diff --git a/core/src/cache/Cache.inl b/core/src/cache/Cache.inl
index 9ebec7cfdd..e5e0baf9e7 100644
--- a/core/src/cache/Cache.inl
+++ b/core/src/cache/Cache.inl
@@ -179,6 +179,11 @@ Cache<ItemObj>::print() {
     }
 
     SERVER_LOG_DEBUG << "[Cache item count]: " << cache_count;
+#if 0
+    for (auto it = lru_.begin(); it != lru_.end(); ++it) {
+        SERVER_LOG_DEBUG << it->first;
+    }
+#endif
     SERVER_LOG_DEBUG << "[Cache usage]: " << usage_ << " bytes";
     SERVER_LOG_DEBUG << "[Cache capacity]: " << capacity_ << " bytes";
 }