At QCon London 2025, Alex Seaton from Man Group explained the transition from a high-maintenance MongoDB server farm to a serverless database solution using ArcticDB. The new system leverages Python and C++ for processing data stored in object storage. Challenges such as clock drift and distributed locking were discussed, with Conflict-Free Replicated Data Types (CRDTs) used to manage data consistency. Seaton highlighted issues with garbage collection and compaction while emphasizing ongoing improvements in object storage and concurrency models.
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