diff --git a/cache/cache.go b/cache/cache.go
index 04d75ef..5dc508f 100644
--- a/cache/cache.go
+++ b/cache/cache.go
@@ -214,26 +214,23 @@ func (mc *MemoryCache) Stats() (entries int, size int64) {
     })
     return count, mc.currentSize
 }
-
 // GetStats 返回详细的缓存统计信息
 func (mc *MemoryCache) GetStats() map[string]interface{} {
     entries, size := mc.Stats()
     
+    utilizationPercent := float64(0)
+    if mc.maxSize > 0 {
+        utilizationPercent = float64(size) / float64(mc.maxSize) * 100
+    }
+    
     return map[string]interface{}{
-        "entries":      entries,
-        "size":         size,
-        "max_size":     mc.maxSize,
-        "utilization":  float64(size) / float64(mc.maxSize) * 100,
-        "ttl_seconds":  int64(mc.ttl.Seconds()),
+        "entries":         entries,
+        "size_bytes":      size,
+        "size_mb":         float64(size) / 1024 / 1024,
+        "max_size_bytes":  mc.maxSize,
+        "max_size_mb":     float64(mc.maxSize) / 1024 / 1024,
+        "utilization_pct": utilizationPercent,
+        "ttl_seconds":     int64(mc.ttl.Seconds()),
+        "enabled":         mc.maxSize > 0,
     }
 }
-
-
-func (mc *MemoryCache) Stats() (entries int, size int64) {
-    count := 0
-    mc.entries.Range(func(key, value interface{}) bool {
-        count++
-        return true
-    })
-    return count, mc.currentSize
-}