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

What is customer (end user), What is Customer (end user)? Ans) The organ...

What is Customer (end user)? Ans) The organization or individual, internal or external to the producing organization that takes the product.

Iterative enhancement and evolutionary development model, Q. Differentiate ...

Q. Differentiate between iterative Enhancement Model and Evolutionary Development model. Ans. Iterative Enhancement Model: This model has the similar phases as the waterfall

Define design process, Define design process. Design process is a seque...

Define design process. Design process is a sequence of steps carried by which the requirements are translated into a system or software model.

Define encapsulation, Encapsulation An object expresses the data and i...

Encapsulation An object expresses the data and information it contains and supports a well described abstraction. Encapsulation leads to the separation of the interface and ex

What are the objectives of analysis modelling, What are the objectives of A...

What are the objectives of Analysis modelling? i. To explain what the customer requires. ii. To establish a basis for the creation of software design. iii. To devise a se

The worker pool multi-threading architecture, QUESTION (a) Compare the ...

QUESTION (a) Compare the worker pool multi-threading architecture with the thread-per-request architecture. (b) What thread operations are the most significant in cost? (

K-map, m2+m3+m5+m7+m12+m8+m9 simplify using k-map

m2+m3+m5+m7+m12+m8+m9 simplify using k-map

What does data abstraction contains, What does Data abstraction contains? ...

What does Data abstraction contains? A Data abstraction is a named collection of data that defines a data object Eg: door Attributes: door type, Opening mechanism, Swing di

Database mapping, database mapping from class to database

database mapping from class to database

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