Tomcat8.x版本优化

Tomcat server.xml配置文件

<?xml version="1.0" encoding="UTF-8"?>
	<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.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"
	                executor="tomcatThreadPool"
	                maxConnections="900"
	                enableLookups="false"
	                acceptCount="700"
	                maxPostSize="10485760"
	                disableUploadTimeout="true"
	                compression="on"
	                compressionMinSize="2048"
	                maxProcessors="1000"
	                minProcessors="5"         
	                compressableMimeType="text/html,text/xml,text/plain,text/css,text/javascript,application/javascript"
	                URIEncoding="UTF-8" />
	    <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>
	

• maxConnections：最大连接数
• enableLookups：当禁用DNS查询，为了提高性能，设置为false
• acceptCount：当线程数达到maxThreads后后续请求会被放入一个等待队列，这个acceptCount就是这个队列的大小，默认为100
• maxPostSize：以FORM URL参数方式提交post请求，限制提交最大的大小，默认2097152字节（2M）
• disableUploadTimeout：类似于Apache中的keeyalive一样,是否需要tomcat容器单独设置上传时间限制，这里是不用，还是使用标准的，不去给上传的附件单独做超时设置
• compression：设置是否开启GZip压缩HTTP 压缩
• compressionMinSize：启用压缩的输出内容大小，这里面默认为2KB
• maxProcessors：线程共享地址空间
• minProcessors：线程共享地址空间
• compressableMimeType：需要压缩的类型