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

Software management, i have coursework on software management and dont know...

i have coursework on software management and dont know how to go about it. I want to find out if you will be able to help me on that. The task is to investgate(research informed pa

What is data modelling, What is data modelling? Data modeling is the ba...

What is data modelling? Data modeling is the basic step in the examine modeling. In data modeling the data objects are examined independently of processing. The data model s

What are the merits of incremental model, What are the merits of incrementa...

What are the merits of incremental model? i. The incremental model can be adopted when there is less number of people included in the project. ii. Technical risks can be ma

Explain token count, Token count: -  A program is considered to be series o...

Token count: -  A program is considered to be series of tokens and if we count the number of tokens, some interesting results might be emerge. Tokens are classified as either opera

What is a document version, What is a document version? Ans) A document ...

What is a document version? Ans) A document version is a first release (or complete re-release) of a document, as opposed to a revision resulting from issuing change pages to a

Software restructuring, Software restructuring Software restructuring c...

Software restructuring Software restructuring changes source code and / or data an effort to make it amenable to future changes. In general, restructuring does not change the o

What are the characteristics of software measurement, What are the characte...

What are the characteristics of software measurement? Measured property Object of measurement Source of measure Purpose measurement Context of measurement.

What are the drawbacks of rad model, Mention some of the drawbacks of RAD m...

Mention some of the drawbacks of RAD model. Unuseful for a large-scale projects. Interest of developers & customers are necessary. Not useful and perfect when technica

Data dictionary, data dictionary on library management system

data dictionary on library management system

What does data dictionary contains, What does data dictionary contains? ...

What does data dictionary contains? Name: The primary name of the data. Alias: other names used Where-used/How-used: A record of processes that use the data or control it

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