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Digg Moves From MySQL to NoSQL

Mar 12, 2010, 23:02 (2 Talkback[s])
(Other stories by Sean Michael Kerner)

"Social networking and voting site Digg is rewriting its underlying software infrastructure in an effort to improve performance and scalability. Part of that effort involves moving away from the MySQL database that has helped to power Digg since its creation.

"In MySQL's place, Digg is going with an open source NoSQL non-relational database called Cassandra that was originally created by Facebook. As part of the migration effort from MySQL to Cassandra, Digg developers built a tool to help move data from one database to the other. The tool could soon be open source, helping other developers make the same move.

""We built a tool that we call 'transcribe' that takes advantage of Hadoop to bulk import from MySQL to Cassandra," John Quinn, vice president of engineering at Digg, told InternetNews.com. "We'll be releasing that to the open source community very soon."

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