The new medium of the latter half of the 20th century, and how pioneers like Sam Golden transformed it to make it suitable as a replacement for oils.
DAS
Since the update to XProtect Remediator version 151, many have seen warnings of a plugin being cancelled. This explains how that happens, and what you can do about it.
Users should be given a third option to defer updating further, as well as doing it now or later tonight. Does the DAS scheduling and dispatch system rely on security through obscurity too?
How DAS gathers its budgets and loads lists of activities. When rescoring permits, it then dispatches the process to initiate backup. Re-scheduling has changed in Sequoia, as shown here.
Easy to code, these don’t need to use XPC although it’s used by the DAS-CTS scheduling and dispatch system. They aren’t run at constant time intervals, but when appropriate according to other loads.
How does XProtect Remediator scan your Mac once a day? What has gone wrong when it doesn’t appear to work? Explained from its property lists to its three different types of scan.
There’s normally more than 500 background activities, like Time Machine backups and XProtect Remediator scans, waiting for dispatch in the list maintained by DAS. How this works.
Since 2005, macOS has had the master launcher launchd and its LaunchAgents and LaunchDaemons. Then in 2014 Apple added Duet Activity Scheduler to run tasks when conditions are suitable.
How do the SMC and CoreDuet manage the systems in your Mac, and should you fiddle with them?
Automatic Time Machine backups aren’t scheduled to run at precise times, but when it’s convenient. This explains how, and what to do if goes wrong.
The Eclectic Light Company 