A pessimistic consistency control algorithm for replicated files which achieves high availability

On Improving the Availability of Replicated Files

To improve the availability and reliability of files the data are often replicated at several sites. A scheme must then be chosen to maintain the consistency of the file contents in the presence of site failures. The most commonly used scheme is voting. Voting is popular because it is simple and robust: voting schemes do not depend on any sophisticated message passing scheme and are unaffected ...

Trading Consistency for Availability in a Replicated System

Distributed systems are of unprecedented interest and importance today. Their omnipresence pervades many aspects of our daily lives leading to an increasing demand for dependability of such systems, sometimes very critically as in systems for air traffic control or public safety. As systems are expected to continue functioning even in the presence of failures, fault-tolerance as one means to en...

Voting and Relocation Strategies Preserving Consistency among Replicated Files

Replication can enhance the availability of the data les in a distributed environment. This paper introduces a method for managing replicated data les. Unlike many others, our method provides protocols and algorithms for a more complicated scheme of replication that supports replication with location-variant les and les with a variable degree of replication. We assume the existence of a dynamic...

Regeneration-based Multiversion Dynamic Voting Scheme for Replicated Database Systems. in 6th Ieee Conference On

A pessimistic consistency control algorithm for replicated les which achieves high availability. of replicated objects: A technique and its eden A majority consensus approach to concurrency control for multiple copy databases.

A High Availability \sqrt{N} Hierarchical Grid Algorithm for Replicated Data