The Internet Archive discovers and captures web pages through many different web crawls.
At any given time several distinct crawls are running, some for months, and some every day or longer.
View the web archive through the Wayback Machine.
Web wide crawl with initial seedlist and crawler configuration from October 2010
TIMESTAMPS
The Wayback Machine - https://web.archive.org/web/20110106222038/http://www.searchengineoptimising.com/glossary/glossary-of-computer-and-internet-terms/olap
OLAP (Online Analytical Processing) is a way of analysing database information from several databases at once. This is multidimentional so can carry out the same task in several different databases at the same time.