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In the world of modern applications, data is rarely static. It's constantly being created, updated, and deleted. For many applications, knowing about these changes as they happen is crucial. This is where MongoDB Change Streams come in. They provide ...

Recently, my team and I managed to migrate millions of our users' data with no downtime required. In this post, I'm going to share why we did it, how we did it, and what we've learned from this. Background -- Why Do We Need To Migrate, anyway? Initia...
