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What will happen if you set SEND_FILE_MAX_AGE_DEFAULT to 0 in a Flask app?

medium📝 component behavior Q5 of 15
Flask - Performance Optimization
What will happen if you set SEND_FILE_MAX_AGE_DEFAULT to 0 in a Flask app?
AStatic files will be cached indefinitely
BFlask will raise a configuration error
CStatic files will not be cached by browsers
DStatic files will be compressed automatically
Step-by-Step Solution
Solution:

  1. Step 1: Interpret zero cache duration

    Setting to 0 means no caching allowed by browsers.

  2. Step 2: Exclude other effects

    No error occurs and compression is unrelated to this setting.

  3. Final Answer:

    Static files will not be cached by browsers -> Option C

  4. Quick Check:

    Zero cache duration disables browser caching [OK]
Quick Trick: 0 disables caching for static files [OK]
Common Mistakes:
MISTAKES
  • Thinking 0 means infinite caching
  • Expecting errors on zero
  • Confusing caching with compression

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