ReadWriteWeb

Of all the technologies powering the social Web, few are as under-appreciated as the espresso machine.

We go gaga over great mashups, we drool over high-powered hardware, and we lust for private beta invitations to Google's latest whatever-the-hell-it-is. But none of these would be possible without machines to blast steam through finely ground coffee beans, and baristas with the skill to pull a perfect espresso shot.

A few weeks ago, Google announced the beta launch of Caffeine, the company's next-generation search infrastructure. At that time, Google said that most of the changes in this update were under the hood and that users wouldn't notice a difference in search results. At its core, Caffeine is basically a major overhaul of the Google File System. There have been some discussions about whether this update will bring any other major changes to page rankings or the importance of certain categories in the search results. Summit Media, a UK-based digital marketing agency, compared search results for 9,000 keywords (PDF) in Caffeine and Google's default ('vanilla') search and, interestingly, didn't find any major differences between the two.

Just as Facebook announces internal search for public notes, Google counters with an effort to improve on its existing services. In today's blog post, the company unveiled its new Caffeine search infrastructure to web developers. The question is, will Caffeine enhance performance or lead to user anxiety?