Google recently announced its new search feature called “Instant”. From early reports about the new service, there was a lot of back-end work that needed to take place. In fact, it sounded like deficiencies in the speed at which Google was able to update its index was a motivating factor. The Register is points to Google’s “caffene” release earlier this year as departure from its reliance on MapReduce in favor of improvements to BigTable. The real story here is the much needed reimplementation of the Google File System.