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Posted to announce@tomcat.apache.org by Mark Thomas <ma...@apache.org> on 2025/07/04 20:02:48 UTC

[ANN] Apache Tomcat 11.0.9 Available

The Apache Tomcat team announces the immediate availability of Apache 
Tomcat 11.0.9.

Apache Tomcat 11 is an open source software implementation of the 
Jakarta Servlet, Jakarta Pages, Jakarta Expression Language, Jakarta 
WebSocket, Jakarta Authentication and Jakarta Annotations specifications.

The notable changes compared to 11.0.8 include:

- Increase the default for maxPartCount from 10 to 50. Update the
   documentation to provide more details on the memory requirements
   to support multi-part uploads while avoiding a denial of service
   risk.

- Various improvements to HTTP/2

- Fix JMX value for keepAliveCount on the endpoint. Also add the
   value of useVirtualThreads in JMX.


Please refer to the change log for the complete list of changes:
http://tomcat.apache.org/tomcat-11.0-doc/changelog.html

Downloads:
http://tomcat.apache.org/download-11.cgi

Migration guides from Apache Tomcat 9.0.x and 10.1.x:
http://tomcat.apache.org/migration.html

Enjoy!

- The Apache Tomcat team