Google gets caffeine injection for search engine

London: Google has unveiled a new version of its search engine which it says will be faster and more accurate than ever before.

The upgrade, which insiders have dubbed "caffeine", was announced on Monday after the company opened up access to web developers. It is intended to replace the technology giant's main search engine after tests have been completed.

Although little about the surface appearance of the new version has changed, engineers promised that radical changes behind the scenes would bring vast improvements for ordinary users.

"For the past several months a large team of Googlers has been working on a secret project: a next-generation architecture for Google's web search," said the company in a statement on one of its blogs.

"It's the first step in a process that will let us push the envelope on size, indexing speed, accuracy, comprehensiveness and other dimensions."

The company claims that significant changes to the way the system works will improve the experience for users although it will also send shockwaves through the community of marketers who try and optimise their results to appear higher up in Google's index.

The move comes despite Google's extensive lead in the search engine market a domination which has provided it with billions in profits.

Despite that lead, a series of threats have emerged recently that have seen the company redouble its efforts. Chief among them is Microsoft's continuing effort to break into the top tier of the search business, which has so far included rebranding its search engine as Bing.com and scoring a deal to take control of Yahoo's search business.

Other possible contenders for the future of the business have emerged, too, including a "knowledge engine" called Wolfram Alpha, designed by British-born physicist Stephen Wolfram; and the emergence of so-called "real-time search" through websites like Facebook and Twitter.

Caffeine allows Google to index the web at a higher pace - gathering more information and doing it faster - but the company's search quality specialist, Matt Cutts, rejected claims that it was developed in response to the actions of rivals.

Whether the upgrade will have a significant impact on Google's business has yet to emerge, but Martin McNulty, director of search marketing specialist Trafficbroker, said that it could give it a significant boost.