Medium-HardEvaluateSystem Design Interview FrameworkMultiple Choice

What is the trade-off introduced by sharding a database by user_id?

Evaluate Tests ability to make judgments and justify decisions.

Answer Options

AData is no longer durable
BCross-shard queries (e.g., global trending) become expensive scatter-gather operations
CIndividual user queries become slower
DThe database can no longer use indexes

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This question is from the System Design Interview Framework topic (System Design).

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