DNS Caching and How It Affects Simple Failover
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Overview: Depending on the application and other circumstances, DNS caching may affect how quickly users are re-directed to a backup server by Simple Failover. Of course one needs to compare this to the alternative: Without Simple Failover, as long as the main server is unavailable, NO users will be able to access the services. This paper from JH Software ApS provides a short introduction to how DNS caching works, how it is implemented by different applications, and how this affects Simple Failover.