What is Google Caffeine?
Google Caffeine (Caffeine) is the name of the improved web indexing system that Google announced for its search engine in 2009. It was officially completed in 2010.
What are benefits of Caffeine?
The Google Caffeine indexing system indexes new pages faster than the previous system. This translates into better indexing of more relevant search results. The search engine is able to search for interesting information much faster than before, and content published on the Internet appears in the index earlier.
Google Caffeine had no direct impact on the ranking of pages in the index.