unequal cost load balancing

The size of the Internet doubles every one hundred days. The customer wants to achieve uninterrupted availability within 7 days and fast system response time, rather than repeatedly seeing a site "server too busy" and frequent system faults. As the business volume increases, the traffic volume and data traffic increase rapidly, the processing capability and computing strength of each core part of the network also increase, making it impossible for a single device to undertake. In this case, if

effective way to extend the bandwidth of network devices and servers, increase throughput, enhance network data processing, and improve network flexibility and availability, balancing.Nginx/lvs/haproxy is currently the most widely used three load balancer software.The general use of load balancing is to use different technologies depending on the stage of the si

Today, the ' large server ' model has been replaced by a large number of small servers, using a variety of load balancing techniques. This is a more feasible approach that minimizes the cost of hardware. The advantages of ' more small servers ' outweigh the past ' large server ' patterns in two ways: 1. If the server goes down, the

133.0.0.1 255.255.255.252Router (config-if) IP nat outsideRouter (config-if) #exitRouter (config) #ip nat pool P2 192.168.1.2 192.168.1.4 netmask 255.255.255.0 Type rotaryRouter (config) #access-list 2 Permit 133.0.0.33Router (config) #ip nat inside Destination List 2 pool P2Router (config) #ip Route 0.0.0.0 0.0.0.0 s0/0Advantages, Disadvantages: Simple configuration, low cost, server is easy to maintain locally,

balancing requirements.software Load Balancing solution is to install one or more additional software on one or more servers corresponding operating system to achieve load balancing, such as DNS load BALANCE,APACHE,NGINX,LVX, etc

correspondingly, so that single server equipment cannot afford it at all. In this case, if you throw away an existing device to do a lot of hardware upgrades, this will result in the waste of existing resources and, if faced with the next increase in business volume, this will lead to a high cost of hardware upgrades again, and even the most performance-enhancing equipment will not meet the current business growth requirements. A cheap and effective

Balancing method in LVs.IP load Balancing can be used with hardware devices or software implementations. The main products of hardware equipment is F5-BIG-IP-GTM (abbreviation F5), software products are mainly LVs, HAProxy, NginX. Which LVs, Haproxy can work on the 4-7 floor, nginx work on the 7 floor. For a simple comparison of the three, you can refer to here.

not connect to the server, even if you immediately put 192.168.0.200 in mind The user's machine also has a DNS cache, and your settings will not take effect immediately. This low-cost, easy-to-configure load-balancing approach is typically used on SMTP because SMTP is inherently stateless and cannot be automatically retried at a time.Windows Network