1. eBay maintains four copies of most of its databases.
2. It takes 30 minutes to build the ebay.com site - in the last 2.5 years, there have been 2 million builds.
3. On an average, eBay.com runs into issues for about 50 seconds per day.
4. The site averages more than 1 billion page views per day.
5. Users trade about $1,700 worth of goods on the site every second.
6. The site currently has about 600 million listings and about 204 million registered users.
7. The world's time zones provide a kind of natural load-balancer. When there's surge in traffic from US, that's generally when Europe [the second-largest region using eBay] is asleep - and vice versa.
8. eBay engineers have to add about 10 terabytes of new storage every week to cover new transactions.
Source: eweek.com
Thanks: Digital Inspirations
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