What does the front end do with concurrent requests?

as mentioned above, how to implement concurrent requests

Jun.10,2022

use asynchronous Prmosie or web worker


front-end asynchronous operations can be concurrent! Requests like js css img are concurrent!

MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1e770eb-4daf8.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e770eb-4daf8.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
Need Help?