylive-demo/joylive-demo-grpc/joylive-demo-grpc-provider/src/main/java/com/jd/live/agent/demo/grpc/provider/service/UserServiceGrpcImpl.java
index 2d2fd02e2..3eccc4362 100644
--- a/joylive-demo/joylive-demo-grpc/joylive-demo-grpc-provider/src/main/java/com/jd/live/agent/demo/grpc/provider/service/UserServiceGrpcImpl.java
+++ b/joylive-demo/joylive-demo-grpc/joylive-demo-grpc-provider/src/main/java/com/jd/live/agent/demo/grpc/provider/service/UserServiceGrpcImpl.java
@@ -32,6 +32,13 @@ public void get(UserGetRequest request, StreamObserver<UserGetResponse> response
             responseObserver.onError(new RuntimeException("error"));
             return;
         }
+        if (request.getId() >= 100) {
+            try {
+                Thread.sleep(request.getId());
+            } catch (InterruptedException e) {
+                throw new RuntimeException(e);
+            }
+        }
         UserGetResponse.Builder builder = UserGetResponse.newBuilder();
         builder.setId(request.getId())
                 .setName("index:" + request.getId() + ", time:" + System.currentTimeMillis())
diff --git a/joylive-implement/joylive-flowcontrol/joylive-flowcontrol-redisson/src/main/java/com/jd/live/agent/implement/flowcontrol/ratelimit/redisson/RedissonRateLimiterGroup.java b/joylive-implement/joylive-flowcontrol/joylive-flowcontrol-redisson/src/main/java/com/jd/live/agent/implement/flowcontrol/ratelimit/redisson/RedissonRateLimiterGroup.java
index d8aa46129..ed0bc210a 100644
--- a/joylive-implement/joylive-flowcontrol/joylive-flowcontrol-redisson/src/main/java/com/jd/live/agent/implement/flowcontrol/ratelimit/redisson/RedissonRateLimiterGroup.java
+++ b/joylive-implement/joylive-flowcontrol/joylive-flowcontrol-redisson/src/main/java/com/jd/live/agent/implement/flowcontrol/ratelimit/redisson/RedissonRateLimiterGroup.java
@@ -33,6 +33,7 @@ public class RedissonRateLimiterGroup extends AbstractRateLimiterGroup {
     public RedissonRateLimiterGroup(RedisClientManager manager, RateLimitPolicy policy) {
         super(policy);
         this.manager = manager;
+        init();
     }
 
     @Override
diff --git a/joylive-implement/joylive-flowcontrol/joylive-flowcontrol-resilience4j/src/main/java/com/jd/live/agent/implement/flowcontrol/ratelimit/resilience4j/Resilience4jRateLimiterGroup.java b/joylive-implement/joylive-flowcontrol/joylive-flowcontrol-resilience4j/src/main/java/com/jd/live/agent/implement/flowcontrol/ratelimit/resilience4j/Resilience4jRateLimiterGroup.java
index 5e643d101..968c07d99 100644
--- a/joylive-implement/joylive-flowcontrol/joylive-flowcontrol-resilience4j/src/main/java/com/jd/live/agent/implement/flowcontrol/ratelimit/resilience4j/Resilience4jRateLimiterGroup.java
+++ b/joylive-implement/joylive-flowcontrol/joylive-flowcontrol-resilience4j/src/main/java/com/jd/live/agent/implement/flowcontrol/ratelimit/resilience4j/Resilience4jRateLimiterGroup.java
@@ -29,6 +29,7 @@ public class Resilience4jRateLimiterGroup extends AbstractRateLimiterGroup {
 
     public Resilience4jRateLimiterGroup(RateLimitPolicy policy) {
         super(policy);
+        init();
     }
 
     @Override