A monitoring tool provided according to an aspect of the present invention causes an HTTP request to be resubmitted to another server system if a server system, to which the same HTTP request has been earlier submitted, is detected to have failed without completing processing of the request. In one embodiment, the server system is deemed to have failed upon absence of completion of requests for a pre-specified duration. As an alternative or in addition, the operational status of the server system is checked periodically and the server system is deemed to have failed if it is non-operational.