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Architecture
1. Explain Redis's single-threaded model. Why is it fast despite being single-threaded, and how has this changed in Redis 6+?
Level: Expert | Frequency: High
2. What changed in Redis 6 regarding threading?
Level: Expert | Frequency: High
3. What is the Redis event loop? What library powers it?
Level: Expert | Frequency: High
4. What is the difference between redis-server and redis-cli?
Level: Expert | Frequency: High
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Monitoring & Debugging