Scaling: Not Just About Architecture

published by Frank Sommers

        Summary

At SD Forum 2006, two eBay architects presented an overview how eBay’s
architecture handles a billion page requests a day, and how that
architecture evolved from a few Perl scripts to 15,000 application
instances running in eight data centers. One conclusion from the
presentation is that scaling is only in part a question of architecture.Predictably, the presentation contained a few awe-inspiring statistics, such as:

• 212,000,000 registered users
• 1 billion page views per day
• 26 billion SQL queries and updates per day
• Over 2 petabytes of data
• $1,590 worth of goods traded per second
• Over 1 billion photos
• 7 languages
• 99.94% uptime

Scaling: Not Just About Architecture

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