diff --git a/lib/middleware/cache.js b/lib/middleware/cache.js
index f69275ade..7b332ffe2 100644
--- a/lib/middleware/cache.js
+++ b/lib/middleware/cache.js
@@ -144,6 +144,7 @@ module.exports = function(app, options = {}) {
         let type;
         let ok = false;
 
+        logger.warn(`getCache in ${key} ${value}`);
         if (value) {
             ctx.response.status = 200;
             type = (await globalCache.get(tkey)) || 'text/html';
@@ -243,6 +244,7 @@ module.exports = function(app, options = {}) {
         try {
             ok = await getCache(ctx, key, tkey);
         } catch (e) {
+            logger.warn(`getCache catch ${e instanceof Error ? e.stack : e}`);
             ok = false;
         }
         if (ok) {