Always test your regex-based virtual URI configurations thoroughly before applying them to a live environment. The configurations that seem correct on the surface can yield unwanted results. For example, using boundary matchers (the hat ^, the dollar $, and others) in fromUri and toUri may improve your matches otherwise a simple value such as /foobar.html will be matched not only in /foobar.html but also in /something/foobar.html and even /foobar.html/something_else.
Always test your regex-based virtual URI configurations thoroughly before applying them to a live environment. The configurations that seem correct on the surface can yield unwanted results. For example, using boundary matchers (the hat