Tomcat 服务器的内存和连接数调优设置

<Server port="8005" shutdown="SHUTDOWN">
  <Listener className="org.apache.catalina.startup.VersionLoggerListener" />
  <Listener className="org.apache.catalina.core.AprLifecycleListener" SSLEngine="on" />
  <Listener className="org.apache.catalina.core.JasperListener" />
  <Listener className="org.apache.catalina.core.JreMemoryLeakPreventionListener" />
  <Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener" />
  <Listener className="org.apache.catalina.core.ThreadLocalLeakPreventionListener" />
 
  <GlobalNamingResources>
    <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>
 
  <Service name="Catalina">
 
    <Connector port="8080" protocol="HTTP/1.1"
               connectionTimeout="20000"
               redirectPort="8443"
               maxThreads="500"
               minSpareThreads="20"
               acceptCount="100"
               enableLookups="false"
               compression="on"
               compressionMinSize="2048"
               compressableMimeType="text/html,text/xml,text/plain,text/css,text/javascript,application/json" />
 
    <Connector port="8009" protocol="AJP/1.3" redirectPort="8443" />
 
    <Engine name="Catalina" defaultHost="localhost">
 
      <Realm className="org.apache.catalina.realm.LockOutRealm">
        <Realm className="org.apache.catalina.realm.UserDatabaseRealm"
               resourceName="UserDatabase"/>
      </Realm>
 
      <Host name="localhost"  appBase="webapps"
            unpackWARs="true" autoDeploy="true">
 
        <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" />
 
      </Host>
    </Engine>
  </Service>
</Server>

在这个示例中，我们调整了<Connector>元素的参数，包括maxThreads（Tomcat可以处理的最大并发连接数）、minSpareThreads（Tomcat初始化的时候创建的线程数）和acceptCount（当所有可以使用的处理请求的线程都被使用时，可以放到连接队列中的请求数）。这些调整旨在根据应用需求优化内存和连接处理能力。