MongoDB Powers Foursquare
MongoDB is an open source database, one of several called NoSQL systems (read about that in this post by Paul Ramsey). It’s interesting in geo since it has a geo type and has a new release, 1.6. And, it’s also interesting because it powers Foursquare.
Why do I bring this up? Mostly because I suspect a large proportion of readers have yet to hear about this new class of databases and their role in the social networking space. MongoDB has friends named CouchDB and Cassandra. I can’t say I fully understand how these may play out in our work, but I think readers should know they are out there powering some big implementations.