load balancing concept

LVS (Linux Virtual Server) is a software system for load balancing, consisting of the Ipvs framework that actually works in the kernel section and the ipvsadm used to write rules in user space. The way to work is to distribute access requests to the back-end production servers through the set of scheduling methods and rules. Dr. Zhangwensong is the founder and main developer of LVS.Load

by the request may go through different proxy servers each time. You can use multiple proxy servers to process requests to a high-volume content server. The advantage of this is that the content server can handle higher loads and be more efficient than when it is working independently. During the initial start period, the proxy server retrieves documents from the content server for the first time. After that, the number of requests to the content server will be greatly reduced. Squid

virtual server, using NAT mode (masquerading)Ipvsadm-a-T 192.168.18.10:80-r 172.17.0.3:80-mIpvsadm-a-T 192.168.18.10:3306-s RRIpvsadm-a-T 192.168.18.10:3306-r 172.17.0.2:3306-mIpvsadm-a-T 192.168.18.10:3306-r 192.168.18.11:3306-gipvsadm-d-T 192.168.18.10:3306-r 192.168.18.11:3306 # Delete backend server (RS)IPVSADM-E-T 192.168.18.10:3306-s WRR #-E modifies virtual server, scheduling algorithm for weighted pollingIPVSADM-E-T 192.168.18.10:3306-r 172.17.0.2:3306-w 2-m # Modify the weight of Rs to

written is too large to directlyMaximum burst disk.Resources have the maximum limit, the CPU is used for example 64-core model, the disk up to hundreds of T, then high sorry, no more cock machine, but there is no limit to the user's data and queries.The upper limit of connection pool resources, why to put the connection pool alone, the reason is that the business volume of a large,Disaster tolerance, although the transaction can ensure that the data is not lost after the restart, but the line o

First, the main technology of load balancing 1, Cisco Ethernet Channel (Network balance) 2, WINDOWSNLB Technology 3, Linuxlvs Technology 4, F5 and other load balancer (service balance) Second, redundancy technology 1, CSICOHSRP Hot backup route 2. Windows cluster Technology 3. Linuxha Cluster Technology 4. Ibmaix Cluster Here are the main explanations f

Tags: and hardware maximum operating system time between the INT database scoreIn regular operations, load balancing services are often used. The load balancer is divided into four-layer and seven-tier loads, so what's the difference between the two? Needless to say, the following are detailed:One, what is load balanci

Tags: objective physical detection initialize CTC actual application network session remains resumedReprint: http://www.cnblogs.com/kevingrace/p/6137881.htmlOne, what is load balancing1) Load Balancing (Balance) is built on the existing network structure, which provides an inexpensive and effective way to expand network equipment and server bandwidth, increase th

Download Nginx for Windows version Download Address: http://nginx.org/en/download.html Open cmd window CD C:\nginx pointing to Nginx directory Start Nginx start Nginx Nginx-s Stop//Stop NginxNginx-s Reload//Reload configuration fileNginx-s quit//exit Nginx I hung 2 test sites under IIS T T2, which are only index.html to ensure proper access to The following is mainly configured under the Nginx folder under the Conf folder nginx.conf file The simplest configuration Access http:/

Ten LVS cluster scheduling algorithms and load balancing theory, lvs Load Balancing I. Concept of LVS LVS (Linux Virtual Server): Linux Virtual Server; LVS is a server Load balancer device that does not provide any services. W

Server Load balancer is a server set composed of multiple servers in a symmetric manner. Each server is equivalent and can provide services independently without the assistance of other servers. Through a load balancing technology, requests sent from outside are evenly distributed to a server in the symmetric structure, and the server receiving the requests indep

we are talking about Load balancer, sometimes called a four-tier load balancer or seven-tier load balancing device, sometimes called a four-layer switch or seven-layer exchange. The four-layer load balancing device mainly analyzes

What is LVS??? Let's start with a brief introduction to LVS (Linux Virtual Server), which is actually a cluster (Cluster) technology that uses IP load balancing technology and content-based request distribution technology. The scheduler has a good throughput rate, transfers the request evenly to the different server execution, and the scheduler automatically shields off the server's failure, thereby forming

Nginx load balancing-expansion function (NGINX Plus), nginx Load Balancing Nginx load balancing-expansion feature (NGINX Plus). This article mainly introduces the functions of NGINX Plus, and updates across different versions such

OverviewIn our previous Windows platform distributed architecture practice-load balancing, we discussed the load balancing of Web sites through NLB (Network load Balancer) under the Windows platform and demonstrated its effectiveness through stress testing, which can be said

OverviewIn our previous Windows platform distributed architecture practice-load balancing, we discussed the load balancing of Web sites through NLB (Network load Balancer) under the Windows platform and demonstrated its effectiveness through stress testing, which can be said

The difference in principle between one or four-layer and seven-layer load balancingdiagram:Four-tier load balancing and seven-layer load balancing are simple differences in how they work:Overview:1. Four-layer load

Three LVS Load Balancing modes and eight Scheduling Algorithms for LVS Load Balancing Three LVS Load Balancing Modes In the implementation technology of the scheduler, the IP Server Load