'Consensus problem' presentation slideshows

Failure Detectors

946 views • 79 slides

Cloud Computing Concepts

644 views • 57 slides

Lecture IX: Coordination And Agreement

Lecture IX: Coordination And Agreement. CMPT 401 Summer 2007 Dr. Alexandra Fedorova. A Replicated Service. servers. client. network. slave. W. R. master. W. R. W. slave. client. data replication. write. read. W. W. R. A Need For Coordination And Agreement. servers. client.

634 views • 49 slides

Wait-Free Consensus

Wait-Free Consensus. CPSC 661 Fall 2003 Supervised by: Lisa Higham Presented by: Wei Wei Zheng Nuha Kamaluddeen. Outline. Deterministic Wait-Free Impossibility Universality Randomized Wait-Free Robust weak shared coin Multi Consensus Game Use randomizes solution

615 views • 39 slides

Computer Science 425 Distributed Systems (Fall 2009)

541 views • 37 slides

Contract Signing Protocols

CS 395T. Contract Signing Protocols. Real-World Fair Exchange. Both parties want to sign the deal Neither wants to commit first . Immunity deal. General Setting. Two parties agree on the items to exchange, each will release his item if the other releases his Physical solution is easy

437 views • 33 slides

Consensus in an Asynchronous System

Consensus in an Asynchronous System. Impossible to achieve! even a single failed process is enough to avoid the system from reaching agreement Proved in a now-famous result by Fischer, Lynch and Patterson, 1983 (FLP). Recall. Each process p has a state

355 views • 22 slides

Sliding window protocol

Sliding window protocol. The sender continues the send action without receiving the acknowledgements of at most w messages ( w > 0), w is called the window size . . {program for process S} define next, last, w : integer ; initially next = 0, last = -1, w > 0

1.81k views • 19 slides

Asynchronous Consensus

Asynchronous Consensus. (Some Slides borrowed from ppt on Web.(by Ken Birman ) ). Consensus problem. In the Consensus problem, all correct processes propose a value and must reach an irrevocable decision on some value that is related to the proposed values [Fisher 1983]

309 views • 14 slides