Update app.py

app.py

@@ -15,8 +15,8 @@ dashscope.api_key = DASHSCOPE_API_KEY
 KEEP_SUCCESS_TASK = 3600 * 10
 KEEP_RUNING_TASK = 3600 * 1
 # the total running task number in 1800 seconds
-LIMIT_RUNING_TASK = 10
-LIMIT_HISTORY_RUNING_TASK = 20
+LIMIT_RUNING_TASK = 3000
+LIMIT_HISTORY_RUNING_TASK = 3000
 FRESH_TIME = None
 
 task_status = {}