Solr uses Lucene's real-time indexing capabilities to ensure that a constant stream of live updates are sent, keeping the user informed of modifications.
Solr is highly scalable and enables changes. It is resilient to failure and bakes in replication, distribution and rebalancing out of the box.
Your Solr instances can be controlled using built-in and responsive UI which is easy to monitor as it provides more insight into metric data via JMX.
Solr publishes many specific extension points that make plugging in query time easy.
High volume traffic is optimized. Publishes metric data that allows for monitoring.
Solr is flexible and designed to adapt to your needs ensuring a simplified configuration.