Upgrade Notice: Versions 1.6.1, 1.6.2, 1.7, 1.8, 2.1, 2.1.2, 2.2 require re-syncing. ElasticPress, a fast and flexible search and query engine for WordPress, enables WordPress to find or “query” relevant content extremely fast through a variety of highly customizable features.
pocket source: https://github.com/10up/ElasticPress