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YUI 2: Storage Utility

The Storage Utility provides a mechanism for storing significant amounts of textual data, client-side, whether or not your browsers supports the proposed HTML 5 Storage specification.

Each instance of the Storage Utility leverages one of three storage engines in order to store data:

HTML 5: If the client browser supports HTML 5, then this engine will wrap the browser's native storage capability (





Google Gears: Google Gears is a browser extension that users can install on their machine. One of its features is a SQLite database; the Storage Utility uses this database for client-side storage when using the Gears engine.

SWF: YUI provides a SWFStore Utility that normalizes access to the Flash Shared Object. This is the Storage Utility's fallback engine, which will work on most browsers due to the significant penetration of the Adobe Flash plugin.

YUI Theater: Matt Snider — Introducing the YUI 2.8.0 Storage Utility

Matt Snider, the lead frontend engineer for (recently acquired by Intuit), contributed the YUI Storage Utility in the 2.8.0 release. In this session, he provides an overview of the Storage Utility's features and the nuances of the various storage backends.

Getting Started

The Storage Utility is dependant on the Yahoo Global Object, Dom, and Event. Optionally, if you wish to use session storage, then include Cookie, and if you plan to use SWF storage include SWF Store and its dependencies. In a common implementation that relied on both session storage and SWFStore, you would include the following source files in your web page: