"Tomcat" Tomcat + Memcached for session sharing

Overview

In Web projects, Tomcat's access is always limited, this time need to use the Tomcat cluster, multiple tomcat to consider the session sharing problem, here is a use of memcached to do session sharing solution

Environment

Operating system: Linux (CentOS 6..5 version)

Software: TOMCAT7

Memcached

Implementation principle

Tomcat + Memcached Implement session sharing flowchart

　　

Configuration

• Install Tomcat 2 and memcached 1, refer to "Linux" Tomcat installation and one server configuration multiple tomcat and "Linux" memcached installation
• Configure Tomcat, into the Tomcat installation directory lib, join: Required jar Package
  　　
  MAVEN relies on the following:
  

  1 <Dependency>2             <groupId>Asm</groupId>3             <Artifactid>Asm</Artifactid>4             <version>3.2</version>5         </Dependency>6 7         <Dependency>8             <groupId>Com.couchbase.client</groupId>9             <Artifactid>Couchbase-client</Artifactid>Ten             <version>1.4.11</version> One         </Dependency> A  -         <Dependency> -             <groupId>Com.googlecode</groupId> the             <Artifactid>Kryo</Artifactid> -             <version>1.04</version> -         </Dependency> -  +         <Dependency> -             <groupId>De.javakaffee</groupId> +             <Artifactid>Kryo-serializers</Artifactid> A             <version>0.11</version> at         </Dependency> -  -         <Dependency> -             <groupId>De.javakaffee.msm</groupId> -             <Artifactid>Memcached-session-manager</Artifactid> -             <version>1.8.2</version> in         </Dependency> -  to         <Dependency> +             <groupId>De.javakaffee.msm</groupId> -             <Artifactid>Memcached-session-manager-tc7</Artifactid> the             <version>1.8.2</version> *         </Dependency> $ Panax Notoginseng         <Dependency> -             <groupId>Com.googlecode</groupId> the             <Artifactid>Minlog</Artifactid> +             <version>1.2</version> A         </Dependency> the  +         <Dependency> -             <groupId>De.javakaffee.msm</groupId> $             <Artifactid>Msm-kryo-serializer</Artifactid> $             <version>1.8.2</version> -         </Dependency> -  the         <Dependency> -             <groupId>Com.esotericsoftware</groupId>Wuyi             <Artifactid>Reflectasm</Artifactid> the             <version>1.01</version> -         </Dependency> Wu  -         <Dependency> About             <groupId>Net.spy</groupId> $             <Artifactid>Spymemcached</Artifactid> -             <version>2.11.4</version> -         </Dependency>

  View Code

• In the context.xml file under the Tomcat installation directory, add:
  

  1 <Manager2         ClassName= "De.javakaffee.web.msm.MemcachedBackupSessionManager" 3 Memcachednodes= "n1:127.0.0.1:11211" 4 Sticky= "false" 5 Sessionbackupasync= "false" 6 Requesturiignorepattern=".*\. (ico|png|gif|jpg|jpeg|bmp|css|js|html|htm) $ " 7 Transcoderfactoryclass= "De.javakaffee.web.msm.serializer.kryo.KryoTranscoderFactory" 8       />

• In the Server.xml file under the Tomcat installation directory, add:
  

  1 <  name= "Catalina"  defaulthost= "localhost"  jvmroute= " TOMCAT1 ">

  The second tomcat is set jvmroute= "TOMCAT2" to distinguish Tomcat

• Add a test interface to Tomcat, session.jsp
  

  1 <%@ Page Language="Java"ContentType="text/html; Charset=utf-8"2 pageencoding="UTF-8"%>3 <BR>4SessionID:<%=Session.getid ()%>5 <BR>6Sessionip:<%=Request.getservername ()%>7 <BR>8Sessionport:<%=Request.getserverport ()%>9 <BR>

• In the same browser, open 2 Tomcat test interface, SessionID the same, indicating the session sharing through memcached, as follows
  
  

Note: This scheme and can be used in conjunction with Nginx, using Nginx distribution request to access different Tomcat, and the session is shared

"Tomcat" Tomcat + Memcached for session sharing