In April 2009 I began working on a new eCommerce site for BTR Direct, working freelance for White Hat Media.
This site does a lot of very clever things behinds the scenes which required me to write some custom Drupal modules. Each night we transfer an XML archive containing all the new and updated content for the site. We import and update around 3,000 products in this XML feed.
Then we run the Apache Solr search indexer on all this new content.