Create a Datagroup with URI:VIP:POOL relationship

May be something like this, not tested,

Irule:

ltm rule /Common/VIP_URI_POOL_RULE {
when HTTP_REQUEST {
	set httpuri [string tolower [HTTP::uri]]
    set uri_pool [class match -value $httpuri contains VIP_URI_POOL_DGL]
	if { $uri_pool ne "" } {
		if { [active_members $uri_pool ] > 0 } {
		pool $uri_pool
		} else {
		pool servers_fallback_pool
		}
	} else {
	pool servers_default_pool
	}
}

Data Group:

ltm data-group internal VIP_URI_POOL_DGL {
    records {
	"/def/ghi/account*" {
        data servers_8100
   }
    "/def/ghi/customer*" {
        data servers_8200
    }
    "/def/ghi/equipment*" {
        data servers_8300
    }
    "/def/ghi/order*" {
        data servers_8400
    }
    "/def/ghi/statement*" {
        data servers_8500
    }
    "/def/ghi/payment*" {
        data servers_8600
    }
    "/def/ghi/financials*" {
        data servers_8700
    }
    type string
}
}