Today Adrian Trenaman posted a presentation about the example of using Solr in the sale site.
“This talk provides a tour of how Apache Solr is used to power search for America’s largest flash sale site, http://www.gilt.com. We show how to address the challenges of providing listings for fast moving inventory in a search space personalized for each of our members. The solution, built on Play Framework comprises less than 4,000 lines of code, and provides response times of 40ms on average.”
Sergey Tihon's Blog 