This question already has an answer here:

Just a random question, all the questions I have created in Stack Overflow instantly searchable the moment I publish it.

How is it possible? I thought you will need to wait for google to crawl the site first which usually takes around 2 weeks ?

marked as duplicate by Shadow The Princess Wizard, hammar, Bo Persson, hims056, Lucifer Apr 18 '13 at 6:59

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

migrated from stackoverflow.com Apr 18 '13 at 6:25

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  • Should this question be migrated to Webmasters instead? – Alvin Wong Apr 18 '13 at 6:37
  • @Alvin no, it's asking about Stack Overflow not about websites in general and Meta is the place to discuss anything related to Stack Overflow. – Shadow The Princess Wizard Apr 18 '13 at 6:39
  • @ShaWizDowArd But the answer, as you can see, is not only related to StackOverflow site(s). – Alvin Wong Apr 18 '13 at 6:40

Google groups pages by how often they update, and crawls the frequently changing ones more often. That's why the indexes to news sites are always fresh too.