Tomcat集成Memcached Session Manager方案

Posted 2021-02-02 rgqancy

http://repo1.maven.org/maven2/de/javakaffee/msm/memcached-session-manager/2.3.2/memcached-session-manager-2.3.2.jar

http://repo1.maven.org/maven2/de/javakaffee/msm/memcached-session-manager-tc7/2.3.2/memcached-session-manager-tc7-2.3.2.jar

http://repo1.maven.org/maven2/net/spy/spymemcached/2.9.1/spymemcached-2.9.1.jar

[[email protected] apache-tomcat-7.0.92]# cat conf/context.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
  the License.  You may obtain a copy of the License at

      http://www.apache.org/licenses/LICENSE-2.0

  Unless required by applicable law or agreed to in writing, software
  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.
-->
<!-- The contents of this file will be loaded for each web application -->
<Context>

    <!-- Default set of monitored resources -->
    <WatchedResource>WEB-INF/web.xml</WatchedResource>

    <!-- Uncomment this to disable session persistence across Tomcat restarts -->
    <!--memcached 
    <Manager className="de.javakaffee.web.msm.MemcachedBackupSessionManager"
        memcachedNodes="n1:172.17.1.255:11211,n2:172.17.1.13:11211"
        failoverNodes="n2"
        requestUriIgnorePattern=".*.(ico|png|gif|jpg|css|js)$"
        transcoderFactoryClass="de.javakaffee.web.msm.JavaSerializationTranscoderFactory"/>
    -->

    <!-- Uncomment this to enable Comet connection tacking (provides events
         on session expiration as well as webapp lifecycle) -->
    <!--
    <Valve className="org.apache.catalina.valves.CometConnectionManagerValve" />
    -->

</Context>

Add custom serializers to your webapp (optional)

If you want to use java‘s built in serialization nothing more has to be done. If you want to use a custom serialization strategy (e.g. because of better performance) this has to be deployed with your webapp so that they‘re available in WEB-INF/lib/.

As msm is available in maven central (under groupId de.javakaffee.msm) you can just pull it in using the dependency management of your build system. With maven you can use this dependency definition for the kryo-serializer:

<dependency>
    <groupId>de.javakaffee.msm</groupId>
    <artifactId>msm-kryo-serializer</artifactId>
    <version>1.9.7</version>
    <scope>runtime</scope>
</dependency>