sticky session load balancer

Server Load balancer II-Basic knowledge of Server Load balancer In the previous article, we have been talking about the knowledge around Server Load balancer. Don't worry about it, and you can't eat hot tofu. A little bit every

each node, but for the application server, due to the existence of session, A better way is to distribute requests from the same session to the same node for processing. This is called sticky session load balancing, the former is called non-

can implement some shunting policies for http applications, such as targeting domain names and directory structures;2. Nginx has little dependence on the network. Theoretically, it can be pinged to implement the load function;3. Nginx installation and configuration are relatively simple and easy to test;4. It can also handle high load pressure and stability. Generally, it can support more than 10 thousand

is used, the Session should not be stored in the process. You must use StateServer or SqlServer for storage. If you stick to the storage in the process, you can choose to use the Client affinity (Client affinity), that is, all requests of the customer have the same server for response and will not be forwarded to other servers, this sacrifices reliability. When the server fails, the request cannot be forwarded to other servers for service. The result

Recently want to be able to configure load balancing, in the virtual machine above, but the Internet to find a lot of information is fragmented, for people who do not know, a lot of not enough detail, recently finally done, the specific steps to write down, convenient for you to read the studyThis experiment requires the installation of Nginx if not installed, please refer to:Linux installation nginx:http://www.cnblogs.com/aspirant/p/6714548.html(1) O

name in the mod_jk.conf file.Worker. list = dispatcher, status# Define Node1Worker. tomcat1.port = 8019Worker. tomcat1.host = localhostWorker. tomcat1.type = ajp13Worker. tomcat1.lbfactor = 1# Worker. tomcat1.connection _ pool_size = 10# Worker. worker at1.connection _ pool_timeout = 600# Worker. worker at1.socket _ connect_timeout = 300# Define Node2Worker. tomcat2.port = 8029Worker. tomcat2.host = localhostWorker. tomcat2.type = ajp13Worker. tomcat2.lbfactor = 1# Worker. tomcat2.connection _

Five Policies for configuring Server Load balancer using nginx in the production environment: nginx Server Load balancer Nginx upstream currently supports five allocation methods1. Round Robin (default) Each request is distributed to different backend servers one by one in chronological order. If the backend servers ar

Common Parameters and basic usage of ipvsadm In the Server Load balancer cluster, and ipvsadm In the Server Load balancer Cluster ---- Fixed Scheduling Rr: Argument Wrr: weighted argumentWeight, weighted Sh: source hash, source address hash Dynamic SchedulingLc: Minimum LinkActive * 256 + inactiveWlc: weighted least Li

--add TomcatService Tomcat start Services Build a test SiteCd/usr/local/tomcat/webappMKDIR-PV Testapp/{web-inf,classes,meta-inf,lib} Set up homepageVim testapp/index.jsp Test Curl http://localhost:8080/testapp/index.jsp 3. ha222 Host configuration is the same as ha1114. Nginx Load Balancer Scheduler rs1 Configuration Install packageDownload the latest stable version of nginx-1.8.0Http

Our product has two module, deployed on separate Linux machine, module 1 need to launch HTTP request to Module 2 to obtain service. Since Module 2 has multiple units, we will deploy a load balancer (elb,elastic load Balancer) before Module 2. We're deployed in AWS, so we're using AWS ELB.　　　　AWS Elb also provides anoth

When you use load balancing, you will experience session retention problems, which are commonly used in the following ways:1.IP Hash, assigning requests to different servers based on the IP of the client2.cookie, the server sends a cookie to the client, and a request with a specific cookie is assigned to its publisherNote: Cookies require browser support and sometimes reveal data 1.

The cookie differs from the session, one on the client and one on the server.Environment Nginx 1.8.0Centos6. Xsticky:1.2.5 wget https://bitbucket.org/nginx-goodies/nginx-sticky-module-ng/get/master.tar.gzCookie load balancing is more obvious than iphash compared to one of the features: the Equalization of the intranet NAT user. And Iphash can't do it.Yum Install

Original English version, Chinese versionTony TangTranslation Arrangement In the first part, I briefly described the various factors that need to be taken into account during the design of a large J2EE system with upgrading and high reliability. This article discusses Tomcat's support for cluster, Server Load balancer, fault tolerance, session replication, and ot

. worker2.lbfactor= 3.5worker.worker2.cachesize= 10worker. worker2.cache _ timeout= 600worker. worker2.socket _ keepalive = 1 worker 'worker2' want ajp13 connection to be dropped after 5mn (timeout) worker. worker2.socket _ timeout = 300 Clarification: in the previous example, the worker request control system sends a KEEP-ALIVE signal over the connection. Note: in ajpv13, the default port is 8009. 4. set lb Worker attributes: A server load

CentOS by default) Program code working on the netfilterINPUT hook on the kernel; its cluster function depends on the Cluster Server rules defined by ipvsadm; Supports a wide range of services based on TCP, UDP, SCTP, AH, EST, AH_EST, and other protocols; 4. Key points for timing in a server Load balancer cluster: (1) session persistence

parameters:sticky [Name=route] [Domain=.foo.bar] [path=/] [expires=1h] [HASH=INDEX|MD5|SHA1] [ no_fallback];Name: can be any string character, default is routedomain: which domain name can be used under this cookiepath: which path to enable sticky, for example path/test, Then only test this directory will use sticky do load balancing Expires:cookie expiration ti