DOJO Footprint and Ajax Performance

Ajaxian reports something that I have faced in the past:

Coach Wei of Nexaweb has been spending time on the Dojo Footprint and Ajax Performance Recommendations. He ran a Dojo Performance Overhead Challenge which involved creating a simple widget with Dojo, and one from scratch:

After building and packaging the my simple Dojo widget, the custom build produces a new dojo.js that has packed all necessary files, but only the necessary file, into one single download. The footprint of this custom dojo.js is 168KB.

In contrast, if I wrote this simple widget from scratch without using Dojo, its footprint would be under 10KB(with compression, it would be under 2KB).

Given the dramatic difference in footprint, my conclusion is that Dojo is not suitable for this use scenario.

Dylan Schiemann responded discussing how the Dojo team is pushing hard to solve some of these problems.

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