aws elastic load balancer sticky sessions

Session retention is one of the most common problems in load balancing and is a relatively complex issue.Session hold is sometimes called sticky session (Sticky Sessions).Before we introduce session-keeping techniques, we have to take some time to figure out the concepts: what is a connection (Connection), what is a se

AWS EC2 Server Configuration load balancer steps:1. General Load BalancerAt least two EC2 instances, Here take the Centos6.7 system as an example to install an Apache httpd server default 80 port, or use a different server and port also line, configure the load

Elastic Load balancer is an important feature in EC2. It can be used with auto scaling and The multip-Az of RDS to implement a very cost-effective and highly available structure. Let's first look at the most basic ELB structure. ELB uses DNS rotation to distribute data and achieve high availability for user requests. 650) This. width = 650; "src =" http://s3.51c

=" float: none; "title=" Tomsamlee1.png "alt=" Wkiom1f3coztf69naac-raenpug512.png "/>650) this.width=650; "src=" Http://s1.51cto.com/wyfs02/M00/88/6C/wKioL1f3cO_jPD00AADBjw-xilA024.png "style=" float: none; "title=" Tomsamlee2.png "alt=" Wkiol1f3co_jpd00aadbjw-xila024.png "/>Configure HTTPD to implement load balancing reverse proxy tomcatThe configuration file looks like this:# vim/etc/httpd/conf.d/proxy.confRestart the HTTPD service access test as fo

. Azure load Balancing currently supports three distribution modes:1, five-tuple,2, Ternary,3, two-tuple. load Balancing set on the portal defaults to a five-tuple (source IP, source port, Destination IP, destination port, protocol type) to calculate the hash value. If a two-tuple (source IP, Destination IP) Distribution mode is used, the connection from the same client will be distributed to the same serve

Apache HTTP Server is selected as the front-end Server Load balancer, and two Tomcat clusters are selected at the backend. The selected configuration method is session sticky (sticky session ), this method forwards requests from the same user to a specific Tomcat server to avoid session replication in the cluster. The

time is short of priority allocation. upstream Backserver {server server1;server server2;Fair;}5. Url_hash (third party)assign requests by the hash result of the access URL so that each URL is directed to the same back-end server, which is more efficient when the backend server is cached. upstream Backserver {server squid1:3128;server squid2:3128;hash $request _uri;Hash_method CRC32;}in servers that need to use load balancing, addProxy_pass http://ba