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Why might caching not improve performance if the cached data changes frequently?

medium📝 Debug Q7 of 15
Spring Boot - Caching
Why might caching not improve performance if the cached data changes frequently?
ABecause caching only works for static files
BBecause caching increases network latency
CBecause caching disables database updates
DBecause cache invalidation causes frequent reloads, negating benefits
Step-by-Step Solution
Solution:

  1. Step 1: Understand cache invalidation impact

    If data changes often, cache must be cleared and refreshed frequently, causing repeated loads.

  2. Step 2: Eliminate incorrect ideas

    Caching works beyond static files; it does not disable updates or increase network latency.

  3. Final Answer:

    Because cache invalidation causes frequent reloads, negating benefits -> Option D

  4. Quick Check:

    Frequent data changes reduce caching benefits due to invalidation [OK]
Quick Trick: Frequent data changes reduce caching effectiveness [OK]
Common Mistakes:
  • Thinking caching only works for static files
  • Believing caching blocks database updates
  • Assuming caching adds network delay

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