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Testing Scalability in the Cloud
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Testing Scalability in the Cloud

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Dan Bartow of SOASTA talks about common scalability issues in cloud-based applications and how to address performance problems.

Dan Bartow of SOASTA talks about common scalability issues in cloud-based applications and how to address performance problems.


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  • 1. Cloud Computing and Virtualization SIG Performance in the CloudWednesday, January 26, 2011
  • 2. About the Speaker SOASTA VP Product Management CloudTest Evangelist Intuit Sr. Manger, Engineering TurboTax Online and E-com ATG Sr. Deployment Engineer American Airlines, Best Buy, Target, Walmart, Turbotax Online, QuickenOnline, MySpace, Dennyʼs, Dominos, Mattel, Hallmark, FAA, US Army, AT&T Wireless, Alcatel, Newsweek, Oprah, NeimanMarcus, SBC, Plantronics, Kodak, JCrew, Cingular, Newell Rubbermaid, Lockheed Martin, FidelityWednesday, January 26, 2011
  • 3. Defining Performance Capacity? Page Speed? Reliability? Scalability? Transaction Speed? Code Execution Speed?Wednesday, January 26, 2011
  • 4. Defining PerformanceWednesday, January 26, 2011
  • 5. Performance MattersWednesday, January 26, 2011
  • 6. CapacityWednesday, January 26, 2011
  • 7. Categorizing Sites by TrafficWednesday, January 26, 2011
  • 8. Categorizing Sites by TrafficWednesday, January 26, 2011
  • 9. Categorizing Sites by Traffic The top 10 websites get 42% of the visitors to the top 100, and 21% of the visitors to the top 1,000* The top 100 get 50% of the visitors to the top 1,000. I.e. the top 100 together get as many visitors as the following 900 websites counted together* If you want to break into the top 100 websites, youʼll need at least 22 million visitors per month. If you “only” aim for the top 1,000, youʼll need at least 4.1 million visitors per month* Gee, that canʼt be so hard, can it…?* *SOURCE: http://royal.pingdom.com/2010/07/05/what-it-takes-to-be-a-top-100-website-charts/? utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+RoyalPingdom+%28Royal+Pingdom%29Wednesday, January 26, 2011
  • 10. Categorizing Sites by Traffic Top 10 – Mega Sites* Google Facebook Youtube Yahoo! Windows Live Baidu.com Wikipedia Blogger.com Twitter QQ.com *SOURCE: Alexa Top 500 Worldwide - http://www.alexa.com/topsitesWednesday, January 26, 2011
  • 11. Categorizing Sites by Traffic Top 10-500 – Massive Sites MSN CNN Reddit MLB Amazon.com ESPN Mashable CBS Wordpress Imageshack Skype Expedia eBay GoDaddy Amazon WS BestBuy LinkedIn Huffington Post Yelp FedEx Craigslist CNET WSJ USA Today MySpace Chase Match.com LastFM Flickr Ning Walmart NewEgg Apple Dell Salesforce MTV Paypal HP AT&T AmericanExpress *SOURCE: Alexa Top 500 Worldwide - http://www.alexa.com/topsitesWednesday, January 26, 2011
  • 12. Categorizing Sites by Traffic Top 500 – 2000 XL Sites Top 2000-10000 Large Sites Orbitz Dominos Travelocity Avis NBA Mint United WhiteHouse.gov AmericanAirlines Marriott NHL *SOURCE: Alexa - http://www.alexa.com/Wednesday, January 26, 2011
  • 13. The Point? Where should we focus the performance engineering efforts?Wednesday, January 26, 2011
  • 14. Web TechnologiesWednesday, January 26, 2011
  • 15. Web TechnologiesWednesday, January 26, 2011
  • 16. Most Commonly UsedWednesday, January 26, 2011
  • 17. Key ComponentsWednesday, January 26, 2011
  • 18. Where Does it Break?Wednesday, January 26, 2011
  • 19. Where Does it Break? Load Balancer Database Bandwidth Web/App Servers Connected ServicesWednesday, January 26, 2011
  • 20. Case Studies AAA Game Developer - Drupal in the Cloud - Webserver Contention (Varnish) National Geographically Distributed Government Application - Load Balancer / SSL Problems Large US Toy Retailer - Glossy Images in Drupal One of the Worldʼs Largest Retailers - 3rd Party Connected ServiceWednesday, January 26, 2011
  • 21. Questions?Wednesday, January 26, 2011
  • 22. Contact Information Dan Bartow VP Product Management CloudTest Evangelist SOASTA Inc. Twitter: www.twitter.com/PerfDan LinkedIn: www.linkedin.com/in/danbartow/ Web/Blog: www.soasta.comWednesday, January 26, 2011