1.项目地址
https://github.com/redisson/redisson/tree/master/redisson-tomcat
2.主机规划
10.0.0.43 nginx
10.0.0.44 tomcat1
10.0.0.45 tomcat2
10.0.0.48 redis
3.tomcat的配置
3.1在全局context.xml或者server.xml中添加session manager
<Manager className="org.redisson.tomcat.RedissonSessionManager"
configPath="${catalina.base}/redisson.conf"
readMode="REDIS" updateMode="DEFAULT" broadcastSessionEvents="false"
keyPrefix=""/>
keyPrefix-应用于所有Redis键的字符串前缀。允许将不同的Tomcat环境连接到同一Redis实例。
-
readMode-读取会话属性模式。有两种模式可用：
- MEMORY-将属性存储到本地Tomcat Session和Redis中。进一步的会话更新使用基于Redis的事件传播到本地-Tomcat会话。
- REDIS-仅将属性存储到Redis中。默认模式。
broadcastSessionEvents-如果true再sessionCreated和sessionDestroyed事件会在所有Tomcat实例广播，并导致触发所有注册HttpSessionListeners。默认值为false。
-
updateMode-会话属性更新模式。有两种模式可用：
- DEFAULT-会话属性仅通过Session.setAttribute方法存储到Redis中。默认模式。
- AFTER_REQUEST-每次请求后，所有会话属性都存储到Redis中。当某些存储在会话中的对象更改了自己的状态而没有Session.setAttribute执行方法时，这很有用。
-
configPath-Redisson YAML配置的路径。更多配置请看：https://github.com/redisson/redisson/wiki/2.-Configuration
- 单实例配置文件：
---
singleServerConfig:
idleConnectionTimeout: 10000
connectTimeout: 10000
timeout: 3000
retryAttempts: 3
retryInterval: 1500
password: null
subscriptionsPerConnection: 5
clientName: null
address: "redis://10.0.0.48:6379"
subscriptionConnectionMinimumIdleSize: 1
subscriptionConnectionPoolSize: 50
connectionMinimumIdleSize: 24
connectionPoolSize: 64
database: 0
dnsMonitoringInterval: 5000
threads: 16
nettyThreads: 32
codec: !<org.redisson.codec.MarshallingCodec> {}
transportMode: "NIO"
- 集群配置：
---
clusterServersConfig:
idleConnectionTimeout: 10000
connectTimeout: 10000
timeout: 3000
retryAttempts: 3
retryInterval: 1500
failedSlaveReconnectionInterval: 3000
failedSlaveCheckInterval: 60000
password: null
subscriptionsPerConnection: 5
clientName: null
loadBalancer: !<org.redisson.connection.balancer.RoundRobinLoadBalancer> {}
subscriptionConnectionMinimumIdleSize: 1
subscriptionConnectionPoolSize: 50
slaveConnectionMinimumIdleSize: 24
slaveConnectionPoolSize: 64
masterConnectionMinimumIdleSize: 24
masterConnectionPoolSize: 64
readMode: "SLAVE"
subscriptionMode: "SLAVE"
nodeAddresses:
- "redis://127.0.0.1:7004"
- "redis://127.0.0.1:7001"
- "redis://127.0.0.1:7000"
scanInterval: 1000
pingConnectionInterval: 30000
keepAlive: false
tcpNoDelay: false
threads: 16
nettyThreads: 32
codec: !<org.redisson.codec.MarshallingCodec> {}
transportMode: "NIO"
3.2在tomcat1的webapps/ROOT目录下添加session.jsp
<html>
<head>
<title>test1</title>
</head>
<body>
SessionID is <%=session.getId()%> <BR>
SessionIP is <%=request.getServerName()%> <BR>
SessionPort is <%=request.getServerPort()%>
<% out.println("Response from tomcat1"); %>
</body>
</html>
3.3在tomcat2的webapps/ROOT目录下添加session.jsp
<html>
<head>
<title>test2</title>
</head>
<body>
SessionID is <%=session.getId()%> <BR>
SessionIP is <%=request.getServerName()%> <BR>
SessionPort is <%=request.getServerPort()%>
<% out.println("Response from tomcat2"); %>
</body>
</html>
3.4重启两个tomcat
catalina.sh stop
catalina.sh start
3.5使用nginx代理
cat /etc/nginx/conf.d/test.conf
upstream tomcat_endpoint {
server 10.0.0.44:8080;
server 10.0.0.45:8080;
}
server {
listen 80;
server_name node1.magedu.com;
location / {
proxy_pass http://tomcat_endpoint;
include proxy_params;
}
}
3.6检查nginx语法并重启
nginx -t
nginx -s reload
3.7在Windows hosts文件添加本地解析
10.0.0.43 node1.magedu.com
3.8测试访问
可以看到两个tomcat最终都取到了相同的session
-
代理到tomcat1上面的session
image.png -
代理到tomcat2上面的session
image.png
