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Build a serverless ACID database with this one neat trick (atomic PutIfAbsent)

Thanks to its simplicity, in this post we'll implement a Delta Lake-inspired serverless ACID database in 500 lines of Go code with zero dependencies. Indeed a good exercise for the reader would be to implement this interface for other blob storage providers and see your serverless cloud database in action! A real Delta Lake implementation would store data in-memory in Apache Arrow format, and write to disk as Parquet.

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