The Apache Tomcat team announces the immediate availability of Apache
Tomcat 9.0.0.M22.

Apache Tomcat 9 is an open source software implementation of the Java
Servlet, JavaServer Pages, Java Unified Expression Language, Java
WebSocket and JASPIC technologies.

Apache Tomcat 9.0.0.M22 is a milestone release of the 9.0.x branch and
has been made to provide users with early access to the new features in
Apache Tomcat 9.0.x so that they may provide feedback. The notable
changes compared to 9.0.0.M21 include:

- Add a new JULI FileHandler configuration for specifying the maximum
  number of days to keep the log files. By default the log files will be
  kept 90 days.

- Update the Servlet 4.0 implementation to add support for setting
  trailer fields for HTTP responses.

- When pre-compiling with JspC, report all compilation errors rather
  than stopping after the first error.

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


Migration guides from Apache Tomcat 6.x, 7.x and 8.x:


- The Apache Tomcat team

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