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This match condition requires Rules Engine - Mobile Device Detection Rules. This component of Rules Engine must be purchased separately. Contact your CDN account manager to activate it.
Purpose: Identifies requests by whether the name of the browser (e.g., Chrome) that issued the request matches the pattern defined by a Perl-compatible regular expressionThis type of value is interpreted as a regular expression that defines a pattern of characters..
A value may be defined using any combination of numbers, letters, and/or symbols. This value will be interpreted as a regular expression. Regular expressions are useful for defining a pattern of characters.
Although regular expressions are quite powerful and can generate flexible solutions, it is strongly recommended that a regular expression statement be constructed, or at the very least proofed, by a developer on your team. This will ensure that the desired behavior will take place.
For example, specifying a ".*" regular expression will match all requests, since the specified pattern matches 0 or more characters. A clearer way to match all requests is through the use of the Always match condition.
Due to the manner in which cache settings are tracked, this match condition is incompatible with the following features: