🧠 Caching – System Design Topics

This section covers all caching-related topics in system design: how caching works, different strategies, tools like Redis and Memcached, cache eviction policies, and real-world implementation patterns.

• 1. What is Caching?
• 2. What is Redis Cache?
• 3. What is ResultSet Caching?
• 4. List some Cache Writing Strategies?
• 5. Explain Cache Invalidations
• 6. What is Cache Stampede?
• 7. What is difference between Cache replacement vs Cache Invalidation?
• 8. Is it difficult to do Cache Invalidations?
• 9. What is LRU vs LFU Cache Replacement Algorithms?
• 10. Compare Caching at Business Layer vs Caching at Data Layer?