multi wan load balancing

;Name:Key:Test: 172.25.44.1/test.jspSticky mode when the user accesses, as long as the access host Tomcat does not hang, it has been access to the sameserver2:bin/shutdown.shThe stored data is saved in 44.2, when 44.2 hangs, goes to 44.3, but the data before 44.2 is goneTherefore, the concept of cross storage is proposed.Memcache Cache cross-storage solves session problemsServer2 Server3Yum Install Memcached-y/usr/local/tomcat/conf/context.xml2023--28In session expiration as well as WebApp lifec

test by the core developers and users shows that it works well: The request connection is now evenly distributed. There is also a plan to turn the selection algorithm into a configurable or plugin-based approach.If you want to fall back to the previous assignment method, you can set the Cluster.schedulingpolicy:var cluster = require (' cluster '); // Set This before calling and other cluster functions. Cluster.schedulingpolicy = cluster. Sched_none;cluster.fork ();or use the NODE_CLUSTER_SCHED_

$fastcgi_script_name; the # include fastcgi_params;Bayi #} the the # Deny access to. htaccess files, if Apache ' s document Root - # concurs with Nginx ' s one - # the #location ~/\.ht { the # deny all; the #} the } - the the # Another virtual host using mix of ip-, name-, and port-based configuration the #94 #server { the # Listen 8000; the # listen somename:8080; the # server_name Somename alias Another.alias;98 About # location/{ - # root HTML;101 # index i

:: 1/128 Scope HostValid_lft Forever Preferred_lft Forever2:eth0: Link/ether 00:0c:29:af:00:4e BRD FF:FF:FF:FF:FF:FFinet 192.168.0.130/24 BRD 192.168.0.255 Scope Global eth0inet 192.168.0.150/32 Scope Global eth0Inet6 FE80::20C:29FF:FEAF:4E/64 Scope linkValid_lft Forever Preferred_lft ForeverStop keepalived:/etc/init.d/keepalived stop on the primary server and then check from the server to see if it is already tiedVirtual IP (VIP):[[Email protected]_back ~]# IP Addr1:lo: Link/loopback 00:00:00:0

operating system Solaris, SUN MySQL's share of the database market will increase further. Therefore, to deploy the MySQL server cluster with load balancing function in production environment has great practical significance for improving the speed, stability and scalability of enterprise database application system, and can also reduce the investment cost of application system effectively. This paper will

Build Practice lvs+keepalived Load BalancingKeepalived Overview1.keepalived is a powerful auxiliary tool specifically designed for LVS, mainly used to provide failover and health check function-to determine the LVS load Scheduler, node server availability, timely isolation and replacement of the new server, when the failed host to rejoin the cluster after recovery.Overview of the 2.keepalived hot-standby pr

memory and on the kernelTuning. With todays 64-bit systems and cheap RAM, there ' s plenty ofMargin. We had one user who reported 1 million established connectionsIn a bench, and several ones reported more than300k in production.InchLinux, by default, processes is limited to 1 million FDs so you needTo patch the kernel or to run in multi-process mode for this. I assumeIt's not this crazy to run several processes if you had to deal with1 million concu

synchronization to resolve.5 SSL ConfigurationTo generate a secret key under nginx/conf:#生成RSA密钥openssl dsaparam-rand-genkey-out myrsa.key 1024# generate the CA key: (To enter a password you remember) OpenSSL gendsa-des3-out Cert.key Myrsa. key# Use this CA key to create the certificate, need the password created in the previous step OpenSSL req-new-x509-days 365-key cert.key-out cert.pem# Set the certificate to the root dedicated chmod#生成免密码文件OpenSSL rsa-in cert.key-out cert.key.unsecureIf you

Haproxy provides high availability, load balancing, and proxies based on TCP and HTTP applications, supporting virtual hosting, which is a free, fast, and reliable solution. Haproxy is especially useful for Web sites that are heavily loaded, and often require session-hold or seven-tier processing. The haproxy runs on the current hardware and can support tens of thousands of concurrent connections. and its o

row in Set (0.00 sec) Error:no query specified3) Use Navicat connection Mycat, operation mode and connection physical MySQL library consistent, user admin, password admin, Port 8066 After the connection is successful, you will see the TestDB database and the test data table Add some data to the test table to save Perform a SELECT * from test to view the test operation and see that the data is not updated Cause: Mycat Query Sq is routed to B, so the result set read is incon

Use Network address translation to achieve multi-server load balancing. Abstract: This article discusses the server load balancer technology and load allocation strategies used by distributed network servers, and implements the server lo