Speed is critical for website success. Users won’t put up with slow sites, and search engines downgrade them. Savvy webmasters use a cache to store a “predigested” version of the most important data on their site, so that data can be delivered with minimal processing when a visitor clicks on it. The data is processed in advance, so that less processing needed while the visitor is waiting for results. There are several well-known caches for WordPress sites, The two best-known are Total Cache and Super Cache. Viper Cache was just released and may prove the be the fastest cache ever.... [...]