can any one tell about indexing in solr?

I am just a learner in Drupal, Solr so can any one guide me how to implement indexing and how it is being updat开发者_JAVA百科ed in solr indexing whenever any updates being happened in Database so that in searching to get the recently posted also.

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Start here: http://drupal.org/project/apachesolr

Also see http://19thstreetdesign.com/blog/2009.02.04/installing-apache-solr-drupal-6

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Search Indexing in either standard Drupal search or apachesolr search works about the same way - every time that cron is run (http://www.example.com/cron.php), The search module looks for the next N items which are either new or updated and need to be re-indexed. (This N is set in the search settings at admin/settings/search for standard search or at admin/settings/apachesolr for the apache solr search.)

It's a good idea to take a few moments to look over both of those pages and see how the options are laid out - they're pretty well documented in the forms.

As for implementing indexing, you don't really have to - the modules take care of it for you. you just need to turn on search, and optionally install and turn on apachesolr, and it takes care of it for you.