Showing papers by "Joseph M. Hellerstein published in 1982"

The Exclusive-Writer Protocol: A Low Cost Approach for Updating Replicated Files in Distributed Real Time Systems.

Abstract: The emerging global scientific collaborations demand a scal able, efficient, reliable, and still convenient data access and management scheme. To fulfill these requirements, this paper descr ibes a replicated file system that supports mutable (i.e., re ad/write) replication with strong consistency guarantees, small per formance penalty, high failure resilience, and good scalin g properties. The paper further evaluates the system using a real sci entific application. The evaluation results show that the pr esented replication system can significantly improve the applicati on’s performance by reducing the first-time access latency t o read the input data and by distributing the verification of data acces s to a nearby server. Furthermore, the penalty of file replica tion is negligible as long as applications use synchronous writes a t a moderate rate.