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 methodology, how to choose a software methodology for a software p...

how to choose a software methodology for a software project

What are quality management activities, What are Quality management activit...

What are Quality management activities. Quality assurance Establish organisational process and standards for quality. Quality planning Select applicab

Explain data collection, Data collection A metrics programme should be ...

Data collection A metrics programme should be based on a set of product and process data. Data should be collected immediately (not in retrospect) and, if possible, automati

Discrete mathematics, Within the discussion board area, respond to the foll...

Within the discussion board area, respond to the following questions with your thoughts, ideas, and comments. This will be the foundation for future discussions by your fellow clas

Software Engineering environments, 1.1 Discuss possible ramifications of th...

1.1 Discuss possible ramifications of these opposing objectives on the project. What would you do if you were the manager?

What is intrusive testing, Testing that collects timing and processing info...

Testing that collects timing and processing information during program implementation that might change the behavior of the software from its behavior in a actual environment. Usua

What are the benefits of prototyping, What are the benefits of prototyping?...

What are the benefits of prototyping? i. Prototype serves as a basis for deriving system specification. ii. Design quality can be improved. iii. System can be maintained

Inmagic plus- microcomputer based software package, INMAGIC Plus: INMA...

INMAGIC Plus: INMAGIC Plus is a microcomputer- based software package designed to build, maintain and use textual databases including bibliographic databases. As a generalised

Srs, Why is SRS document known as black box specification of a system

Why is SRS document known as black box specification of a system

Software testing, Hello, I have an assignment and have to derive a regular ...

Hello, I have an assignment and have to derive a regular expression based on a CFG provided but i dont know how. please help.

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