Man Group ditched their struggling MongoDB cluster for a blazingly fast "thick client" architecture that streams data at 40GB/s, built directly on object storage. This setup tackles the massive scale of hedge fund data, moving past MongoDB's limitations and embracing truly "serverless" database concepts.
They delved into topics like atomicity, versioning, and managing global state on object storage, concluding that distributed locks are, in fact, a trap! The future looks bright with atomic operations and conditional writes heading to S3.
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