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Going Viral: Flash Crowds in an Open CDN

Learn about flash crowds and their impact on CDN performance, cooperation in caching, provisioning resources for crowds, and more using CoralCDN technology. Explore examples, benefits of cooperation, and strategies to detect and mitigate flash crowds.

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Going Viral: Flash Crowds in an Open CDN

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Presentation Transcript

  1. Going Viral:Flash Crowds in an Open CDN

  2. What is a Flash Crowd?

  3. Key Questions

  4. CoralCDN

  5. CoralCDN

  6. The Data

  7. Finding Crowds

  8. Crowd Sources

  9. Common Referrers

  10. Common Referrers

  11. Common Referrers

  12. Common Referrers

  13. CDN Caching Strategies

  14. Cooperation in Caching

  15. Benefits of Cooperation?

  16. Clients Use Many Proxies

  17. Crowds Contain Many Objects

  18. Benefits from Cooperation

  19. Provisioning Resources For Crowds

  20. Examples of Resource Provisioning

  21. Required Resource Spin-up Time

  22. Conclusions

  23. Questions?

  24. Extra Slides / Charts

  25. Actual Spin-up Times on EC2

  26. How Fast is Fast?

  27. Origin Hits Saved by Cooperation

  28. Bursty Redirection

  29. Clients Distributed Widely

  30. Detecting Crowds

  31. Crowd Mitigation/Insurance

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