Linearizability and sequential consistency, Software Engineering

Assignment Help:

QUESTION - Fault Tolerance

(a) Three computers together provide a replicated service. The manufacturers claim that each computer has a mean time between failure of five days; a failure typically takes four hours to fix. What is the availability of the replicated service?

(b) In the gossip architecture, why does a replica manager need to keep both a ‘replica' timestamp and a ‘value' timestamp?

(c) Explain the difference between linearizability and sequential consistency, and why the latter is more practical to implement, in general.

(d) Explain why allowing backups to process read operations leads to sequentially consistent rather than linearizable executions in a passive replication system.


Related Discussions:- Linearizability and sequential consistency

Explain the stages of rapid application development model, Question: a)...

Question: a) It has often been argued that Rapid Application Development results in small stand-alone systems running in isolation. Discuss. b) Rapid Application developmen

Determine about the bottlenecks of performance testing, What kinds of bottl...

What kinds of bottlenecks can be expected in performance testing? Bottlenecks in performance testing can have below effects: - It can affect the performance and the scalabil

Explain different phases of spiral model, Q. Explain Different Phases of sp...

Q. Explain Different Phases of spiral model? 1) Planning: In this phase the objectives alternatives as well as constraints of the project are determined or documented. The ob

Define equivalence class, Equivalence class: -It shows a set of valid or in...

Equivalence class: -It shows a set of valid or invalid states for input conditions. An input condition is either a particular numeric value, a range of values, a set of related val

What is procedure, What is Procedure? Ans) The step-by-step method follo...

What is Procedure? Ans) The step-by-step method followed to make sure that standards are met.

What is the purpose of timeline chart, What is the purpose of timeline char...

What is the purpose of timeline chart? The purpose of the timeline chart is to emphasize the scope of the individual task. As set of tasks are given as input to the timeline ch

Various attributes of cost drivers used in cocomo model, Various attributes...

Various attributes of cost drivers used in COCOMO model are: 1.  Physical attributes: These are concerned with needed characteristics of the software product being developed.

Enterprise resource planning system, 1. Please compare and contrast economi...

1. Please compare and contrast economic, market, and relevancy value. 2. Discuss uncertainty as it relates to the overall logistical performance cycle. How can performance cycle

Briefly describe the principles of the dsdm methodology, Question: a) B...

Question: a) Briefly describe the principles of the DSDM methodology. b) What are the advantages of using the DSDM methodology? c) The MOSCOW technique is used to priori

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd