sticky connections load balancing

NetScaler is the industry-leading service delivery platform. NetScaler supports a wide range of platforms with comprehensive application security settings, acceleration, and load balancing (including GSLB) capabilities. The main advantages of NetScaler are as follows:1) Powerful load balancing: The NetScaler has a powe

Nginx Version: 1.9.1 Algorithm Introduction Consistent hashing algorithms are often used to load balance when the backend is a caching server. The advantage of using a consistent hash is that when you add or subtract a clustered cache server, only a small amount of caching is invalidated and the source is smaller. In Nginx+ats/haproxy+squid and other CDN architectures, the load

Test environment is local, test software is:Nginx-1.6.0,apache-tomcat-7.0.42-1. Apache-tomcat-7.0.42-2. Apache-tomcat-7.0.42-3Using Nginx to do load balancing, three Tomcat do web-detailed business processing.Nginx Configuration nginx.conf:#Nginx所用用户和组. #user NIUMD NIUMD is not specified under window; #user Nobody, #工作的子进程数量 (usually equal to the number of CPUs or twice times the CPU) Worker_processes 2; #

scheduler are processed. When a node has a failure, as in the scheduler, it is quarantined. Wait for the error to be excluded before you re-include the server pool.Tier Three: Shared storage: Provides stable, consistent file access services for all nodes in the server pool. Ensure the consistency of cluster content. This means that all server files are the same.3. load Balancing scheduling algorithm. We kn

properties. The contents of the document are as follows: [Root@node1 bin]# Vim/etc/httpd/extra/workers.properties Worker.list = TOMCAT1,STAT1 Worker.tomcat1.type = ajp13 Worker.tomcat1.host = 192.168.0.1 Worker.tomcat1.port = 8009 Worker.tomcat1.lbfactor=1 Worker.stat1.type = Status Restart the HTTPD service and test [Root@node1 bin]# Service httpd restart The test page is as follows With the above configuration and testing, now that Apache is implemented based on Mod

as backup servers. Advantages: 1) high reliability; 2) a certain degree of redundancy; 3) it is scalable in the name of high reliability. Disadvantages: 1) No Server Load balancer 2) No guaranteed Redundancy 3) No scalability in writing Load Speed: 1) reading and writing is equivalent to a separate server. Application scenarios: 1) applications requiring high reliability and read operation-intensive 4. MyS

groups, data (database) server groups. Each set of server groups is configured with a virtual IP. Students access these application servers over the Internet. Each group of servers is connected to the Alteon layer fourth switch to implement load balancing of application services on the switch. The Alteon layer fourth switch monitors the availability of the server, including physical

the Real-server. ipvs implements eight load scheduling algorithms. Four scheduling algorithms are described here: RR is called scheduling: Equal distribution of R, regardless of load. WRR Weighted Round scheduling: Set high/low weights and assign them to R. Minimum LC connection scheduling: Dynamically assigned to R with few established connections. Wlc weig

First, the toolnginx-1.8.0apache-tomcat-6.0.33II. ObjectivesA tomcat cluster for high-performance load balancing:　　Third, step1, first download nginx, to download stable version:　　2. Then extract two tomcat, named Apache-tomcat-6.0.33-1 and Apache-tomcat-6.0.33-2, respectively:　　3. Then modify the two Tomcat boot ports, 18080 and 28080, respectively, to change the first Tomcat as an example to open the Serv

62, Load Balancing cluster introduction, LVS Introduction, LVS scheduling algorithm, LVS NAT mode constructionFirst, load Balancing cluster introductionMain open source software LVs, keepalived, Haproxy, Nginx, etc.The LVS belongs to 4 layer (network OSI 7 layer model), Nginx belongs to 7 layer, Haproxy can be consider

ports listen 80; # The listening port server_name localhost; # The listening server # charset koi8-r; # access_log logs/host. access. log main; # The Reverse oblique rod represents all connections. This configuration is used to assign all connections to the upstream agent named app1 for load balancing. location/{proxy

Linux load balancing based on two-NIC binding technology for PlatformMaintaining high availability of servers is an important factor in an enterprise-wide IT environment. One of the most important is the high availability of server network connections. Network interface card (NIC) binding technology helps ensure high availability features and provides additional

has established, and when a request is dispatched to a server, its number of connections increases by 1, and its number of connections is reduced by one when the connection is aborted or timed out.Four, weighted minimum connection scheduling (Weighted least-connection scheduling) WLCThe weighted minimum connection scheduling (Weighted least-connection scheduling) algorithm is a superset of the minimum conn

, connect slave, when Connection.readonly=false, Connect Master Load Balancing: The code is as follows Copy Code Jdbc:mysql:loadbalance:Master:3306,slave1:3306,slave2:3306/dbnameWhen using the following connection string:jdbc:mysql:loadbalance://dbmaster:3306,dbslave1:3306,dbslave2:3306/ dbnameConnections are load-balanced between al

Brief introductionHaproxy is a free and open source software written in the C language that provides high availability, load balancing, and application proxies based on TCP and HTTP. 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