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

1. Cloud Computing and Virtualization SIG
Performance in the Cloud
Wednesday, 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, Fidelity
Wednesday, January 26, 2011

3. Defining Performance
Capacity?
Page Speed?
Reliability?
Scalability?
Transaction Speed?
Code Execution Speed?
Wednesday, January 26, 2011

4. Defining Performance
Wednesday, January 26, 2011

5. Performance Matters
Wednesday, January 26, 2011

6. Capacity
Wednesday, January 26, 2011

7. Categorizing Sites by Traffic
Wednesday, January 26, 2011

8. Categorizing Sites by Traffic
Wednesday, 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%29
Wednesday, 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/topsites
Wednesday, 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/topsites
Wednesday, 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 Technologies
Wednesday, January 26, 2011

15. Web Technologies
Wednesday, January 26, 2011

16. Most Commonly Used
Wednesday, January 26, 2011

17. Key Components
Wednesday, 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 Services
Wednesday, 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 Service
Wednesday, 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.com
Wednesday, January 26, 2011