Design document layer with undo/redo

Q: Design document layer with undo/redo

This question evaluates understanding of data structures and algorithmic design for state management, transactional batch semantics, and efficient undo/redo and batch-undo operations within a document layer.

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Design a document layer that supports applying operations and undoing them efficiently. Extend the design to support commit-batch functionality and optimize batch undo. How would you add redo capability to the document layer while maintaining performance guarantees?

Design document layer with undo/redo

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