Showing posts with label Google Caffeine. Show all posts
Showing posts with label Google Caffeine. Show all posts

Google Caffeine: Google’s New Search Engine Index - An Overview

  • The old index had several layers
  • some of which layers refreshed at a faster rate than others
  • The main layer would update every couple of weeks
  • To refresh a layer of the old index, the entire web has to be analyzed
  • So there was a significant delay between when a page found and made it available to users. 
  • Caffeine provides 50 percent fresher results for web searches than old index
  • In Caffeine, the web is analyzed in small portions and update the search index on a continuous basis, globally.
  • When ever a new page is find, or new information on existing pages, It can be added straight to the index
  • It means users can find fresher information than ever before.
  • Caffeine takes up nearly 100 million gigabytes of storage in one database
  • It adds new information at a rate of hundreds of thousands of gigabytes per day
  • It would need 625,000 of the largest i-pods to store that much information
  • If these were stacked end-to-end they would go for more than 40 miles in old index