优化下载次数统计代码

fir_ser/api/utils/crontab/ctasks.py

@@ -21,6 +21,7 @@ def sync_download_times():
     key = "_".join([down_tem_key, '*'])
     for app_download in cache.iter_keys(key):
         count_hits = cache.get(app_download)
+        if count_hits:
             app_id = app_download.split(down_tem_key)[1].strip('_')
             Apps.objects.filter(app_id=app_id).update(count_hits=count_hits)
             logger.info(f"sync_download_times app_id:{app_id} count_hits:{count_hits}")