AJAX Storage A Look at Flash Cookies and Internet Explorer …

Short Description
Another storage technology is Microsoft® Internet Explorer’s persistence of. user data. … either Firefox’s cache or Internet Explorer’s cache is cleared. …

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www.foundstone.com
877.91.FOUND
Foundstone Professional Services & Education
A division of McAfee
. 2006 McAfee, Inc.
AJAX Storage:
A Look at Flash Cookies and Internet Explorer Persistence
Corey Benningerwww.foundstone.com
877.91.FOUND
Foundstone Professional Services & Education
A division of McAfee
. 2006 McAfee, Inc.
The AJAX Storage Dilemna
AJAX (Asynchronous JavaScript and XML) applications are constantly looking for ways to
increase their performance. One obvious way to do this is to store more data locally, since data
can be loaded from a local file much more quickly than it can be retrieved from a remote
website. Imagine an AJAX application pushing down database tables to your browser once and
then allowing you to query that data over and over again without going back to the server. This
also would work well for applications that allow users to access some functions and data offline,
queuing up and saving data until the user can reconnect to the server.
In the past, the data storage solution has been to store data in a cookie, but cookies are limited in
size to 4KB per domain. Thus, cookies have generally been used to save small bits of
information such as a session ID or perhaps a user’s login name for their next visit. Common
HTTP cookies can be viewed with a local HTTP proxy and are sent from the website…