Author: markt
Date: Tue Mar 3 20:48:02 2015
New Revision: 1663787
URL: http://svn.apache.org/r1663787
Log:
Add a deployment section to the Tomcat 8 migration guide
Modified:
tomcat/site/trunk/docs/migration-8.html
tomcat/site/trunk/xdocs/migration-8.xml
Modified: tomcat/site/trunk/docs/migration-8.html
URL:
http://svn.apache.org/viewvc/tomcat/site/trunk/docs/migration-8.html?rev=1663787&r1=1663786&r2=1663787&view=diff
==============================================================================
--- tomcat/site/trunk/docs/migration-8.html (original)
+++ tomcat/site/trunk/docs/migration-8.html Tue Mar 3 20:48:02 2015
@@ -232,6 +232,9 @@
<li>
<a href="#Internal_APIs">Internal APIs</a>
</li>
+<li>
+<a href="#Deployment">Deployment</a>
+</li>
</ol>
</li>
<li>
@@ -536,6 +539,51 @@ of Apache Tomcat.</p>
</ul>
+
+</div>
+</div>
+
+
+<div class="subsection">
+<h4 id="Deployment">Deployment</h4>
+<div class="text">
+
+
+<p>Deployment of a web application as a WAR file and with Tomcat configured
+ not to unpack WARs will result in significantly slower startup times and
+ slower runtime performance. Start-up times have been measured between three
+ and ten times slower. Runtime impact will depend significantly on the
+ application structure.</p>
+
+
+<p>It is strongly recommended not to set <code>unpackWARs="false"</code> on
+ a Host or <code>unpackWAR="false"</code> on a Context. Below is a list of
+ common reasons for disabling unpacking and the recommended alternative for
+ Tomcat 8:</p>
+
+
+<ul>
+
+<li>
+<i>Security (appBase is readOnly to Tomcat user)</i> - Deploy (as a
+ different user) an unpacked directory to the appBase rather than a WAR
+ file.</li>
+
+<li>
+<i>Sharing an appBase between multiple hosts</i> - Deploy WAR files
+ to a common location and then use context.xml files to add the web
+ applications to the hosts as required. Note sharing an appBase between
+ multiple hosts is strongly discouraged in all circumstances.</li>
+
+<li>
+<i>Off-line deployment</i> - As of Tomcat 8.0.21, Tomcat will detect
+ when a WAR has been updated while it is not running and, when next
+ started, remove the out of date expanded directory and deploy the updated
+ WAR file so simply use <code>unpackWAR="true"</code> and continue to
+ deploy WARs when Tomcat is not running.</li>
+
+</ul>
+
</div>
</div>
Modified: tomcat/site/trunk/xdocs/migration-8.xml
URL:
http://svn.apache.org/viewvc/tomcat/site/trunk/xdocs/migration-8.xml?rev=1663787&r1=1663786&r2=1663787&view=diff
==============================================================================
--- tomcat/site/trunk/xdocs/migration-8.xml (original)
+++ tomcat/site/trunk/xdocs/migration-8.xml Tue Mar 3 20:48:02 2015
@@ -204,6 +204,36 @@ of Apache Tomcat.</p>
</subsection>
+ <subsection name="Deployment">
+
+ <p>Deployment of a web application as a WAR file and with Tomcat configured
+ not to unpack WARs will result in significantly slower startup times and
+ slower runtime performance. Start-up times have been measured between three
+ and ten times slower. Runtime impact will depend significantly on the
+ application structure.</p>
+
+ <p>It is strongly recommended not to set <code>unpackWARs="false"</code> on
+ a Host or <code>unpackWAR="false"</code> on a Context. Below is a list of
+ common reasons for disabling unpacking and the recommended alternative for
+ Tomcat 8:</p>
+
+ <ul>
+ <li><i>Security (appBase is readOnly to Tomcat user)</i> - Deploy (as a
+ different user) an unpacked directory to the appBase rather than a WAR
+ file.</li>
+ <li><i>Sharing an appBase between multiple hosts</i> - Deploy WAR files
+ to a common location and then use context.xml files to add the web
+ applications to the hosts as required. Note sharing an appBase between
+ multiple hosts is strongly discouraged in all circumstances.</li>
+ <li><i>Off-line deployment</i> - As of Tomcat 8.0.21, Tomcat will detect
+ when a WAR has been updated while it is not running and, when next
+ started, remove the out of date expanded directory and deploy the updated
+ WAR file so simply use <code>unpackWAR="true"</code> and continue to
+ deploy WARs when Tomcat is not running.</li>
+ </ul>
+
+ </subsection>
+
</section>
<section name="Upgrading 8.0.x">
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