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Great Caching Disasters! (and how to avoid them)

Avatar for Lisa van Gelder Lisa van Gelder
July 03, 2015
Technology
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27

Great Caching Disasters! (and how to avoid them)

Avatar for Lisa van Gelder

Lisa van Gelder

July 03, 2015
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Transcript

  1. Great Caching Disasters!!! And how to avoid them.

  2. About me Lisa van Gelder VP of Engineering at Stride

    [email protected] @techbint

  3. The case of the disappearing website

  4. None

  5. Lessons • If caching is important, monitor it! • Never

    build a cache invalidation system
  6. None

  7. Keep caching simple

  8. Cache for the smallest amount of time you can get

    away with

  9. So we built a 3-day cache

  10. None
  11. None

  12. Fix your sql! Don’t cover up terrible queries with caching.

  13. Cache for 1 minute

  14. None

  15. <div class="comment__timestamp"> <!-- microapp-href name="discussion" url="/comment- permalink/51075599" —> ... </div>

  16. Only cache static content

  17. None

  18. Caching should be automatic

  19. Epilogue

  20. Lessons • Cache for 1 minute • Cache static content

    • Never build a clear cache system!* * Unless you are a cdn