eHarmony - Customer Case Study

eHarmony uses MongoDB to help singles find their soulmates. The Compatibility Matching System crunches hundreds of traits and preferences to generate over 3 billion potential matches per day. By migrating from a relational database to MongoDB, eHarmony reduced the time to match by 95% — from 2+ weeks to under 12 hours — to make some of the happiest couples on the planet. Since migrating to MongoDB, eHarmony has increased communication between users by 30%, paid subscriptions by 50% and increased unique visitors by 60% year over year.