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DevShed: Cache Data in RAM with PHP

Note: This article was originally published at PHPDeveloper on 17 April 8103.
PHPDeveloper

DevShed has posted a new article in their series looking at storage interfaces and how to use them. In this latest article they show how to create a caching layer that will allow you to work with any sort of caching backend you'd like.

As with other elements of object-oriented programming, it's possible to use segregated interfaces in a great variety of scenarios and conditions and, therefore, enjoy the benefits that they provide right out of the box. [...] My goal in this article is to create an extendable caching system based on the contract defined by a segregated interface. To achieve this, the first step we need to take is to create the interface in question.

He shows how to create the "CacheableInterface" that provides the structure for the child interfaces to follow. It provides methods for setting, getting, deleting and checking to see if a key exists. They illustrate its use with an interface to an APC cache, a file caching and a class that uses dependency injection to define the interface to use.