Google’s new search index – Caffine

by on 15/06/2010

Google are announcing the completion of a new web indexing system called Caffeine. Caffeine provides 50 percent fresher results for web searches than its previous last index, and it’s the largest collection of web content they have offered. Whether it’s a news story, a blog or a forum post, you can now find links to relevant content much sooner after it is published than was possible ever before.

Caffeine lets google index web pages on an enormous scale. In fact, every second Caffeine processes hundreds of thousands of pages in parallel. If this were a pile of paper it would grow three miles taller every second. Caffeine takes up nearly 100 million gigabytes of storage in one database and adds new information at a rate of hundreds of thousands of gigabytes per day. You would need 625,000 of the largest iPods to store that much information; if these were stacked end-to-end they would go for more than 40 miles.

Google claims to have built Caffeine with the future in mind. “Not only is it fresher, it’s a robust foundation that makes it possible for us to build an even faster and comprehensive search engine that scales with the growth of information online, and delivers even more relevant search results to you”.

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