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Book Overview & Buying
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Table Of Contents
Professional WordPress - Third Edition
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WordPress is a content management system, which by its very definition means it creates a dynamically driven site. In today’s technology environment, that essentially translates into managed content and all of its metadata is stored in a database. Every page request has to access the database to determine which content is to be displayed, versus, with a static site, simply fetching HTML files from the web server’s local directory. The trade-off in handing over content storage to a database is that you are going to take a speed hit in the individual page access in exchange for more powerful persistence, selection, and organization tools—those features used within the WordPress core. Basic computer science comes into play here: When you introduce a new abstraction layer that is slower than the layer above it, you typically introduce a caching mechanism as well to improve average access times.
It helps to think of caching in a sequence of access methods...
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