Grokking Modern API Design Interview
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Interview Question: Design a Collaborative Document API

The interview question is:

Design a Collaborative Document API.

The pressure is two people editing the same paragraph in the same second, where neither should be told to redo the work.

The conditional-write contract from Chapter 4 is correct when collisions are exceptional. A collaborative editor is different. Collisions are ordinary behavior. Returning 412 on every overlapping keystroke would turn the user's typing session into a conflict-resolution screen.

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