sticky connections load balancing

The reading and writing separation and load balancing of MySQL database are usually realized by the third party software. It can also be implemented through the MySQL driver, such as Com.mysql.jdbc.ReplicationDriver.Detailed documentation See also: http://dev.mysql.com/doc/refman/5.5/en/connector-j-info.html The code is as follows Copy Code Import java.sql.Connection;Import Java.

on the Web server. (1) The upstream command of the scheduling algorithm nginx is used to specify the backend servers used by proxy_pass and fastcgi_pass, that is, the reverse proxy function of nginx, therefore, the two can be combined to achieve load balancing, while nginx also supports multiple scheduling algorithms: 1. Round Robin (default) each request is distributed to different backend servers one by

; }}EOFsystemctl restart nginx?Nginx load Balancing scheduling algorithm and its configuration? Load Mode Load Description Round? Robin (default) Incoming requests are assigned to different back-end servers sequentially, and even if a backend server goes down during us

: # #workers.properties # #list theworkersbyname worker.list=dlog4j,status #localhostserver1 #------------------------ worker.s1.port=8009 worker.s1.host=localhost worker.s1.type=ajp13 #localhostserver2 #------------------------ worker.s2.port=8010 worker.s2.host=localhost worker.s2.type=ajp13 worker.s2.stopped=1 worker. DLOG4J.TYPE=LB worker.retries=3 worker. Dlog4j.balanced_workers=s1,s2 worker. Dlog4j.sticky_session=1 worker.status.type=status Description First we configu

Author: Early Zenwen Email:wenchu.cenwc@alibaba-inc.com blog:http://blog.csdn.net/cenwenchu79 Date:2009-5-26 Directory Demand turns to learning ... 2 "Soft" load balancing ... 2 LVS (Linux Virtual Server) ... 3 Virtual Server three mode introduction ... 3 Virtual server Three comparison of modes ... 5 Virtual Server three mode practice ... 6 Simple stress test in three different modes ... 9 Ha-proxy. 10 Ha

"Php_value Session.save_path "tcp://ip:11211"2. In one application:Ini_set ("Session.save_handler", "memcache");Ini_set ("Session.save_path", "tcp://ip:11211");Also be sure to comment out the following; Session.save_path= "/var/lib/php/session"and open the extension=memcache.so.Reboot Apache, check the phpinfo "registered save handlers" will have "files Usermemcache" These 3 available, if there is proof installedmemcached Server execution and results[Email protected] ~]# memcached-tool127.0.0.1:

with the proxy server, 3) speed up the website access speed, alleviate the load of the Web server. (a), scheduling algorithm nginx upstream instructions used to specify the Proxy_pass and Fastcgi_pass used by the back-end server, the Nginx reverse proxy function, so can be combined to use to achieve load balancing purposes, Nginx also supports a variety of sched

number of connections for the client (for the client side) userhaproxygroup haproxydaemon # turn on stats unix socketstats socket/var/lib/haproxy/stats # response # main frontend which proxys to the backends # expose frontend main *: 80 # method 1 # bind *: 80 # method 2 # bind *: 8080 # can only be used for frontend and listen; # maxconn can also be defined here or after listen, defines the maximum number of concurrent

cluster.schedulingPolicy : var cluster = require (' cluster '); Set this cluster.schedulingpolicy = cluster before calling another cluster function . Sched_none; Cluster.fork (); or adjust the scheduling strategy through environment variables NODE_CLUSTER_SCHED_POLICY : $ export node_cluster_sched_policy= "None" # "RR" is Round-robin $ NODE app.js If you don't want to affect your shell environment, put it in one line of commands: $ env node_cluster_sched_policy= "None" NODE app.

-click Network Neighborhood → Properties →tcp/ip→ set IP address, default gateway, subnet mask (note: Set first: 255.255.255.0). Start → run →regedit→ find entries in the registry that are related to Microsoft Loopback Adapter, and change the subnet mask to: 255.255.255.255. Configure the system to run the appropriate services and configure the configuration that is appropriate for Control Manager management so that it can be used in Control Manager. 2.4 Performing content synchronization in

Introduction to load Balancing clustersMain open source software LVs, keepalived, Haproxy, Nginx, etc.The LVS belong to 4 layer (network OSI 7 layer model), Nginx belongs to 7 layer, Haproxy can be considered as 4 layer, can also be used as 7 layerKeepalived Load balancer is actually the LVS LVS this 4-layer load balan

:00:00:00:00:00inet 127.0.0.1/8 Scope host Loinet 192.168.137.80/32 BRD 192.168.137.80 Scope Global lo:0INET6:: 1/128 Scope HostValid_lft Forever Preferred_lft Forever@web02 ~]# IP A1:lo: Link/loopback 00:00:00:00:00:00 BRD 00:00:00:00:00:00inet 127.0.0.1/8 Scope host Loinet 192.168.137.80/32 BRD 192.168.137.80 Scope Global lo:0INET6:: 1/128 Scope HostValid_lft Forever Preferred_lft ForeverThree, LVS load Balancin