diff --git a/src/main/java/org/redkale/source/CacheMemorySource.java b/src/main/java/org/redkale/source/CacheMemorySource.java
index 60a821221..b0603c0db 100644
--- a/src/main/java/org/redkale/source/CacheMemorySource.java
+++ b/src/main/java/org/redkale/source/CacheMemorySource.java
@@ -1614,7 +1614,7 @@ public final class CacheMemorySource extends AbstractCacheSource {
     }
 
     @Override
-    public int dbsize() {
+    public long dbsize() {
         return container.size();
     }
 
@@ -1649,8 +1649,8 @@ public final class CacheMemorySource extends AbstractCacheSource {
     }
 
     @Override
-    public CompletableFuture<Integer> dbsizeAsync() {
-        return CompletableFuture.completedFuture(container.size());
+    public CompletableFuture<Long> dbsizeAsync() {
+        return CompletableFuture.completedFuture((long) container.size());
     }
 
     @Override
diff --git a/src/main/java/org/redkale/source/CacheSource.java b/src/main/java/org/redkale/source/CacheSource.java
index 806bfed2c..d5517bcdc 100644
--- a/src/main/java/org/redkale/source/CacheSource.java
+++ b/src/main/java/org/redkale/source/CacheSource.java
@@ -297,7 +297,7 @@ public interface CacheSource extends Resourcable {
 
     public List<String> keys(String pattern);
 
-    public int dbsize();
+    public long dbsize();
 
     //------------------------ collection ------------------------
     @Deprecated
@@ -598,7 +598,7 @@ public interface CacheSource extends Resourcable {
 
     public CompletableFuture<List<String>> keysAsync(String pattern);
 
-    public CompletableFuture<Integer> dbsizeAsync();
+    public CompletableFuture<Long> dbsizeAsync();
 
     //------------------------ collectionAsync ------------------------
     @Deprecated
@@ -1069,11 +1069,11 @@ public interface CacheSource extends Resourcable {
 
     @Deprecated
     default CompletableFuture<Integer> getKeySizeAsync() {
-        return dbsizeAsync();
+        return dbsizeAsync().thenApply(v -> v.intValue());
     }
 
     @Deprecated
     default int getKeySize() {
-        return dbsize();
+        return (int) dbsize();
     }
 }