No matter how meticulously you set up your infrastructure, a power grid failure will take your servers down, unless you have a UPS (Uninterruptible Power Supply) to keep things running. A UPS takes over the power supply, until its battery runs out.
But here’s the catch: even the best UPS is pointless if your services don’t restart automatically when power returns.
I recently put this to the test while installing a car charger at home.
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