http://cypherpunk-handbook.i2p/articles/openbsd.html
This is also true for HTTP
daemons from packages (apache2, nginx). 6 - cron(8) OpenBSD's cron(8) daemon can randomize values (~) and prevent
multiple jobs from running concurrently (-s). Preventing conflicts
avoids race conditions, simultaneous access to shared resources, and
overload caused by multiple instances, reducing the risk of data
corruption and load spikes.