diff --git a/dubbo-common/src/main/java/org/apache/dubbo/common/config/Environment.java b/dubbo-common/src/main/java/org/apache/dubbo/common/config/Environment.java
index 52da9d01d8..b5f24f745d 100644
--- a/dubbo-common/src/main/java/org/apache/dubbo/common/config/Environment.java
+++ b/dubbo-common/src/main/java/org/apache/dubbo/common/config/Environment.java
@@ -30,8 +30,6 @@ import java.util.Collection;
 import java.util.HashMap;
 import java.util.Map;
 import java.util.Optional;
-import java.util.concurrent.ConcurrentHashMap;
-import java.util.concurrent.ConcurrentMap;
 
 public class Environment extends LifecycleAdapter implements FrameworkExt {
     public static final String NAME = "environment";
@@ -42,7 +40,6 @@ public class Environment extends LifecycleAdapter implements FrameworkExt {
     private final InmemoryConfiguration externalConfiguration;
     private final InmemoryConfiguration appExternalConfiguration;
 
-    private final ConcurrentMap<AbstractConfig, CompositeConfiguration> prefixedConfigurations = new ConcurrentHashMap<>();
     private CompositeConfiguration globalConfiguration;
 
     private Map<String, String> externalConfigurationMap = new HashMap<>();
@@ -116,12 +113,6 @@ public class Environment extends LifecycleAdapter implements FrameworkExt {
      * @return
      */
     public synchronized CompositeConfiguration getPrefixedConfiguration(AbstractConfig config) {
-//        CompositeConfiguration prefixedConfiguration =
-//                prefixedConfigurations.putIfAbsent(config, new CompositeConfiguration(config.getPrefix(), config.getId()));
-//        if (prefixedConfiguration != null) {
-//            return prefixedConfiguration;
-//        }
-//        prefixedConfiguration = prefixedConfigurations.get(config);
         CompositeConfiguration prefixedConfiguration = new CompositeConfiguration(config.getPrefix(), config.getId());
         Configuration configuration = new ConfigConfigurationAdapter(config);
         if (this.isConfigCenterFirst()) {
diff --git a/dubbo-metadata/dubbo-metadata-processor/src/main/java/org/apache/dubbo/metadata/annotation/processing/rest/ServiceRestMetadataStorage.java b/dubbo-metadata/dubbo-metadata-processor/src/main/java/org/apache/dubbo/metadata/annotation/processing/rest/ServiceRestMetadataStorage.java
index c3809944fc..83afe246b2 100644
--- a/dubbo-metadata/dubbo-metadata-processor/src/main/java/org/apache/dubbo/metadata/annotation/processing/rest/ServiceRestMetadataStorage.java
+++ b/dubbo-metadata/dubbo-metadata-processor/src/main/java/org/apache/dubbo/metadata/annotation/processing/rest/ServiceRestMetadataStorage.java
@@ -42,16 +42,13 @@ public class ServiceRestMetadataStorage {
     }
 
     public void append(Set<ServiceRestMetadata> serviceRestMetadata) throws IOException {
-        Set<ServiceRestMetadata> allServiceRestMetadata = new LinkedHashSet<>();
         storage.read(SERVICE_REST_METADATA_RESOURCE_PATH, reader -> {
             Gson gson = new Gson();
             return (List) gson.fromJson(reader, getParameterized(List.class, ServiceRestMetadata.class).getType());
         }).ifPresent(existedMetadata -> {
             // Add all existed ServiceRestMetadata
-            allServiceRestMetadata.addAll(existedMetadata);
+            serviceRestMetadata.addAll(existedMetadata);
         });
-        // Add all new ServiceRestMetadata
-        allServiceRestMetadata.addAll(serviceRestMetadata);
         write(serviceRestMetadata);
     }