September 25, 2014 — We know intuitively that searching in WP kinda sucks; the flaws in a traditional datastore (a.k.a. MySQL) make fixing these problems extremely hard. Elasticsearch complements WP and allows us to solve these issues to transparently provide a better user experience. Take a look at how and why Automattic is using Elasticsearch and how to leverage it for your own site too.
August 21, 2014 — In this presentation, a number of excellent best practices for developing WordPress sites are discussed involving custom post types, custom fields, database migration and more.
November 14, 2009 — Library catalogs are big, database-driven websites with lots of metadata but little social interaction. WordPress is an outstanding platform for database-driven websites full of social interaction. Extending WordPress to replace library catalogs is easier than fixing library catalogs to support modern interactions. Scriblio adds faceted searching and browsing as well as structured metadata to make WordPress the most flexible and social platform for presenting any catalog data.
Video courtesy ISOC-NY.