In
general web crawlers do a good job of indexing most of what's available on the web, but depending on how often a search engine crawls a particular site there can be some lag between when a page is published (or updated) and when that page is indexed.
Not exact matches
In
general, the search engine program («spider» or «robot «-RRB-
crawls the
web for
web pages, jumping from page to page by way of links on each page.
The result is «this ontology of terms that has been developed over the years» and continues to be refined every night, when the system
crawls the
Web to collect the latest data, says Owen Byrd, Lex Machina's chief evangelist and
general counsel.