Reference

2 articles in Reference.

Reference
What Is a Cron Job? The Complete Guide

A cron job runs a command automatically on a schedule. The five-field syntax explained, copy-paste examples, the gotchas that break jobs, and how to know when one stops running.
9 July 2026
Reference
What Does 99.9% Uptime Actually Mean? (The Nines, Explained)

99.9% uptime allows about 43 minutes of downtime a month. Here is what every "nine" means in real minutes, how to calculate uptime, and why 99.99% is far harder.
30 June 2026

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