A Framework for Highly Available Services
Based on Group Communication.

Authors: Alan Fekete and Idit Keidar.

In the IEEE International Workshop on Applied Reliable Group Communication (WARGC), held in conjunction with ICDCS 2001, pages 57-62, Phoenix, Arizona, April 2001.

Previous version: Technical Memorandum MIT-LCS-TM-610 Massachusetts Institute of Technology, Laboratory for Computer Science, November 2000.


We present a general framework for building highly available services. The framework uses group communication to coordinate a collection of servers. Our framework is configurable, in that one can adjust parameters such as the number of servers and the extent to which they are synchronized. We analyze the scenarios that can lead to the service availability being temporarily compromised, and we discuss the tradeoffs that govern the choice of parameters.

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Last modified: Mon Jul 1 14:32:25 EDT 2002