MongoDB: How We Did It – Reanimating Identity at AOL

MongoDB: How We Did It – Reanimating Identity at AOL

Doug Haydon

October 14, 2014

AOL experienced explosive growth and needed a new database that was both flexible and easy to deploy with little effort. They chose MongoDB. Due to the complexity of internal systems and the data, most of the migration process was spent building a new identity platform and adapters for legacy apps to talk to MongoDB. Systems were migrated in 4 phases to ensure that users were not impacted during the switch. Turning on dual reads/writes to both legacy databases and MongoDB also helped get production traffic into MongoDB during the process. Ultimately, the project was successful with the help of MongoDB support. Today, the team has 15 shards, with 60-70 GB per shard.

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