Redis Cheat Sheet/Check if key exists

Return how many specified keys exist.

Section: Keys and expiration

Check if key exists

bash
bash
EXISTS user:1

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Delete keys lazily in background threads.
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Return the Redis type stored at a key.
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Find matching keys. Use only on small datasets.
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Cursor-based key iteration for production-safe scanning.
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Pick an arbitrary key from the current DB.
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