NDLI: A measurement study of the Wuala on-line storage service

Content Provider	IEEE Xplore Digital Library
Author	Mager, T. Biersack, E. Michiardi, P.
Copyright Year	2012
Description	Author affiliation: EURECOM, Sophia Antipolis, France (Mager, T.; Biersack, E.; Michiardi, P.)
Abstract	Wuala is a popular online backup and file sharing system that has been successfully operated for several years. Very little is known about the design and implementation of Wuala. We capture the network traffic exchanged between the machines participating in Wuala to reverse engineer the design and operation of Wuala. When Wuala was launched, it used a clever combination of centralized storage in data centers for long-term backup with peer-assisted file caching of frequently downloaded files. Large files are broken up into transmission blocks and additional transmission blocks are generated using a classical redundancy coding scheme. Multiple transmission blocks are sent in parallel to different machines and reliability is assured via a simple Automatic Repeat Request protocol on top of UDP. Recently, however, Wuala has adopted a pure client/server based architecture. Our findings and the underlying reasons are substantiated by an interview with a co-founder of Wuala. The main reasons are lower resource usage on the client side, which is important in the case of mobile terminals, a much simpler software architecture, and a drastic reduction in the cost of data transfers originating at the data center.
Starting Page	237
Ending Page	248
File Size	811782
Page Count	12
File Format	PDF
ISBN	9781467328609
e-ISBN	9781467328623
e-ISBN	9781467328616
DOI	10.1109/P2P.2012.6335804
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-09-03
Publisher Place	Spain
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Servers Encoding Peer to peer computing IP networks Cryptography Availability Maintenance engineering
Content Type	Text
Resource Type	Article

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

Simple regenerating codes: Network coding for cloud storage

Service Availability for Various Forwarded Descriptions with Dynamic Buffering on Peer-to-Peer Streaming Networks

Randomized network coding in distributed storage systems with layered overlay

Repairing Flocks in Peer-to-Peer Networks

Peer-to-peer and other service overlay networks on the internet

A Peer-to-Peer Hybrid Multicast Infrastructure for Remote Learning

OnionBots: Subverting Privacy Infrastructure for Cyber Attacks

Service Availability for P2P On-Demand Streaming with Dynamic Buffering

Proactive repair redundancy algorithms for distributed storage in P2P networks

A measurement study of the Wuala on-line storage service

Similar Documents

Simple regenerating codes: Network coding for cloud storage

Service Availability for Various Forwarded Descriptions with Dynamic Buffering on Peer-to-Peer Streaming Networks

Randomized network coding in distributed storage systems with layered overlay

Repairing Flocks in Peer-to-Peer Networks

Peer-to-peer and other service overlay networks on the internet

A Peer-to-Peer Hybrid Multicast Infrastructure for Remote Learning

OnionBots: Subverting Privacy Infrastructure for Cyber Attacks

Service Availability for P2P On-Demand Streaming with Dynamic Buffering

Proactive repair redundancy algorithms for distributed storage in P2P networks

A measurement study of the Wuala on-line storage service