Web Scalability & Performance: Real Life Lessons

Following is a presentation that I made at TechWeekend in Pune on 5th September. About sixty hard-core technical geeks were present at the sessions. Following is the presentation that I made. Feel free to share.Web Scalability & Performance
You can reach me on Twitter @mukulneetika .

Top 10 Largest Databases in the World

Very interesting list "Top 10 Largest Databases in the World":

8. Amazon

By the Numbers
* 59 million active customers
* More than 42 terabytes of data

7. YouTube

By the Numbers
* 100 million videos watched per day
* 65,000 videos added each day
* 60% of all videos watched online
* At least 45 terabytes of videos

5. Sprint

By the Numbers
* 2.85 trillion database rows.
* 365 million call detail records processed per day
* At peak, 70,000 call detail record insertions per second

4. Google

Although there is not much known about the true size of Google's database (Google keeps their information locked away in a vault that would put Fort Knox to shame), there is much known about the amount of and types of information Google collects.

By the Numbers
* 91 million searches per day
* accounts for 50% of all internet searches
* Virtual profiles of countless number of users

3. AT&T

By the Numbers
* 323 terabytes of information
* 1.9 trillion phone call records

1. World Data Centre for Climate

By the Numbers
* 220 terabytes of web data
* 6 petabytes of additional data


Read full report at:
http://www.businessintelligencelowdown.com/2007/02/top_10_largest_.html