one database of user balance, one database of order table, one database of fund details users use balance to place orders, how to ensure that no more orders will be placed and the data are consistent in the case of large concurrency ...
recently, I have been studying the scheme of sub-database and sub-database. I don t have much experience. If you have any questions, I will ask you for advice. for example, an order table with fields: placing an order for id, goods, id, store, id, iss...
js closures, from which direction can we better understand closures? I always feel that my understanding is not very clear ...
is there any mature solution for PHP to realize online preview of OFFICE-related files ...
I customized a UIViewController through xib, and then put a UICollectionView on it, and then I wanted to drag a UICollectionViewCell onto UICollectionView (just like UITableView ), but I couldn t drag it up. ...
recently, I have been reading the official tutorial of Vuex and referring to some blog articles, and then I have summed up myself to see if the status of Vuex (state) can be understood as the data? of Vue instance. Getter is treated as a similar calculat...
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