Resource sharing for replicated synchronous groupware

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Resource sharing for replicated synchronous groupware

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IEEE/ACM Transactions on Networking (TON) archive
Volume 9 , Issue 6 (December 2001) table of contents

Pages: 833 - 843

Year of Publication: 2001

ISSN:1063-6692

Authors

James Begole	Sun Microsystems Laboratories, Palo Alto, CA
Randall B. Smith	Sun Microsystems Laboratories, Palo Alto, CA
Craig A. Struble	Marquette University, Milwaukee, WI
Clifford A. Shaffer	Virginia Polytechnic Institute and State University, Blacksburg, VA

Publisher

IEEE Press Piscataway, NJ, USA

Bibliometrics

Downloads (6 Weeks): 13, Downloads (12 Months): 49, Citation Count: 6

Additional Information:

abstract references cited by index terms collaborative colleagues

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DOI Bookmark:	10.1109/90.974535

ABSTRACT

We describe problems associated with accessing data resources external to the application, which we term externalities, in replicated synchronous collaborative applications. Accessing externalities such as files, databases, network connections, environment variables, and the system clock is not as straightforward in replicated collaborative software as in single-user applications or centralized collaborative systems. We describe ad hoc solutions that add to development cost and complexity because the developer must program different behavior for different replicas.We introduce a novel general approach to accessing externalities uniformly in a replicated collaborative system. The approach uses a semireplicated architecture where the actual externality resides at a single location and is accessed via replicated proxies. This approach allows developers of replicated synchronous groupware to 1) use similar externality access mechanisms as in traditional single-user applications, and 2) program all replicas to execute the same behavior. We describe a general design for proxied access to read-only, write-only, and read-write externalities and discuss the tradeoffs of this semireplicated approach over full, literal replication and the class of applications to which this approach can be successfully applied. We also describe details of a prototype implementation of this approach within a replicated collaboration-transparency system, called Flexible JAMM (Java Applets Made Multiuser).

REFERENCES

Note: OCR errors may be found in this Reference List extracted from the full text article. ACM has opted to expose the complete List rather than only correct and linked references.

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	Madhu C. Reddy , Paul Dourish , Wanda Pratt, Temporality in Medical Work: Time also Matters, Computer Supported Cooperative Work, v.15 n.1, p.29-53, February 2006
	Du Li , Jiajun Lu, A lightweight approach to transparent sharing of familiar single-user editors, Proceedings of the 2006 20th anniversary conference on Computer supported cooperative work, November 04-08, 2006, Banff, Alberta, Canada
	Sasa Junuzovic , Prasun Dewan, Response times in N-user replicated, centralized, and proximity-based hybrid collaboration architectures, Proceedings of the 2006 20th anniversary conference on Computer supported cooperative work, November 04-08, 2006, Banff, Alberta, Canada
	Chengzheng Sun , Steven Xia , David Sun , David Chen , Haifeng Shen , Wentong Cai, Transparent adaptation of single-user applications for multi-user real-time collaboration, ACM Transactions on Computer-Human Interaction (TOCHI), v.13 n.4, p.531-582, December 2006
	Kai Lin , David Chen , Chengzheng Sun , Geoff Dromey, Maintaining constraints in collaborative graphic systems: the CoGSE approach, Proceedings of the ninth conference on European Conference on Computer Supported Cooperative Work, p.185-204, September 18-22, 2005, Paris, France