NDLI: Self-adjusting quorum systems for byzantine fault tolerance

Please wait, while we are loading the content...

Self-adjusting quorum systems for byzantine fault tolerance

Content Provider	Semantic Scholar
Author	Pierce, Evelyn Tumlin Alvisi, Lorenzo
Copyright Year	2000
Abstract	The purpose of this work has been to design protocols for a data service that tolerates Byzantine server faults by shifting between multiple tolerance modes at run time, monitoring itself for faulty server behavior and dynamically adjusting its own tolerance capabilities accordingly. Our goal is a system that runs in an efficient low-fault mode most of the time, but can adjust itself to cope with new faults as they occur. Our approach is based on the masking quorum systems of Malkhi and Reiter. Like the protocols originally proposed for these systems, our techniques are relatively economical in that updates and reads need to be performed only at a subset (“quorum”) of data servers, thus decreasing the workload on individual servers and simplifying the recovery process when failures occur. However, our protocols implement the following additional capabilities: (1) Strengthened read and write protocols for serializability of completed operations. (2) Protocols for dynamically adjusting the threshold (and thus quorum size) of threshold masking quorum systems in response to information about the number and/or probability of faults in the system. (3) Protocols for detecting Byzantine server behavior in threshold masking quorum systems. As a subsidiary goal, we have sought to make our methods not only effective against random faulty server behavior, but also resistant to sabotage by a deliberate adversary. To this end, we have limited our use of standard assumptions, such as independence of failures and a priori limits on the number of faults, that restrict the applicability of many Byzantine fault tolerance techniques to questions of security.
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://www.cs.utexas.edu/ftp/pub/techreports/tr01-07.ps.Z
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

Central Library (ISO-9001:2015 Certified)
Indian Institute of Technology Kharagpur
Kharagpur, West Bengal, India | PIN - 721302

See location in the Map
03222 282435
Mail: support@ndl.gov.in

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in