Tomcat Multi-Instance Server.xml Based on Springsource

server.xml

<?xml version='1.0' encoding='utf-8'?>
<!--
  Licensed to the Apache Software Foundation (ASF) under one or more
  contributor license agreements.  See the NOTICE file distributed with
  this work for additional information regarding copyright ownership.
  The ASF licenses this file to You under the Apache License, Version 2.0
  (the "License"); you may not use this file except in compliance with
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      http://www.apache.org/licenses/LICENSE-2.0

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  distributed under the License is distributed on an "AS IS" BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  See the License for the specific language governing permissions and
  limitations under the License.
-->
<!-- Note:  A "Server" is not itself a "Container", so you may not
     define subcomponents such as "Valves" at this level.
     Documentation at /docs/config/server.html
 -->
<Server port="${shutdown.port}" shutdown="SHUTDOWN">
  <!-- Security listener. Documentation at /docs/config/listeners.html
  <Listener className="org.apache.catalina.security.SecurityListener" />
  -->
  <!--APR library loader. Documentation at /docs/apr.html -->
  <Listener className="org.apache.catalina.core.AprLifecycleListener" SSLEngine="on" />
  <!--Initialize Jasper prior to webapps are loaded. Documentation at /docs/jasper-howto.html -->
  <Listener className="org.apache.catalina.core.JasperListener" />
  <!-- Prevent memory leaks due to use of particular java/javax APIs-->
  <Listener className="org.apache.catalina.core.JreMemoryLeakPreventionListener" />
  <Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener" />
  <Listener className="org.apache.catalina.core.ThreadLocalLeakPreventionListener" />

  <!-- Global JNDI resources
       Documentation at /docs/jndi-resources-howto.html
  -->
  <GlobalNamingResources>
    <!-- Editable user database that can also be used by
         UserDatabaseRealm to authenticate users
    -->
    <Resource name="UserDatabase" auth="Container"
              type="org.apache.catalina.UserDatabase"
              description="User database that can be updated and saved"
              factory="org.apache.catalina.users.MemoryUserDatabaseFactory"
              pathname="conf/tomcat-users.xml" />
  </GlobalNamingResources>

  <!-- A "Service" is a collection of one or more "Connectors" that share
       a single "Container" Note:  A "Service" is not itself a "Container", 
       so you may not define subcomponents such as "Valves" at this level.
       Documentation at /docs/config/service.html
   -->
  <Service name="Catalina">
  
    <!--The connectors can use a shared executor, you can define one or more named thread pools-->
    <!--
    <Executor name="tomcatThreadPool" namePrefix="catalina-exec-" 
        maxThreads="150" minSpareThreads="4"/>
    -->
    
    
    <!-- A "Connector" represents an endpoint by which requests are received
         and responses are returned. Documentation at :
         Java HTTP Connector: /docs/config/http.html (blocking & non-blocking)
         Java AJP  Connector: /docs/config/ajp.html
         APR (HTTP/AJP) Connector: /docs/apr.html
         Define a non-SSL HTTP/1.1 Connector on port 8080
         
         Common parameters are listed here for convience, if modifying
         the defaults please add the parameter to this list and mark
         the parameter as having been modified.
         
         acceptCount: 
         The maximum queue length for incoming connection requests 
         when all possible request processing threads are in use. 
         Any requests received when the queue is full will be refused. 
         The default value is 100.
         
         acceptorThreadCount:
         The number of threads to be used to accept connections. 
         Increase this value on a multi CPU machine, although you 
         would never really need more than 2. Also, with a lot of 
         non keep alive connections, you might want to increase this 
         value as well. Default value is 1.
         
         connectionTimeout: (MODIFIED FOR THIS INSTALL)
         The number of milliseconds this Connector will wait, after 
         accepting a connection, for the request URI line to 
         be presented. The default value is 60000 (i.e. 60 seconds).
         
         maxKeepAliveRequests:
         The maximum number of HTTP requests which can be pipelined 
         until the connection is closed by the server. 
         Setting this attribute to 1 will disable HTTP/1.0 keep-alive, 
         as well as HTTP/1.1 keep-alive and pipelining. Setting this 
         to -1 will allow an unlimited amount of pipelined or 
         keep-alive HTTP requests. If not specified, 
         this attribute is set to 100.
         
         maxThreads: (MODIFIED FOR THIS INSTALL)
         The maximum number of request processing threads to be 
         created by this Connector, which therefore determines 
         the maximum number of simultaneous requests that can be 
         handled. If not specified, this attribute is set to 200. 
         If an executor is associated with this connector, this 
         attribute is ignored as the connector will execute tasks 
         using the executor rather than an internal thread pool.
         
         maxConnections:
         he maximum number of connections that the server will accept 
         and process at any given time. When this number has been 
         reached, the server will not accept any more connections until 
         the number of connections reach below this value. The operating 
         system may still accept connections based on the acceptCount 
         setting. This setting is currently only applicable to the 
         blocking Java connectors (AJP/HTTP). Default value is 10000.
         
         processorCache: (MODIFIED FOR THIS INSTALL)
         The protocol handler caches Processor objects to speed up performance. 
         This setting dictates how many of these objects get cached. 
         -1 means unlimited, default is 200. 
         Set this value somewhere close to your maxThreads value.
         
         URIEncoding: (MODIFIED FOR THIS INSTALL)
         This specifies the character encoding used to 
         decode the URI bytes, after %xx decoding the URL. If 
         not specified, ISO-8859-1 will be used.
    -->
    <Connector port="${http.port}" 
               protocol="HTTP/1.1" 
               maxThreads="200"
               maxKeepAliveRequests="1"
               processorCache="200"
               URIEncoding="UTF-8"
               connectionTimeout="2000" 
               redirectPort="8443" />

    <!-- An Engine represents the entry point (within Catalina) that processes
         every request.  The Engine implementation for Tomcat stand alone
         analyzes the HTTP headers included with the request, and passes them
         on to the appropriate Host (virtual host).
         Documentation at /docs/config/engine.html -->

    <Engine name="Catalina" defaultHost="localhost">

      <!--For clustering, please take a look at documentation at:
          /docs/cluster-howto.html  (simple how to)
          /docs/config/cluster.html (reference documentation) -->
      <!--
      <Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster"/>
      -->        

      <!-- Use the LockOutRealm to prevent attempts to guess user passwords
           via a brute-force attack -->
      <Realm className="org.apache.catalina.realm.LockOutRealm">
        <!-- This Realm uses the UserDatabase configured in the global JNDI
             resources under the key "UserDatabase".  Any edits
             that are performed against this UserDatabase are immediately
             available for use by the Realm.  -->
        <Realm className="org.apache.catalina.realm.UserDatabaseRealm"
               resourceName="UserDatabase"/>
      </Realm>

      <Host name="localhost"  appBase="webapps"
            unpackWARs="true" autoDeploy="true">

        <!-- SingleSignOn valve, share authentication between web applications
             Documentation at: /docs/config/valve.html -->
        <!--
        <Valve className="org.apache.catalina.authenticator.SingleSignOn" />
        -->

        <!--
             Access log processes all example.
             Documentation at: /docs/config/valve.html
             Note: The pattern used is equivalent to using pattern="common" 
             !!!! REMOVED to prevent extra IO costs !!!! 
        <Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs"  
               prefix="localhost_access_log." suffix=".txt"
               pattern="%h %l %u %t &quot;%r&quot; %s %b" resolveHosts="false"/>
	       -->

      </Host>
    </Engine>
  </Service>
</Server>