when you encounter new tasks and daily tasks when doing an APP interface function, it is reasonable to write in the background. It is wrong to ask if you have done a task every time you do it. For example, if you want to check whether you have completed the newcomer task reward when updating the user information, then it doesn"t seem too much to query every time. Some people say to do it with queues, regularly query the list of tasks that have been completed, and then increase the reward for the tasks completed accordingly. However, for credit cards, bank withdrawals and so on, it is not all right to display data in real time. We must add gold coins immediately after we finish the task, so is there any good way to ask for advice?