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PHP Oracle Web Development: Data processing, Security, Caching, XML, Web Services, and Ajax
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While developing a PHP/Oracle application that uses database data heavily, it makes sense to think about caching the data that is frequently moved between the database server and web server. In practice, for the purpose of increasing performance, it might be useful not only to cache database result sets on the web server, but also to hold information that is used often, which is relevant to an application, in the memory of the database server instance.
However, to effectively implement caching on the database server, you must have a good understanding of how Oracle's default caching mechanisms work. In particular, you must have a grasp of how Oracle caches the data and metadata of SQL and PL/SQL statements issued against the database.
The challenge with caching data on the web server is to know in advance the time to update the cache. Obviously, a time-triggered approach that is commonly used in caching systems is not the best strategy when it comes to implementing caching...
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