device in front of the cluster to achieve traffic distribution.Load Balancing (Balance), which means that load (work tasks, access requests) are balanced and distributed across multiple operating units (servers, components) for execution. is the ultimate solution for high-performance, single-point-of-failure (high availability), scalability (horizontal scaling).This article is the first article on
The company last year on the F5, easy to use is good, but the cost is too high, so recently has been studying the soft load balancing this together, it happened early this year Google Open source seesaw, let oneself can bypass many detours. This is a summary of the load balancing policies that you learned before. -sunf
Objective:
With the explosive growth of Internet information, load balancing (loading balance) is no longer a very unfamiliar topic, as the name implies, load balance is to spread the load to different service units, not only to ensure the availability of services, but also to ensure that the response fast enough to g
In many existing network applications, sometimes a server cannot meet the requirements of the client. In this case, you can only add servers to solve the problem.
Is there a way or technology to solve this problem? Use the network load balancing cluster in Windows 2000 or Windows Server 2003 (This article describes how to implement the Network Load
Four common methods for server load balancing in enterprisesIn order to improve the performance and workload of the server, enterprises usually use the technology of DNS server, network address translation and so on to realize multi-server load balancing, especially the Internet web sites of enterprises outside, many o
1.http REDIRECT Load BalancingThe HTTP redirect server is a normal application server whose only function is to compute a real Web server address based on the user's HTTP request and write the Web server address to the HTTP redirect Response (location header)The status code is 302, which is returned to the user's browser. Both the load server and the Web server are the IP of the public network.This kind of
Source: Network Collection
In general, load balancing is the client's request to the backend of the various real servers to achieve load balancing purposes. There is another way is to use two servers, one as the primary server (master), the other as a hot Standby, the request is all to the primary server, when the pr
XX Telecom used a single load balancing, 2 VPDN routers to do load balancing, its topology is as follows:
Load balancing equipment divided into 2 network segments, deployed in a serial connection, the top 2 7610 routers, the ne
system expansion capability.
More than two servers to work together must involve load balancing problem, the current commonly used load balancing technology are: NAT load balancing, reverse proxy
original link: https://www.jianshu.com/p/fa937b8e6712
Brief introduction
Difference
Advantages and disadvantages of Nginx, LVS and haproxy load balancer software
First, Introduction
* * The so-called four layer is based on ip+ Port load balancing, seven layer is based on the URL and other application layer information
Citrix NetScaler Load Balancing algorithmhttp://blog.51cto.com/caojin/1926308As we all know, Citrix NetScaler, which delivers products as a new generation of applications, has the industry's leading data control, application delivery capabilities, but as one of the fundamental content of ADC capabilities, it is not possible to adapt to so many scenarios without a robust, diversified equalization algorithm I
AJP protocol stack. It is developped in httpd-2.1and integrated in it. We have also developed a new proxy_balancerModule for load Balancing HTTP and AJP protocol stacks.
JK'll is fully supported for all other Web servers.The next JK release are planned for the ' end of November.Lots of code from JK2 has been ported to JK
2.tomcat Cluster Mode:A.deltamanager--The way it is now used: internal machine clust
Today, we are going to introduce NLB, Network Load BalancingNetwork Load Balancing, referred to as NLB, allows you to propagate incoming requests to up to 32 servers, which means you can use up to 32 servers to share external network request services. Network Load Balancing
I. NLB test environmentSet up an NLB experiment environment as shown in 1. The computer Server is a domain controller and DNS Server, the client and client2 are member servers, and the domain name is ittongluren.com. The IP address of all computer gateways is 192.168.0.1, and the preferred IP address of the DNS server is 192.168.0.2. 2nd NICs are installed on the computer server and client for connection between nodes. The IP address of the network load
1: HTTP redirection
The so-called HTTP redirection is to identify the new URL by modifying the location in the HTTP Response Header, and then return it to the client, so that the client can make a new request based on the URL identified by the location.
This is the simplest and most lightweight Load Balancing implementation solution. We can use Asp.net to implement it like this. For example, in the main
From: http://hi.baidu.com/_kouu/item/479891211a84e3c9a5275ad9
In an SMP (symmetric multi-processor) Environment, each CPU corresponds to a run_queue (executable Queue ). If a process is in the task_running state (executable State), it will be added to one of the run_queue (and will only be added to one run_queue at the same time ), so that the scheduler can schedule it to run on the CPU corresponding to run_queue.A cpu corresponds to a run_queue design, which has the following advantages:1. A pr
absrtact : For a large web site, load Balancing is the eternal topic. With the rapid development of hardware technology, more and more load balancing hardware devices emerge, such as F5 Big-ip, Citrix netscaler, Radware, etc., although it can solve the problem, but its high price is often prohibitive, So
three types of LVS load Balancing modesIn the Scheduler implementation technology, IP load Balancing technology is the most efficient, IP virtual Server Software (IPVS) is implemented in the Linux kernel?LVS Load Balancing Mode---
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
This blog reposted from: http://blog.csdn.net/u014649204/article/details/25115039
The design of the balancing algorithm directly determines the performance of the cluster in load balancing. Poor design of the algorithm will lead to load imbalance in the cluster. The main task of the general
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