vBulletin等脚本如何在不使用cron作业的情况下启动定期维护作业？

Question

How do scripts such as vBulletin launch regular maintenance jobs without cron jobs? For example, vBulletin does not update thread view counts in real-time, and only does so hourly according to their documentation. However, they don't use cron jobs to do that, so how do they do it?

I ask because I would like to do something similar on one of my sites, but don't know how they do this magic?

Answer 1

@Mitzimoto is correct. https://www.vbulletin.com/docs/html/scheduled_tasks_intro

vBulletin’s scheduled tasks system does not constantly run on the server like cron and scheduled tasks in Windows®. Tasks are automatically run when a user browses your board, so if your board does not have any traffic at a given time, tasks scheduled to run then will not run until later. vBulletin’s scheduled tasks also will not run when you board is turned off.