Telex: Principled System Support for Write-Sharing in Collaborative Applications

Details Telex: Principled System Support for Write-Sharing in Collaborative Applications Telex: Principled System Support for Write-Sharing in Collaborative Applications

2008-05-30

arxiv.org/abs/0805.4680v3

Computer Science

Operating Systems

Scientific paper

The Telex system is designed for sharing mutable data in a distributed environment, particularly for collaborative applications. Users operate on their local, persistent replica of shared documents; they can work disconnected and suffer no network latency. The Telex approach to detect and correct conflicts is application independent, based on an action-constraint graph (ACG) that summarises the concurrency semantics of applications. The ACG is stored efficiently in a multilog structure that eliminates contention and is optimised for locality. Telex supports multiple applications and multi-document updates. The Telex system clearly separates system logic (which includes replication, views, undo, security, consistency, conflicts, and commitment) from application logic. An example application is a shared calendar for managing multi-user meetings; the system detects meeting conflicts and resolves them consistently.

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