tomcat的优化配置

<?xml version="1.0" encoding="UTF-8"?>
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<!-- 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="8005" shutdown="SHUTDOWN">
  <Listener className="org.apache.catalina.startup.VersionLoggerListener" />
  <!-- 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" />
  <!-- 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-->
    <!--线程池配置
        maxThreads：请求处理线程的最大数量
        minSpareThreads：最低数量的备用线程
        maxSpareThreads：最多数量的备用线程
        maxIdleTime：线程空闲时间，超过该时间后，空闲线程会被销毁
        maxQueueSize：最大线程排队数目，默认为Int的最大值，也就是广义的无限
        prestartminSpareThreads：启动线程池时是否启动 minSpareThreads部分线程
        threadPriority：线程池中线程优先级，值从1到10-->
    <Executor name="tomcatThreadPool" namePrefix="catalina-exec-"
        maxThreads="1000" minSpareThreads="25" maxSpareThreads="75"
        maxIdleTime="60000"  
        maxQueueSize="Integer.MAX_VALUE"  
        prestartminSpareThreads="false"  
        threadPriority="5"/>
    


    <!-- A "Connector" represents an endpoint by which requests are received
         and responses are returned. Documentation at :
         Java HTTP Connector: /docs/config/http.html
         Java AJP  Connector: /docs/config/ajp.html
         APR (HTTP/AJP) Connector: /docs/apr.html
         Define a non-SSL/TLS HTTP/1.1 Connector on port 8080
    -->
    <!--BIO改为NIO2，并开启线程池
        enableLookups：如果为true,则可以通过调用request.getRemoteHost()进行DNS查询来得到远程客户端的实际主机名；若为false则不进行DNS查询，而是返回其                   ip地址
        maxPostSize：设置由容器解析的URL参数的最大长度，默认为2097152(2M)
        URIEncoding：配置URI使用的字符编码，来解码?之前的字符串
        useBodyEncodingForURI：当设置为true时 根据http body设置的字符集来解码 url里? 之后的参数
        acceptCount：当所有可以使用的处理请求的线程都被用光时，可以放到处理队列中的请求数，超过这个数的请求将不予处理，而返回Connection refused错误acceptorThreadCount：用于接收连接的线程的数量，默认值是1。一般这个需要改动的时候是因为该服务器是一个多核CPU，如果是多核 CPU 一般配置为 2
        disableUploadTimeout：禁用上传超时，主要用于大数据上传时
        maxConnections：与tomcat建立的最大socket连接数
        compression：启用tomcat压缩 
        compressionMinSize：当超过多少大小之后进行压缩
        compressableMimeType：定义压缩的类型-->
    <!--<Connector port="8080" protocol="HTTP/1.1"
               connectionTimeout="20000"
               redirectPort="8443" />-->
    <Connector connectionTimeout="20000" port="8087" protocol="org.apache.coyote.http11.Http11Nio2Protocol" 
                executor="tomcatThreadPool" redirectPort="8443"
            enableLookups="false"
            maxPostSize="10485760"
            URIEncoding="UTF-8" 
            useBodyEncodingForURI="true"
            acceptCount="300"
            acceptorThreadCount="2"
            disableUploadTimeout="true" 
            maxConnections="10000"
            compression="on"
            compressionMinSize="2048"
            compressableMimeType="text/html,text/xml,text/javascript,text/css,text/plain"/>
    <!-- A "Connector" using the shared thread pool-->
    <!--
    <Connector executor="tomcatThreadPool"
               port="8080" protocol="HTTP/1.1"
               connectionTimeout="20000"
               redirectPort="8443" />
    -->
    <!-- Define a SSL/TLS HTTP/1.1 Connector on port 8443
         This connector uses the NIO implementation. The default
         SSLImplementation will depend on the presence of the APR/native
         library and the useOpenSSL attribute of the
         AprLifecycleListener.
         Either JSSE or OpenSSL style configuration may be used regardless of
         the SSLImplementation selected. JSSE style configuration is used below.
    -->
    <!--
    <Connector port="8443" protocol="org.apache.coyote.http11.Http11NioProtocol"
               maxThreads="150" SSLEnabled="true">
        <SSLHostConfig>
            <Certificate certificateKeystoreFile="conf/localhost-rsa.jks"
                         type="RSA" />
        </SSLHostConfig>
    </Connector>
    -->
    <!-- Define a SSL/TLS HTTP/1.1 Connector on port 8443 with HTTP/2
         This connector uses the APR/native implementation which always uses
         OpenSSL for TLS.
         Either JSSE or OpenSSL style configuration may be used. OpenSSL style
         configuration is used below.
    -->
    <!--
    <Connector port="8443" protocol="org.apache.coyote.http11.Http11AprProtocol"
               maxThreads="150" SSLEnabled="true" >
        <UpgradeProtocol className="org.apache.coyote.http2.Http2Protocol" />
        <SSLHostConfig>
            <Certificate certificateKeyFile="conf/localhost-rsa-key.pem"
                         certificateFile="conf/localhost-rsa-cert.pem"
                         certificateChainFile="conf/localhost-rsa-chain.pem"
                         type="RSA" />
        </SSLHostConfig>
    </Connector>
    -->

    <!-- Define an AJP 1.3 Connector on port 8009 -->
    <!--禁用AJP协议-->
    <!--<Connector port="8009" protocol="AJP/1.3" 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 -->

    <!-- You should set jvmRoute to support load-balancing via AJP ie :
    <Engine name="Catalina" defaultHost="localhost" jvmRoute="jvm1">
    -->
    <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" -->
        <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>