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"E-commerce" Nginx+redis+tomcat realize session sharing cluster

Source: Internet
Author: User
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This document records the process of Nginx+redis+tomcat implementing session sharing.

Tomcat-redis-session-manager components:https://github.com/jcoleman/tomcat-redis-session-manager

Tomcat-redis-sessoin-manager Support for Tomcat:

(1) Tomcat6: Support, require JDK 1.6, need to introduce Tomcat-redis-session-manager-1.2-tomcat-6.jar, but now deal with the state of non-maintenance

(2) TOMCAT7: Support, JDK can be 1.6 or 1.7, need to introduce tomcat-redis-session-manager-1.2-tomcat-7.jar; If Tomcat-redis-session-manager-1.2-tomcat-7-java-7.jar is introduced, it only supports JDK1.7

(3) TOMCAT8: Currently not supported, you can try Https://github.com/chexagon/redis-session-manager (not actually verified)

Component Downloads: https://github.com/jcoleman/tomcat-redis-session-manager/downloads

Working with component versions

nginx:1.8.0

Tomcat Two: 6.0.44

redis:2.4.10

Jdk:1.6.0_34

(1) Place all of the following dependent jar packages in $tomcat_home/lib:

Jedis-2.0.0.jar Tomcat-redis-session-manager-1.2-tomcat-6.jar Commons-pool-1.5.5.jar

(2) Two Tomcat configuration conf/context.xml, respectively, added:

XML code
  2. <Valve classname="com.radiadesign.catalina.session.RedisSessionHandlerValve" />
  4. <Manager classname="Com.radiadesign.catalina.session.RedisSessionManager"
  6. host="localhost"
  8. port="6379"
  10. database="0"
  12. maxinactiveinterval=" /> "
<valve classname= "Com.radiadesign.catalina.session.RedisSessionHandlerValve"/><manager classname= " Com.radiadesign.catalina.session.RedisSessionManager "         host=" localhost "          port=" 6379 "         database=" 0 "          maxinactiveinterval= "/>"

Also, configure two Tomcat HTTP listener ports of 6181 and 6182, respectively

(3) Nginx configuration:

Java code
  2. Upstream Cluster_redis {
  4. Server localhost:6181;
  6. Server localhost:6182;
  8. }
  10. server {
  12. Listen 6180;
  14. server_name localhost;
  16. Location/{
  18. Proxy_pass http://cluster_memcached;
  20. }
  22. }
Upstream Cluster_redis {          server localhost:6181;          Server localhost:6182;     }     server {         listen 6180;         server_name localhost;         Location/{           proxy_pass http://cluster_memcached;         }     }

Here the Nginx listener port is configured to be 6180, and all requests are reversed to proxy to the 6181 and 6182 tomcat clusters.

(4) Test code session.jsp:

JSP code
  2. <%@ page import="java.util.Enumeration"%>
  4. <%@ page contenttype="text/html;charset=utf-8" language="java"%>
  10. <title>session test</title>
  12. <%
  14. String key = Request.getparameter ("SessionKey");
  16. String value = Request.getparameter ("Sessionvalue");
  18. if (key! = NULL &&! "". Equalsignorecase (Key.trim ())) {
  20. Session.setattribute (key, value);
  22. }
  24. %>
  28. <body>
  30. <form action="session.jsp" method="POST" >
  32. <input type="text" name="SessionKey" value="Key1" ><input type="text" Name=" Sessionvalue "value="value1 ">
  34. <input type="Submit" value="Submission" >
  36. </form>
  38. "/")%>
  40. <table>
  42. <tr>
  44. <th>key</th>
  46. <th>value</th>
  48. </tr>
  50. <%
  52. enumeration<string> keys = Session.getattributenames ();
  54. while (Keys.hasmoreelements ()) {
  56. String k = Keys.nextelement ();
  58. String v = (string) session.getattribute (k);
  60. %>
  62. <tr>
  64. <td><%=k%></td>
  66. <td><%=v%></td>
  68. </tr>
  70. <%
  72. }
  74. %>
  76. </table>
  78. </body>
<%@ page import= "java.util.Enumeration"%> <%@ page contenttype= "Text/html;charset=utf-8" language= "java"% > 
It is important to note that the Tomcat-redis-session-manager component does not provide support for Redis clusters. The author's explanation for the problem is to recommend using a REDIS proxy service such as Twitter's twemproxy or bowl pod Codis.
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"E-commerce" Nginx+redis+tomcat realize session sharing cluster

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