application class
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A set of rules governing how the application appliance should optimize a request. An application class is identified by a name, contains a list of URLs to which it applies, and contains keywords that define what optimization actions the application appliance should take when it receives a request for one of the listed URLs.
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AppScreen class
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A set of rules governing how AppScreen should process a request. An AppScreen class is identified by a name, contains a list of URLs to which it applies, and contains keywords and policies that define what screening actions the application appliance should take when it receives a request for one of the listed URLs.
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CDN
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Content Delivery Network, such as Akamai or Speedera.
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compression
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See gzip.
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condensation
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The process of generating and sending to clients only the changes in web pages that they repeatedly visit. Condensation reduces bandwidth requirements and accelerates performance.
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cookie
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A packet of information sent by a web server to a browser and then sent back by the browser each time it accesses that server. Cookies can contain any arbitrary information the server chooses and are used to maintain state between otherwise stateless HTTP transactions. Typically this is used to authenticate or identify a user of a web site without requiring them to sign in every time they access that site.
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delta
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The difference between a base copy of a web page and a more recent version of that page (or a similar page).
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FlashForward container
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An HTML document that contains embedded references to other objects.
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FlashForward object
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An object (image, script file, or linked style sheet) embedded in an HTML document.
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gzip
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A file compression format popularized by the GNU compression utility and used by the application appliance.
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MIME type
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Multipurpose Internet Mail Extensions type. This refers to a system of identifying the type of email and world-wide web content so that data of varying types can be exchanged among many different computer systems.
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origin server
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The original server on which content resides (not a caching server that may also have a copy of the origin server content).
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rebasing
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The process of updating the base file against which content differences are calculated. The base file is stored both on the application appliance server and on the end user's system.
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user agent
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The specific application (usually a browser) that is requesting a resource from a web server. The HTTP User-Agent header is sent with every request from a client to a web server, and it uniquely identifies the type, version, and operating system of the browser making the request.
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