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Sharding, replication & partitioningMediumSDE-2

Your likes table in DynamoDB is partitioned by post_id. When a celebrity posts, that one partition gets throttled while the table overall is mostly idle. How do you fix it?

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Answer out loud as you would in the room — clarify, give numbers, name the trade-off — then compare with the model answer.

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Design a distributed counter for likes and views Lesson: Hot keys, hot partitions and fan-out

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