Consistency vs. Availability in Distributed Cyber-Physical Systems
Consistency vs. Availability in Distributed Cyber-Physical Systems
复制标题
分布式信息物理系统中的一致性与可用性
DOI:
10.1145/3609119
复制
发表时间:
2023
影响因子:
2
通讯作者:
Menard, Christian
中科院分区:
文献类型:
--
作者:
Lee, Edward A.;Akella, Ravi;Bateni, Soroush;Lin, Shaokai;Lohstroh, Marten;Menard, Christian
In distributed applications, Brewer’s CAP theorem tells us that when networks become partitioned (P), one must give up either consistency (C) or availability (A). Consistency is agreement on the values of shared variables; availability is the ability to respond to reads and writes accessing those shared variables. Availability is a real-time property whereas consistency is a logical property. We extend consistency and availability to refer to cyber-physical properties such as the state of the physical system and delays in actuation. We have further extended the CAP theorem to relate quantitative measures of these two properties to quantitative measures of communication and computation latency (L), obtaining a relation called the CAL theorem that is linear in a max-plus algebra. This paper shows how to use the CAL theorem in various ways to help design cyber-physical systems. We develop a methodology for systematically trading off availability and consistency in application-specific ways and to guide the system designer when putting functionality in end devices, in edge computers, or in the cloud. We build on theLingua Francacoordination language to provide system designers with concrete analysis and design tools to make the required tradeoffs in deployable embedded software.
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DOI:
10.1007/978-3-030-41131-2_4
发表时间:
2019-10
期刊:
--
影响因子:
--
作者:
Marten Lohstroh;Í. Í. Romeo-Í.;Andrés Goens;P. Derler;J. Castrillón;Edward A. Lee;A. Sangiovanni-Vincentelli-A.-Sangiovanni
通讯作者:
Marten Lohstroh;Í. Í. Romeo-Í.;Andrés Goens;P. Derler;J. Castrillón;Edward A. Lee;A. Sangiovanni-Vincentelli-A.-Sangiovanni
DOI:
--
发表时间:
2018
期刊:
IEEE Real Time Technology and Applications Symposium
影响因子:
--
作者:
Saranya Natarajan;David Broman
通讯作者:
David Broman
DOI:
--
发表时间:
2010
期刊:
影响因子:
--
作者:
L. Guzzella;C. Onder
通讯作者:
C. Onder
DOI:
--
发表时间:
2020
期刊:
影响因子:
--
作者:
Edward A. Lee
通讯作者:
Edward A. Lee
DOI:
--
发表时间:
2020
期刊:
影响因子:
--
作者:
Marten Lohstroh
通讯作者:
Marten Lohstroh