diff --git a/app/modules/fanart/__init__.py b/app/modules/fanart/__init__.py
index 93d13ecc..2d5f5cbd 100644
--- a/app/modules/fanart/__init__.py
+++ b/app/modules/fanart/__init__.py
@@ -420,7 +420,7 @@ class FanartModule(_ModuleBase):
         return result
 
     @classmethod
-    @cached(maxsize=settings.CACHE_CONF["fanart"], ttl=settings.CACHE_CONF["meta"])
+    @cached(maxsize=settings.CACHE_CONF["fanart"], ttl=settings.CACHE_CONF["meta"], skip_none=False)
     def __request_fanart(cls, media_type: MediaType, queryid: Union[str, int]) -> Optional[dict]:
         if media_type == MediaType.MOVIE:
             image_url = cls._movie_url % queryid
diff --git a/app/utils/limit.py b/app/utils/limit.py
index 27dc7fcd..bec915da 100644
--- a/app/utils/limit.py
+++ b/app/utils/limit.py
@@ -156,7 +156,8 @@ class ExponentialBackoffRateLimiter(BaseRateLimiter):
         with self.lock:
             self.next_allowed_time = current_time + self.current_wait
             self.current_wait = min(self.current_wait * self.backoff_factor, self.max_wait)
-            self.log_warning(f"触发限流，将在 {self.current_wait} 秒后允许继续调用")
+            wait_time = self.next_allowed_time - current_time
+            self.log_warning(f"触发限流，将在 {wait_time:.2f} 秒后允许继续调用")
 
 
 # 时间窗口限流器