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How FullContact Migrated from MongoDB to Cassandra

12.20.2013
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This recent post from Michael Rose at FullContact details the contact management software's migration from MongoDB to Cassandra. It's a detailed account, starting with the background of what led to the decision - it wasn't a problem with MongoDB so much as a few early mistakes that grew over time - various attempts at solving the problems they faced, and finally how they went about migrating to Cassandra, including code and data to document their improvements.

It's a particular solution based on a particular set of problems, so it isn't a universal tutorial by any means, but there is a lot of value in such a thorough account of how one team worked through such a significant project. Check out Rose's full post for the whole story and some insight into how to manage database conversions.