The Google Caffeine update has changed the entire window as far as the previous indexing infrastructure was concerned; it created a more continuous and relevant stream of search results. Before Caffeine, Google would update the index at intervals, which means that newer content had to wait for some period before it could be indexed and, thus, show up in the search result. Caffeine, however, introduced continuous crawling and indexing, thus enabling Google to enrich its index with new and amended web pages rapidly. As a result, people saw fresher content as current news articles, blog posts, and social media updates topped their search results. Google now had added tools to deal with ever-expanding web content and ensure that search results were rich and up to date.