The Apache Tomcat team announces the immediate availability of Apache
Tomcat 8.0.20.

Apache Tomcat 8 is an open source software implementation of the Java
Servlet, JavaServer Pages, Java Unified Expression Language and Java
WebSocket technologies.

Apache Tomcat 8.0.20 includes numerous fixes for issues identified
in 8.0.18 as well as a number of other enhancements and changes. The
notable changes since 8.0.18 include:

- Fix a performance regression in the new resources implementation
  when signed JARs are used in a web application.

- Fix several bugs that could cause multiple registrations for write
  events for a single socket when using Servlet 3.0 async. Typically,
  the side effects of these multiple registrations would be
  exceptions appearing in the logs.

- Enhance the bean factory used for JNDI resources. The new
  attribute forceString allows to support non-standard string
  argument property setters.

Please refer to the change log for the complete list of changes:


Migration guides from Apache Tomcat 5.5.x, 6.0.x and 7.0.x:


- The Apache Tomcat team

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