Dear all,

we use moodle for internal staff training, due to recently promotion campaign, recently our DBA reports the system limits only 400 thread, but after checking the database setting DB hosted in Aliyun cloud, nothing special found to be limited/

Do experts here share more insight? we're going to roll-out to different countries so we urge to understand the potential system capability. 

We're using 3.7.x and all users use customized mobile app connect to our moodle, database are MySQl 5.7, PHP are 7.2

thanks.