Multiple pool and uri selections

You could also use a switch:

when HTTP_REQUEST {
    switch -glob [string tolower [HTTP::uri]] {
        "/dam-ws*" {
            pool abc.xyz_8102
            HTTP::uri "/dam-ws$1"
        }
        "/artesiavideo*" {
            pool abc.xyz_8554
            HTTP::uri "/ArtesiaVideo$1"
        }
        "/teams/metadataeditor*" {
            pool abc.xyz_11090
            HTTP::uri "/teams/MetadataEditor.do$1"
        }
        "/mac/plain/recentlyupdatedcompaigns*" {
            pool abc.xyz_8088
            HTTP::uri "/mac/plain/recentlyUpdatedCompaigns$1"
        }
        "/media-portal/displayLink.action*" {
            HTTP::uri "/mac/mp/asset/viewSearchBasket.htm$1"
        }
        "/media-portal/download*" {
            HTTP::uri "/mac/mp/download/a.htm$1"
        }
        "/media-portal/displayAsset.action*" {
            HTTP::uri "/mac/mp/download/asset/master.htm$1"
        }
    }
}

Or you could use a data group. Something like this:

when HTTP_REQUEST {
    if { [class match [string tolower [HTTP::uri]] starts_with uri_dg] } {
        set path_pool [split [class match -value [string tolower [HTTP::uri]] starts_with uri_dg] ","]
        HTTP::uri [lindex $path_pool 0]
        if { [llength $path_pool] > 1 } {
            pool [lindex $path_pool 1]
        }
    }
}

where uri_dg is a string-based data group that concatenates the URI and pool. Example:

/dam-ws := /dam-ws$1,abc.xyz_8102
/artesiavideo := /ArtesiaVideo$1,abc.xyz_8554
/teams/metadataeditor := /teams/MetadataEditor.do$1,abc.xyz_11090
/mac/plain/recentlyupdatedcompaigns := /mac/plain/recentlyUpdatedCompaigns$1,abc.xyz_8088
/media-portal/displayLink.action := /mac/mp/asset/viewSearchBasket.htm$1
/media-portal/download := /mac/mp/download/a.htm$1
/media-portal/displayAsset.action := /mac/mp/download/asset/master.htm$1