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What is MongoDB TTL index?

TTL indexes automatically remove documents after a specified amount of time. They are useful for temporary data such as sessions, logs, tokens, and cache records.

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What is MongoDB and why is it used?

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What is the difference between SQL and MongoDB?

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What are Collections and Documents in MongoDB?

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Jeevan Bhargav

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This answer is calibrated for technical interviews. Verify benchmarks in local sandboxes before deploying.