Big search system by torrents.
Role: Full-cycle development.
Used full-text search engine Sphinx.
The base for search included approximate 20 millions records, at start moment.
Next would need to prepare to possible highloads. For this always did load testing (JMeter), with disabled cache by all site pages. For a start, the task would be held 3000 request per second. After data base optimization with this task handled one dedicated server. Any opportunity of clustering would not needed, at that moment.
Main technologies: Zend Framework 1, Sphinx, PHP, MySQL, Nginx, JavaScript, jQuery, CentOS