Publication

Specification of Replication Techniques, Semi-Passive Replication, and Lazy consensus*

André Schiper
2002
Reports

Abstract

This paper brings the following three main contributions: a hierarchy of specifications for replication techniques, semi-passive replication, and Lazy Consensus. Based on the definition of the Generic Replication problem, we difine two families of replication techniques: replication with parsimonious processing (e.g., passive replication), and replication with redundant processing (e.g., active replication). This helps relate replication techniques to each other. We define a novel replication technique with parsimonious processing, called semi-passive replication, for which we also give an algorithm. The most significant aspect of semi-passive replication is that it requires a weaker system model than existing techniques of the same family. We difine a variant of the Consensus problem, called Lazy Consensus, upon which our semi-passive replication algorithm is based. The main difference between Consensus and Lazy Consensus is a property of laziness which requires that initial values are computed only when they are actually needed.

Official source

https://infoscience.epfl.ch/entities/publication/81d0b89c-2be8-4f85-9d10-f80140c9b922

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André Schiper
2002
Reports

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/81d0b89c-2be8-4f85-9d10-f80140c9b922

About this result

Related concepts (25)

Self-replication

Self-replication is any behavior of a dynamical system that yields construction of an identical or similar copy of itself. Biological cells, given suitable environments, reproduce by cell division. During cell division, DNA is replicated and can be transmitted to offspring during reproduction. Biological viruses can replicate, but only by commandeering the reproductive machinery of cells through a process of infection. Harmful prion proteins can replicate by converting normal proteins into rogue forms.

Self-replicating machine

A self-replicating machine is a type of autonomous robot that is capable of reproducing itself autonomously using raw materials found in the environment, thus exhibiting self-replication in a way analogous to that found in nature. The concept of self-replicating machines has been advanced and examined by Homer Jacobson, Edward F. Moore, Freeman Dyson, John von Neumann, Konrad Zuse and in more recent times by K.

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