14 Sep 2023
Online MongoDB migration
MongoDB is the most popular database used at Allegro. We have hundreds of MongoDB databases running on our on—premise servers. In 2022 we decided that we need to migrate all our MongoDB databases from existing shared clusters to new MongoDB clusters hosted on Kubernetes pods with separated resources. To perform the migration of all databases we needed a tool for transfering all the data and keeping consistency between old and new databases. That’s how mongo-migration-stream project was born.
