🧠 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 REST and how is it different from SOAP
• 2. Explain RESTful API design principles
• 3. What are HTTP methods and their uses in API design
• 4. What is the difference between PUT and PATCH
• 5. What are idempotent methods in REST APIs
• 6. What are status codes in REST and their significance
• 7. How do you handle errors in API responses
• 8. What is the best practice for versioning an API
• 9. What are query parameters and path parameters
• 10. What is HATEOAS and how is it used in REST APIs
• 11. What is OpenAPI (Swagger) and how is it useful
• 12. How do you design a secure REST API