You can specify that a request for an old URL be treated as a request for a new URL. This is called redirecting a URL.
To specify a redirected URL for a virtual server, use the redirect_n property, where n is a positive integer that allows specification of more than one. Each of these redirect_n properties is inherited by all web applications deployed on the virtual server.
The value of each redirect_n property has two components which can be specified in any order:
The first component, from, specifies the prefix of the requested URI to match.
The second component, url-prefix, specifies the new URL prefix to return to the client. The from prefix is replaced by this URL prefix.
This example redirects from dummy to etude:
<property name="redirect_1" value="from=/dummy url-prefix=http://etude"/>