Great Caching Disasters! (and how to avoid them)

1. Great Caching Disasters!!! And how to avoid them.
2. About me Lisa van Gelder VP of Engineering at Stride lisa@stridenyc.com @techbint
3. The case of the disappearing website
5. Lessons • If caching is important, monitor it! • Never build a cache invalidation system
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
12. Fix your sql! Don’t cover up terrible queries with caching.
13. Cache for 1 minute
15. <div class="comment__timestamp"> <!-- microapp-href name="discussion" url="/comment- permalink/51075599" —> ... </div>
16. Only cache static content
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