Google has previously reviewed each night a "piece" web, index it, and then collected the information published in the results. The old index is improved with caffeine had a few layers, some of which are updated more quickly than others, and the main layer is refreshed every few weeks. Thanks to Caffeine is now new information is immediately indexed and served for a few seconds later.
In the beginning, Google updated its index once every four months, and about 2000. started to update it every month. At that time there was not enough capacity to all its data centers are updated at once, so that they get different results if the same term to hit the different centers.
Caffeine is revived in the last few days and now it is used by all centers. In addition to serving customers fresher data, this technology enables greatly increase the scale of Google's bids. The company will be able to index much more documents - the order of 100 petabytes.
Moving to a new way of indexing a more clearly expressed the growing need for people to find the fresh information. Caffeine adds new information-based store located in a hundred million gigabytes of capacity at a rate of several hundred thousand gigabytes per day, because every second parallel processing of hundreds of thousands of pages, according to Google's statement.
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