diff --git a/client/src/main/java/com/alibaba/nacos/client/config/impl/Limiter.java b/client/src/main/java/com/alibaba/nacos/client/config/impl/Limiter.java
index 5c501a6d38d..a05c2ec1b90 100644
--- a/client/src/main/java/com/alibaba/nacos/client/config/impl/Limiter.java
+++ b/client/src/main/java/com/alibaba/nacos/client/config/impl/Limiter.java
@@ -40,7 +40,7 @@ public class Limiter {
     private static final Cache<String, RateLimiter> CACHE;
     
     static {
-        CACHE = CacheBuilder.builder()
+        CACHE = CacheBuilder.<String, RateLimiter>builder()
                 .expireNanos(1, TimeUnit.MINUTES)
                 .initializeCapacity(CAPACITY_SIZE)
                 .sync(true)
diff --git a/common/src/main/java/com/alibaba/nacos/common/cache/builder/CacheBuilder.java b/common/src/main/java/com/alibaba/nacos/common/cache/builder/CacheBuilder.java
index 7920f68489c..082bc92b2db 100644
--- a/common/src/main/java/com/alibaba/nacos/common/cache/builder/CacheBuilder.java
+++ b/common/src/main/java/com/alibaba/nacos/common/cache/builder/CacheBuilder.java
@@ -39,7 +39,7 @@ public class CacheBuilder<K, V> {
     private static final int DEFAULT_EXPIRE_NANOS = -1;
     
     private long expireNanos = DEFAULT_EXPIRE_NANOS;
-        
+    
     private int maximumSize = DEFAULT_MAXIMUMSIZE;
     
     private int initializeCapacity = DEFAULT_INITIALIZE_CAPACITY;
@@ -48,14 +48,14 @@ public class CacheBuilder<K, V> {
     
     private boolean lru = false;
     
-    public static CacheBuilder builder() {
-        return new CacheBuilder();
+    public static <K, V> CacheBuilder<K, V> builder() {
+        return new CacheBuilder<>();
     }
     
     /**
      * Set expiration time.
      */
-    public CacheBuilder expireNanos(long duration, TimeUnit unit) {
+    public CacheBuilder<K, V> expireNanos(long duration, TimeUnit unit) {
         checkExpireNanos(duration, unit);
         this.expireNanos = unit.toNanos(duration);
         return this;
diff --git a/core/src/main/java/com/alibaba/nacos/core/utils/StringPool.java b/core/src/main/java/com/alibaba/nacos/core/utils/StringPool.java
index 7c3020a0020..4d111c36e51 100644
--- a/core/src/main/java/com/alibaba/nacos/core/utils/StringPool.java
+++ b/core/src/main/java/com/alibaba/nacos/core/utils/StringPool.java
@@ -33,7 +33,7 @@ public class StringPool {
     private static final Cache<String, String> GROUP_KEY_CACHE;
     
     static {
-        GROUP_KEY_CACHE = CacheBuilder.builder().maximumSize(5000000)
+        GROUP_KEY_CACHE = CacheBuilder.<String, String>builder().maximumSize(5000000)
                 .expireNanos(180, TimeUnit.SECONDS)
                 .lru(true)
                 .build();