Refined quorum systems
Rachid Guerraoui, Marko Vukolić · 2007
It is considered good distributed computing practice to devise object implementations that tolerate contention, periods of asynchrony and a large number of failures, but perform fast if few failures occur, the system is synchronous and there is no contention. This paper initiates the first study of quorum systems that help design such implementations by encompassing, at the same time, optimal resilience (just like traditional quorum systems), as well as optimal best-case complexity (unlike traditional quorum systems).