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 depth of conditional nesting, Depth of conditional nesting Thi...

Depth of conditional nesting This is a measure of the depth of nesting of if-statements in a program. Deeply nested if statements are hard to understand and are potentially er

What is change management tools, What is Change management tools? Chang...

What is Change management tools? Change management is a process in which it can be modelled and integrated with a version management system. Change management tools Fo

Name certain common tools which are used for load testing, Name certain com...

Name certain common tools which are used for load testing. - Rational Performance Tester by IBM Rational - Open STA an Open Source tool - LoadRunner by HP - Silk Perfo

Activity and use case diagram, The Application You should develop your p...

The Application You should develop your program using incremental development. Develop your program a little bit at a time and keep testing it. Save a working version before mak

Compare the productivity and difficulty, Q. Compare the Productivity and di...

Q. Compare the Productivity and difficulty? Productivity refers to metrics as well as measures of output from production processes per unit of input. Productivity P perhaps c

System analyst, Explain the role and functions of a Systems Analyst in the ...

Explain the role and functions of a Systems Analyst in the overall project development.

Full form of fast, FAST stands for :- FAST :- Facilitated Application...

FAST stands for :- FAST :- Facilitated Application Specification Technique

Explain the structured requirements definition, Explain the Structured Requ...

Explain the Structured Requirements Definition Structured Requirements definition is an approach to perform study about complete system and its various sub-systems, external ou

Calculate the information flow index of individual modules, Q. For the stru...

Q. For the structural chart given in fig.1 calculate the Information Flow index of individual modules as well as whole software. Total information flow = IF (main) + IF (A

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