Editing Google Search (section)

=== "Caffeine" search architecture upgrade ===
In August 2009, Google invited web developers to test a new search architecture, codenamed "Caffeine", and give their feedback. The new architecture provided no visual differences in the user interface, but added significant speed improvements and a new "under-the-hood" indexing infrastructure. The move was interpreted in some quarters as a response to [[Microsoft]]'s recent release of an upgraded version of its own search service, renamed [[Bing (search engine)|Bing]], as well as the launch of [[Wolfram Alpha]], a new search engine based on "computational knowledge".<ref>{{Cite news |last=Barnett |first=Emma |date=August 11, 2009 |title=Google reveals caffeine: a new faster search engine |work=[[The Daily Telegraph]] |url=https://www.telegraph.co.uk/technology/google/6009176/Google-reveals-caffeine-a-new-faster-search-engine.html |url-status=live |url-access=subscription |access-date=December 9, 2017 |archive-url=https://ghostarchive.org/archive/20220110/https://www.telegraph.co.uk/technology/google/6009176/Google-reveals-caffeine-a-new-faster-search-engine.html |archive-date=January 10, 2022}}{{cbignore}}</ref><ref>{{Cite web |last=Fox |first=Vanessa |date=August 10, 2009 |title=Google Caffeine: Google's New Search Engine Index |url=https://searchengineland.com/caffeine-googles-new-search-index-23823 |access-date=December 9, 2017 |website=[[Search Engine Land]] |archive-date=December 10, 2017 |archive-url=https://web.archive.org/web/20171210071617/https://searchengineland.com/caffeine-googles-new-search-index-23823 |url-status=live }}</ref> Google announced completion of "Caffeine" on June 8, 2010, claiming 50% fresher results due to continuous updating of its index.<ref>{{Cite web |last=Fox |first=Vanessa |date=June 8, 2010 |title=Google's New Indexing Infrastructure "Caffeine" Now Live |url=https://searchengineland.com/googles-new-indexing-infrastructure-caffeine-now-live-43891 |access-date=December 9, 2017 |website=[[Search Engine Land]] |archive-date=December 10, 2017 |archive-url=https://web.archive.org/web/20171210071639/https://searchengineland.com/googles-new-indexing-infrastructure-caffeine-now-live-43891 |url-status=live }}</ref>

With "Caffeine", Google moved its back-end indexing system away from [[MapReduce]] and onto [[Bigtable]], the company's distributed database platform.<ref>{{Cite web |last=Metz |first=Cade |date=September 9, 2010 |title=Google search index splits with MapReduce |url=https://www.theregister.co.uk/2010/09/09/google_caffeine_explained |access-date=December 9, 2017 |website=[[The Register]] |publisher=Situation Publishing |archive-date=December 10, 2017 |archive-url=https://web.archive.org/web/20171210020001/https://www.theregister.co.uk/2010/09/09/google_caffeine_explained |url-status=live }}</ref><ref>{{Cite web |last=Metz |first=Cade |date=August 14, 2009 |title=Google Caffeine: What it really is |url=https://www.theregister.co.uk/2009/08/14/google_caffeine_truth/ |access-date=December 9, 2017 |website=[[The Register]] |publisher=Situation Publishing |archive-date=December 23, 2017 |archive-url=https://web.archive.org/web/20171223224328/http://www.theregister.co.uk/2009/08/14/google_caffeine_truth |url-status=live }}</ref>