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A time interval based consistency control algorithm for interactive groupware applications

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3 Author(s)
Rui Li ; Dept. of Comput. Sci., Texas A&M Univ., College Station, TX, USA ; Du Li ; Chengzheng Sun

Traditional concurrency control methods such as locking and serialization are not suitable for distributed interactive applications that demand fast local response. Operational transformation (OT) is the standard solution to concurrency control and consistency maintenance in group editors, an important class of interactive groupware applications. It generally trades consistency for local responsiveness, because human users can often tolerate temporary inconsistencies but do not like their interactions be lost or nondeterministically blocked. This paper presents a time interval based operational transformation algorithm (TIBOT) that overcomes the various limitations of previous related work. Our approach guarantees content convergence and is significantly more simple and efficient than existing approaches. This is achieved in a pure replicated architecture by using a linear clock and by posing some constraints on communication that are reasonable for the application domain.

Published in:

Parallel and Distributed Systems, 2004. ICPADS 2004. Proceedings. Tenth International Conference on

Date of Conference:

7-9 July 2004