September 14, 2011 09:00 ET

What's New in Subversion 1.7

WANdisco, a Leading Corporate Sponsor of the Apache Subversion Project Updates Users on the Eve of This Major New Release

SAN RAMON, CA--(Marketwire - Sep 14, 2011) - WANdisco, a leading provider of Apache Subversion-based software and services for the enterprise, and a major corporate sponsor of the Subversion project today announced what it believes to be the most important enhancements for Subversion users in 1.7. WANdisco staff, including Hyrum Wright, the company's Director of Open Source and Subversion's release manager since 2008, along with senior Subversion developers Phillip Martin and Julian Foad made significant contributions to the planning and delivery of this major new release.

"Subversion 1.7 represents a major step forward in addressing the scalability and performance issues encountered by large Subversion deployments, especially those found on the client-side," said Hyrum Wright, Subversion's release manager and WANdisco's Director of Open Source. "The working copy metadata rewrite (WC-NG) and HTTPv2 enhancements were key to this effort."

Key Subversion 1.7 enhancements include:

  • HTTPv2 - a protocol rewrite designed to enhance performance between Subversion clients and the server by reducing the number of round trips between the client and the server with every request. Early reviews indicate that performance improves significantly, particularly over high latency networks, as a result of reducing the chattiness of this most widely used Subversion protocol.
  • WC-NG - a rewrite of the working copy library that enhances performance by centralizing metadata storage so that Subversion operations don't have to walk the entire directory tree to gather the information about the working copy and apply changes to it. WC-NG also provides a foundation for supporting features such as shelving and offline commits in future releases.
  • Merge-tracking enhancements - Subversion 1.7 provides over 40 improvements to merge tracking, on top of the improvements that were added in the 1.5.x and 1.6.x series of releases. One of the most significant enhancements has been isolation of subtree mergeinfo updates to only the subtrees affected by a merge, rather than updating all subtree merge info.

    WANdisco will be sponsoring a number of additional enhancements to Subversion 1.7's branching and merging capabilities, including the introduction of the "newmerge" command to be presented on September 28, during the free webinar -- Introducing Subversion 1.7 -- detailed below.

  • svnrdump - a new client tool that provides the same functionality as svnadmin dump and svnadmin load, but on remote repositories. There's no need for administrator access to the source or target repository on the remote server.

A complete list of what's new is available at

Free Webinar: Introducing Subversion 1.7

Don't forget to register for Introducing Subversion 1.7 -- a free webinar taking place on September 28. Attendees will be among the first to learn exactly what features this major new release offers and how to make the most of them. Leading industry journalist Adrian Bridgwater hosts as Hyrum Wright, Subversion's release manager and other core developers present during this free one-hour session.

Webinar attendees will also learn about an exciting new project that builds on Subversion 1.7 with world-class merge capabilities incorporated under the "newmerge" command, as well as automated update and commit features.

The webinar takes place on Wednesday, September 28 at 9am PDT. Attendance is free, but demand for this event will be high and space is limited. Register now at:

About WANdisco

WANdisco is a leading provider of Apache Subversion-based software and services for the enterprise. The company's products include: uberSVN -- the new open ALM platform for Subversion, Subversion MultiSite, Subversion Access Control and Subversion Clustering. Fortune Global 1000 companies such as AT&T, Intel, Honda, Nokia, Juniper Networks and Motorola rely on WANdisco's Subversion solutions for enterprise-class performance, scalability and 24-by-7 availability. A recent Forrester Total Economic Impact (TEI) study of WANdisco's Subversion MultiSite revealed a 167% return on investment with a nine-month payback period. Subversion is recognized by Forrester as the sole leader in the Standalone Software Configuration Management (SCM) category. For more information, please visit us at:

About Subversion

Apache Subversion (SVN) is a version control system initiated in 2000. It is used to maintain current and historical versions of files such as source code, web pages, and documentation. Its goal is to be a mostly-compatible successor to the widely used Concurrent Versions System (CVS). In a 2007 report by Forrester Research, Subversion was recognized as the sole leader in the Standalone Software Configuration Management (SCM) category and a strong performer in the Software Configuration and Change Management (SCCM) category. Subversion is released under the Apache License, making it free software. For more information, please visit:

Subversion and the Subversion logo are trademarks of the Apache Software Foundation.

All product and company names herein may be trademarks of their registered owners.

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