Navid Aghdaie

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The Web is increasingly used for critical applications and services. We present a client-transparent mechanism, called CoRAL, that provides high reliability and availability for Web service. CoRAL provides fault tolerance even for requests being processed at the time of server failure. The scheme does not require deterministic servers and can thus handle(More)
—Most of the techniques used for increasing the availability of web services do not provide fault tolerance for requests being processed at the time of server failure. Other schemes require deterministic servers or changes to the web client. These limitations are unacceptable for many current and future applications of the Web. We have developed an(More)
—Reliable Web service requires the ability to complete transactions that are in progress when a Web server fails. We have previously presented a client-transparent scheme, based on a standby backup and logging, for providing such fault-tolerant Web service. The scheme does not require deterministic servers and can thus properly handle dynamic content. This(More)
As video conferencing plays an increasingly critical role in many business environments, there is a need to ensure highly reliable operation of the conferencing infrastructure. We present a scheme for adding fault tolerance to an existing video conferencing server. The scheme is client-transparent so that it can be used by the installed base of clients.(More)
Matchmaking connects multiple players to participate in online player-versus-player games. Current matchmaking systems depend on a single core strategy: create fair games at all times. These systems pair similarly skilled players on the assumption that a fair game is best player experience. We will demonstrate, however, that this intuitive assumption(More)
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