Editing Apache Tomcat (section)

===High availability===
A high-availability feature has been added to facilitate the scheduling of system upgrades (e.g. new releases, change requests) without affecting the live environment. This is done by dispatching live traffic requests to a temporary server on a different port while the main server is upgraded on the main port. It is very useful in handling user requests on high-traffic web applications.<ref>{{cite web |last1=King |first1=Graham |date=2004-12-20 |df=mdy |url=https://www.infoworld.com/article/2073121/high-availability-tomcat.html |title=High availability Tomcat |work=[[JavaWorld]] |access-date=2020-07-21}}</ref>