irule for url redirect and pool specific

Please ensure you search previous posts before posting, this is one of the most commonly asked questions and has been answered many times before.

There is also an example of something similar in the iRule wiki:

https://devcentral.f5.com/wiki/iRules.HTTP__uri.ashx

This is an example of how you could rewrite your URI and select a pool based on this condition

when HTTP_REQUEST {
    if {[HTTP::uri] starts_with "/btty" } {
        set newURI [string map {"/btty" ""} [HTTP::uri]]
        HTTP::uri $newURI
        pool poolA
    } else {
        pool poolB
    }
}