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In a Flask app using connection pooling, you notice connections remain open indefinitely. What should you check?

medium📝 Debug Q7 of 15
Flask - Performance Optimization
In a Flask app using connection pooling, you notice connections remain open indefinitely. What should you check?
AIf the app is using Flask-Mail instead of Flask-SQLAlchemy
BIf Flask debug mode is enabled
CIf connections are properly closed or returned to the pool after use
DIf the pool size is set to zero
Step-by-Step Solution
Solution:

  1. Step 1: Understand why connections stay open

    Connections stay open if not closed or returned to the pool after use.

  2. Step 2: Identify what to check

    Check code to ensure connections are released properly to avoid leaks.

  3. Final Answer:

    If connections are properly closed or returned to the pool after use -> Option C

  4. Quick Check:

    Connection leaks cause open connections [OK]
Quick Trick: Always close connections to prevent leaks [OK]
Common Mistakes:
MISTAKES
  • Blaming debug mode for connection leaks
  • Confusing unrelated Flask extensions
  • Setting pool size to zero disables pooling but not leaks

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