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Why does caching reduce the load on a server when handling REST API requests?

easy📝 Conceptual Q11 of 15
Rest API - Caching Strategies
Why does caching reduce the load on a server when handling REST API requests?
ABecause it forces the server to recalculate data every time
BBecause it increases the number of requests the server must process
CBecause it deletes data from the server to free up space
DBecause it stores copies of responses to serve repeated requests faster
Step-by-Step Solution
Solution:

  1. Step 1: Understand caching purpose

    Caching saves copies of data or responses so the server doesn't have to create them again for repeated requests.

  2. Step 2: Effect on server load

    By serving stored copies, the server avoids extra processing, reducing its workload.

  3. Final Answer:

    Because it stores copies of responses to serve repeated requests faster -> Option D

  4. Quick Check:

    Caching reduces server work = D [OK]
Quick Trick: Caching saves repeated work by storing data copies [OK]
Common Mistakes:
MISTAKES
  • Thinking caching increases server calculations
  • Confusing caching with deleting data
  • Believing caching forces recalculation every time

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