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Why do production systems use advanced concepts like caching and load balancing?

easy📝 Conceptual Q11 of 15
LLD - Advanced LLD Concepts

Why do production systems use advanced concepts like caching and load balancing?

ATo make the system harder to maintain
BTo make the system look more complex
CTo reduce the number of developers needed
DTo keep the system stable and fast under heavy use
Step-by-Step Solution
Solution:
  1. Step 1: Understand the purpose of caching and load balancing

    Caching stores data temporarily to reduce repeated work, and load balancing spreads user requests to avoid overload.
  2. Step 2: Connect these concepts to system stability and speed

    By reducing load and speeding up responses, these concepts keep the system stable and fast even with many users.
  3. Final Answer:

    To keep the system stable and fast under heavy use -> Option D
  4. Quick Check:

    Advanced concepts = stability and speed [OK]
Quick Trick: Think about system speed and stability under many users [OK]
Common Mistakes:
  • Confusing complexity with usefulness
  • Ignoring performance benefits
  • Assuming fewer developers means better design

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