external load balancer

from:http://yuhongchun.blog.51cto.com/1604432/697466 Now the trend of Web site development on the use of Network Load balancing with the increase of site size according to different stages to use different technologies:One is the hardware to carry out, the common hardware has more expensive NetScaler, F5, Radware and array and other commercial load balancer, it

Server load balancerFirst, let's take a brief look at what server load balancer is. Simply understanding what it means literally can explain that N servers are equally loaded, A server is not idle because of its high load downtime. The premise of server load

system version : Ubuntu 14.04.3 LTSServer Preparation :lb01-> ifconfig Display Result: 192.168.91.136 effect: Install keepalived and Nginxlb02-> ifconfig Display Result: 192.168.91.135 effect: Install keepalived and Nginxweb01-> ifconfig Display Result: 192.168.91.134 effect: Install Nginx is responsible for showing index.html pageweb02-> ifconfig Display Result: 192.168.91.137 effect: Install Nginx is responsible for showing index.html pageOperating principle1 Nginx acts as a Web server on WEB0

LVS is an open-source software that implements simple load balancing on the Linux platform. LVS is a Linux virtualServer stands for a Linux virtual server.Advantages:1. Open-source, free2. You can find some technical resources online.　3. Some advantages of software Load BalancingDisadvantages:1. There are common shortcomings of open-source products. The core is that there is no reliable support service and

LoadRunner again, we can see that the annoying "1024 error" is not reported in Error.log.Of course, in Nginx, the file cache is also supported, in order to cache those static files on the local nginx server, but to modify its config file configuration, as follows:VI nginx.confEnter the following at the appropriate node in the file:Location ~. *\. (GIF|JPG|JPEG|PNG|BMP|SWF|JS|HTML|HTM|CSS) $ {#指定缓存文件类型Expires 7d; #设置浏览器过期时间7天Root Data/nginx_cache/iis; #静态文件根目录目录 (must correspond to Proxy_temp_pa

I once talked to my colleagues about the Server Load balancer in RAC. When talking about the distribution mechanism on the server side, we couldn't tell you clearly. I would like to summarize it for future use. I once talked to my colleagues about the Server Load balancer in RAC. When talking about the distribution mec

Based on the huge network structure, the use of cluster servers brings a lot of traffic and other load problems. In contrast, Server Load balancer technology has also emerged. Every technology requires Product Support. Now let's get to know one of F5 Server Load balancer. Fi

I. Concepts of reverse proxy and Server Load balancer Before understanding the concepts of reverse proxy and Server Load balancer, we must first understand the concept of a cluster. Simply put, a cluster is a server that does the same thing, such as a web cluster, database cluster, and storage cluster, the cluster has

LoadRunner again, we can see that the annoying "1024 error" is not reported in Error.log.Of course, in Nginx, the file cache is also supported, in order to cache those static files on the local nginx server, but to modify its config file configuration, as follows:VI nginx.confEnter the following at the appropriate node in the file:Location ~. *\. (GIF|JPG|JPEG|PNG|BMP|SWF|JS|HTML|HTM|CSS) $ {#指定缓存文件类型Expires 7d; #设置浏览器过期时间7天Root Data/nginx_cache/iis; #静态文件根目录目录 (must correspond to Proxy_temp_pa

Three major software load balancer comparisons (LVS, Nginx, HAproxy)(Information from the network, made part of the supplementary instructions)LVS:1. Strong anti-load capability, high performance, can reach F5 60%, low memory and CPU resource consumption2. Work in the Network 4 layer, through the VRRP protocol (for Proxy only), the specific traffic is handled by