What is failover? How systems plan for failure | Systems with Sana
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What is failover? How systems plan for failure | Systems with Sana
In 2021, Facebook went down for 6 hours. Their DNS servers became unreachable, engineers could not remotely access the infrastructure, and some had to physically travel to data centres to manually restore access. Systems that do not plan for failure will fail in the worst possible way at the worst possible time. Failover is how you plan for ...
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