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

Java, how to get values from list

how to get values from list

what is virtual address, In virtual storage systems, virtual addresses ar...

In virtual storage systems, virtual addresses are allocated to auxiliary storage locations. The use of virtual addresses permit those locations to be accessed as by they were part

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.

Explain about the spiral model, Explain about the Spiral Model This mod...

Explain about the Spiral Model This model can be considered as the model that combines the strengths of various other models. Conventional software development processes don't

Illustrate the concept of a software bus in corba, QUESTION (a) Illustr...

QUESTION (a) Illustrate the concept of a software bus in CORBA (b) Taking an example of your own, explain how component-based software engineering can allow very rapid softw

Software life cycle, A) In terms of maintenance in software life cycle, doe...

A) In terms of maintenance in software life cycle, does RUP or agile approach give  better support? Describe your answer.   B) Explain how agile development approach and RUP

Define the quality control, Quality Control Quality control is a method...

Quality Control Quality control is a method in which the product's quality is compared with standards and corrective actions taken if needed. Quality control activities focus o

Mobile application, we got the code for mobile app we need a document for t...

we got the code for mobile app we need a document for that

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