System Re-Build

Changes at Subversion Revision Control System

The Subversion team have added a custom replication system based on the Paxos algorithm for reaching a consensus in a network of unreliable processors. Now, whenever the user makes a change to a repository, the new data is copied to several different data centres before Subversion reports that the commit has succeeded.

The team have also rebuilt Subversion's HTTP-based protocol with an emphasis on optimising this service for browser access. New caching headers have been added, which can be manually turned on and off using the google-cache-control property.

Jessica Thornsby

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