Title:
A Novel Server Selection Technique for Improving the Response Time of a Replicated Service
A Novel Server Selection Technique for Improving the Response Time of a Replicated Service
Authors
Bhattacharjee, Samrat
Zegura, Ellen W.
Ammar, Mostafa H.
Fei, Zongming
Zegura, Ellen W.
Ammar, Mostafa H.
Fei, Zongming
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Abstract
Server replication is an approach often used to improve the ability
of a service to handle a large number of clients. One of the important
factors in the efficient utilization of replicated servers is the
ability to direct client requests to the best server, according
to some optimality criteria. In this paper we target an environment
in which servers are distributed across the Internet, and clients
identify servers using our application-layer anycasting service.
Our goal is to allocate servers to clients in a way that minimizes
a client's response time. To that end, we develop an approach for
estimating the performance that a client would experience when
accessing particular servers. Such information is maintained in a
resolver that clients can query to obtain the identity of the server
with the best response time. Our performance collection technique
combines server push with client probes to estimate the expected
response time. A set of experiments is used to demonstrate the
properties of our performance determination approach and to show its
advantages when used within the application-layer anycasting architecture.
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Date Issued
1997
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288315 bytes
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Text
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Technical Report