Google Caffeine Boosts Content Refresh Rate 50%

Google's new indexing engine, Caffeine, is said to provide 50 percent fresher results for web searches than Google's last index.

Google's older index had several layers, some of which were refreshed at a faster rate than others. The main layer would update every couple of weeks, for example. To refresh a layer of the old index, Google would analyze the entire web.

With Caffeine, Google analyzes the web in small portions and updates its search index on a continuous basis, globally. That means fresher information.

Official Google Blog: Our new search index: Caffeine