There has been quite a bit of Buzz about Elastic Search and when WebCenter Content will use it. Rest easy... that day has arrived! What's "Elastic Search?" Glad you asked! In a nutshell, Elastic Search uses a file system based index, and is an alternative to managing your search index in a Database. It lends itself well to large repositories (+1M content items).
Elasticsearch is a distributed, open source search and analytics engine for all types of data, including textual, numerical, geospatial, structured, and unstructured. Elasticsearch is built on Apache Lucene and was first released in 2010 by Elasticsearch N.V. (now known as Elastic).
For more details regarding Elastic Search, go to the ES site.
For more details on the integration of Elastic Search with WebCenter Content, please see this article:
To install and configure Elastic Search on a WebCenter Content Server: