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PHP 5 Social Networking by Michael Peacock

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Redundancy

As Dino Space becomes more popular, the consequences of downtime become more severe. Each second of downtime is time that new users are turned away from the site, leading them to potentially look elsewhere. It is also a time when existing users may be put off from the site, and may look into alternative sites that may be more reliable. This point is emphasized by the media coverage and public reaction each time a popular social website, such as Twitter or Facebook, goes offline.

Redundant systems should help reduce or eliminate downtime, by providing backups of everything, including:

  • Replicated database servers—so if our primary database server goes offline, a back up server kicks in. The data on this backup is up to date because it would ...

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