A comprehensive interpretation of server load balancing technology

The size of the internet increases by one times every 100 days, and customers want to get 7 days of http://www.aliyun.com/zixun/aggregation/11632.html ">24 hours of uninterrupted availability and faster system response time,　　Rather than repeatedly see a site "Server Too Busy" and frequent system failures. With the increase of traffic volume and the rapid growth of traffic volume and data flow, the processing capacity and calculation intensity of the network are increased, which makes the single equipment unable to bear. In this case, if you throw away existing equipment to do a lot of hardware upgrades, this will cause the waste of existing resources, and if faced with the next increase in business, this will lead to a high cost of hardware upgrades, and even the performance of the outstanding equipment can not meet the current volume of business needs. Therefore, the load balancing mechanism arises.

Load-balancing (load Balance) is built on the existing network architecture, providing a cheap, efficient and transparent way to extend the bandwidth of network devices and servers, increase throughput, enhance network data processing capabilities, and increase network flexibility and availability.

Load balancing has two meanings: first of all, a large number of concurrent access or data traffic sharing on multiple node devices to deal with, reduce the user waiting for response time; second, the operation of a single heavy load on multiple node devices to do parallel processing, each node device processing end, the results are summarized, returned to the user, System processing capacity has been greatly improved.

What is load balancing

With the increase of traffic volume and the rapid growth of traffic volume and data flow, the processing capacity and computing strength of the existing network have been increased 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 transparent approach to this situation to extend the bandwidth of existing network devices and servers, increase throughput, enhance network data processing capabilities, and increase network flexibility and availability is a technology that loads balance (load Balance).

Where to use load balancing

In the domestic environment there are three places to use this function, first of all should be Internet cafes, internet cafes for bandwidth requirements higher, and because of domestic ISP confusion, some Internet cafes will also be used to multiple line access, so load balance on the Internet café is a very practical function, followed by enterprises and community operators. Enterprises will also have such demand, some enterprises on the network requirements are also very high, and even no network can not office. In addition, the community operators, community operators have many use of multiple line access, so that the load balance is very suitable.

How to use load balancing

Now many routes have load balancing function, can be directly set up on the route and then used, such as the soft route sea spiders, Ros, and so on, hard to route the Grand Connaught, Flying Fish star and so on. It should be noted that it is best to understand clearly the routing of specific model support before use.