On The Insider: Backseat Confessions with Levi Johnston
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DNS records updated by Simple Failover will be accessible to the vast majority of Internet users immediately or within a few minutes. In other words, if the main web-server ever goes down, Simple Failover will be able to redirect the vast majority of the web-site visitors to a back-up web-server very quickly. Of course, without Simple Failover, ALL the visitors would see the classic "The page cannot be displayed" page instead. There are however situations where DNS caching will interfere and cause a few visitors not to be re-directed to the backup server right away. This paper provides a short introduction to how DNS caching works, how it is implemented by different applications, and how this affects Simple Failover.

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Format:PDFSize:77 KB
Date:Sep 2004
Pages:3

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