📝 **Question:** Your 'user lookup by email' endpoint gets hammered by attackers guessing random emails. 99.9% are misses but each costs a DB query. Best optimization?
📋 Pick the right answer.
💡 **Hint:** Re-read the theory above if unsure.
📝 **Question:** Your 'user lookup by email' endpoint gets hammered by attackers guessing random emails. 99.9% are misses but each costs a DB query. Best optimization?
📋 Pick the right answer.
💡 **Hint:** Re-read the theory above if unsure.
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