Daily Design #2/Wed, Sep 16
Data model round
One problem, the same for every engineer today. About 5 minutes, graded instantly, ranked on today's board.
5 minData modeling0 played today
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Today's prompt
Design the data model for a chat app's message storage: 1:1 and group threads, with fast 'recent messages per conversation' reads.
50M DAUReads dominateMessages immutable
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