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The "CassandraUsers" page has been changed by jeremyhanna. http://wiki.apache.org/cassandra/CassandraUsers?action=diff&rev1=17&rev2=18 -------------------------------------------------- * '''Digg''' - The recent V4 relaunch is 100% Cassandra. We are running on multiple clusters internally, our largest one is 40 nodes spanning multiple datacenters. We also have 1 core commiter on staff. * '''Facebook''' - Facebook uses their internally developed Cassandra and has the largest known cluster in operation of around 150 nodes. See the [[http://www.cs.cornell.edu/projects/ladis2009/papers/lakshman-ladis2009.pdf|Cassandra paper]] and recent [[http://www.mail-archive.com/[email protected]/msg04048.html|mention]] of their cluster * '''[[http://www.visualdna.com/|Imagini]]''' - We use Cassandra to store all real-time data for our ad targeting technology (VisualDNA). We run a Cassandra cluster on Amazon EC2 nodes across multiple availability zones. We also use Hadoop for batch processing, integrated with Cassandra. + * '''Ooyala''' - Ooyala uses Cassandra as the backing store for a near-realtime video analytics platform, which allows publishers to analyze and optimize the performance of their online video content. (See the [[http://go.ooyala.com/Cassandra.html|press release]].) * '''Rackspace''' - Rackspace uses Cassandra for a variety of internal needs. Several Rackspace employees are also core committers and contributors on the project. * '''reddit''' - Using Cassandra as a persistent cache and in the process of migrating other data-types from Postgres into Cassandra * '''!SimpleGeo''' - We use Cassandra as our core datastore for providing location-based services and products. We run Cassandra in multiple availability zones within Amazon EC2. Some code can be found at http://github.com/simplegeo * '''Twitter''' - "We're using Cassandra in production for a bunch of things at Twitter." For details see [[http://engineering.twitter.com/2010/07/cassandra-at-twitter-today.html|this blog post]] from July, 2010. - * '''Ooyala''' - Ooyala uses Cassandra as the backing store for a near-realtime video analytics platform, which allows publishers to analyze and optimize the performance of their online video content. (See the [[http://go.ooyala.com/Cassandra.html|press release]].)
