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 Resin Server | Application Server (Java EE Certified) and Web Server

resin 4.0.20 release notes


4.0.20 continues focus on bug fixes and stability. 4.0.20 includes significant reworking of the networking state machine for comet/async timing issues.

Thanks to everyone who reported bugs in 4.0.19. We encourage people to report 4.0.20 bugs at

Health PDF Reports

PDF reports are now available from the /resin-admin summary page and the postmortem. The PDF gathers the summary graphs into a single document.

Weekly PDF Reports

PDF reports can now be generated on a timed basic (daily or weekly). The new PdfReport health action creates a summary pdf in the resin/log directory for an overview of the server operation.

Example: resin.xml configuration for PdfReport
<resin xmlns=""

  <resin:import path="${__DIR__}/health.xml" optional="true"/>

    <health:IfCron value="0 0 * * 0"/>

Custom Graph Pages

The graphs in the /resin-admin "meters" section can be configured by adding <health:MeterGraphPage> definitions to the health.xml or the resin.xml. The graph values are defined by <health:JmxMeter> and <health:JmxMeter> and allow any JMX value to be metered and displayed.

The custom graph pages can also be used for the PDF reports.

Example: Thread Graphs in resin.xml
<resin ...>

    <graph name="Threads">
      <meter>JVM|Thread|JVM Thread Count</meter>
      <meter>Resin|Thread|Thread Count</meter>
      <meter>Resin|Thread|Thread Idle Count</meter>
      <meter>JVM|Thread|JVM Runnable Count</meter>
      <meter>JVM|Thread|JVM Blocked Count</meter>
      <meter>JVM|Thread|JVM Native Count</meter>
      <meter>JVM|Thread|JVM Waiting Count</meter>


Copyright © 1998-2015 Caucho Technology, Inc. All rights reserved. Resin ® is a registered trademark. Quercustm, and Hessiantm are trademarks of Caucho Technology.

Cloud-optimized Resin Server is a Java EE certified Java Application Server, and Web Server, and Distributed Cache Server (Memcached).
Leading companies worldwide with demand for reliability and high performance web applications including, CNET, DZone and many more are powered by Resin.

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