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...
when I use the element NavMenu navigation menu myself, it flashes when I click on the submenu and reopens the submenu, but I see that the use of the vue-element-admin item, when navigating to another subroute, will not flicker and reopen the submenu. How...
Wechat Subscription account, how to obtain the user s unique ID openid if server configuration is not enabled if enabled, custom menus and automatic replies cannot be used on the Wechat platform. will have to be redeveloped. How to obtain the use...
I run a springboot project Run Configuration configuration is shown above, and parameter is -X-pl com.nan:web-am clean package-Dmaven.test.skip=true-Poffice after running, the result is: Connected to the target VM, address: 127.0.0.1 transport...
the nuxt framework uses asyncData, and needs to be re-npm run dev every time it changes. Otherwise, the error will be reported, and the code and error will be as follows asyncData({ params }) { let getNews = axios.getNews({ limit: 2 }) let ge...
problem description such as the question, let a = "0xc22458"; let b = 0xc22458; typeof a; string typeof b; number now there is a, how can we turn it into b ...