A failover in computational architecture refers to the process of switching from a primary system or service to a backup system or service in the event of a failure or outage. This is done to ensure continued availability, performance, and reliability of the system or service. Failover can be automatic or manual, depending on the system and its configuration. The backup system or service may be located on-premises or in the cloud to provide redundancy and minimize downtime. Overall, failover is a critical aspect of any system design that requires high availability and uninterrupted service.
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