Ravi Sir's Cards › AWS
OnCalendar vs OnUnitActiveSec
What is a VPC: your own private network inside one AWS Region, example ThreeTierVpc 10.0.0.0/16.
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What this card says
Timer type
OnCalendar
Wall clock time.
OnUnitActiveSec
Every N after last run.
Key points
Like cron.
Like an interval.
Example
OnCalendar=*-*-* 02:00
Use when
Reports, backups.
Polling, health checks.