| N. Aghdaie and Y. Tamir. Implementation and evaluation of transparent faulttolerant web service with kernel-level support. In Proc. 11th IEEE Intl. Conf. on Computer Communications and Networks (ICCCN), pages 63--68, Miami, Florida, USA, October 2002. |
....on the device s internal state to the backup process. The backup process acts as a hot standby and assumes the responsibility of servicing incoming requests in the event of the failure of the primary process. The idea of using hot standby backup servers has also been applied in web server systems [6, 1] where standby servers take over the web server request processing from a failed server. Process System Support (PSS) 8] provides a meta programming environment that applies the processpair approach to ensure high availability for distributed applications. Isis [3] is a distributed middleware ....
N. Aghdaie and Y. Tamir. Implementation and evaluation of transparent fault-tolerant web service with kernel-level support. In Proc. of the IEEE Intl. Conf on Computer Commications and Networks, Miami, Florida, October 2002.
....then any client can benefit from greater reliability. Our earlier work [2] demonstrated the feasibility of efficient server side recovery. This work expands on that by evaluating our approach with two well known replication techniques and for two real life applications. The authors of [1] share our philosophy of server side recovery. They have developed a protocol similar to ours that is specialized to HTTP request reply pairs. In doing so, they are able to avoid the problem of server nondeterminism. Another TCP server side recovery approach is described in [10] which proposes ....
N. Aghdaie and Y. Tamir. Implementation and evaluation of transparent fault-tolerant web service with kernel-level support. In Proc. IEEE Intl. Conf. on Computer Communications and Networks, 2002.
No context found.
N. Aghdaie and Y. Tamir, "Implementation and Evaluation of Transparent Fault-Tolerant Web Service with Kernel-Level Support," 11th IEEE International Conference on Computer Communications and Networks, Miami, FL, pp. 63-68 (October 2002).
.... of: client Web browsers, one or more replicated front end servers (e.g. Apache) and one or more back end servers (e.g. a database) We have previously proposed and implemented a client transparent fault tolerant Web service scheme based on a hot standby backup front end server and logging [1, 2]. Our scheme recovers in progress requests and does not require deterministic servers or changes to the clients. In this paper, we describe and evaluate the implementation of two performance enhancements. In our original implementation each node in a primary backup pair maintained its role as the ....
....may consist of multiple TCP packets. Once a request TCP packet has been acknowledged by a server, it must not be lost. All reply TCP packets sent to the client must form consistent, correct replies to prior requests. Our scheme logs HTTP requests and replies to a hot standby backup (Figure 1) [1, 2]. Clients are unaware of the DUPLEX STANDARD entire reply Request Request Reply Reply ack ack ack ack ack data data data data data Server Client Server Client Figure 1: Message paths for a standard unreplicated server and a hot standby replication scheme. Replicated servers ....
[Article contains additional citation context not shown here]
N. Aghdaie and Y. Tamir, "Implementation and Evaluation of Transparent Fault-Tolerant Web Service with Kernel-Level Support," 11th IEEE International Conference on Computer Communications and Networks, Miami, FL, pp. 63-68 (October 2002).
No context found.
N. Aghdaie and Y. Tamir. Implementation and evaluation of transparent faulttolerant web service with kernel-level support. In Proc. 11th IEEE Intl. Conf. on Computer Communications and Networks (ICCCN), pages 63--68, Miami, Florida, USA, October 2002.
No context found.
N. Aghdaie and Y. Tamir, "Implementation and evaluation of transparent fault-tolerant web service with kernel-level support," in 11th IEEE International Conference on Computer Communications and Networks, 2002.
No context found.
Navid Aghdaie and Yuval Tamir, "Implementation and evaluation of transparent fault-tolerant web service with kernel-level support," in 11th IEEE International Conference on Computer Communications and Networks, 2002.
No context found.
N. Aghdaie and Y. Tamir. Implementation and evaluation of transparent fault-tolerant web service with kernel-level support. In Proc. of the IEEE International Conference on Computer Communications and Networks, Miami, Florida, October 2002.
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