Instead of within an Application Server such as Jetty, Tomcat or Wildly ... Solr can also now be run standalone on Undertow without the overhead or complexity of a full application server. Open-sourced on https://github.com/bremeld/solr-undertow
solr-undertow Solr running in standalone server - High Performance, tiny, fast, easy, standalone deployment. Requires JDK 1.7 or newer. Less than 4MB download, faster than Jetty, Tomcat and all the others. Written in the Kotlin language <http://kotlinlang.org/> for the JVM. Releases are available here <https://github.com/bremeld/solr-undertow/releases> on GitHub. This application launches a Solr WAR file as a standalone server running a high performance HTTP front-end based on undertow.io (the engine behind WildFly, the new JBoss). It has no features of an application server, does nothing more than load Solr servlets and also service the Admin UI. It is production-quality for a stand-alone Solr server.
