Shulou(Shulou.com)06/03 Report--

Below, I will bring you some kinds of load balancing algorithms, hoping to give you some help in practical application. There are many things involved in load balancing, not many theories, and there are many books on the Internet. Today, we will use the accumulated experience in the industry to do an answer.

What are several load balancing algorithms? The abbreviation of load balancer is SLB, which is used to expand the bandwidth of existing network devices and cloud servers, increase throughput, enhance network data processing capacity, and improve network flexibility and availability.

At present, with the increase of traffic, the number of visits and data traffic of each core of the existing network increases rapidly, and its processing capacity and computing strength also increase accordingly, which makes a single server equipment can not bear at all.

In this case, if you throw away the existing equipment to do a large number of hardware upgrades, it will result in a waste of existing resources, and if you face the next increase in business volume, it will lead to another high cost of hardware upgrading. even high-performance equipment can not meet the needs of current business growth.

Load balancing technology provides a solution, and its main algorithms are as follows:

Weighted polling (WRR) algorithm

Each server is assigned a weight, which represents its ability to handle connections relative to other servers. A weight of n means that before SLB allocates traffic to the next server, it allocates n new connections to this server.

Weighted minimum connection (WLC) algorithm

SLB assigns new connections to the real server with the fewest active connections. Each real server is assigned a weight m, and the server's ability to handle active connections is equal to m divided by the sum of all server weights. SLB allocates new connections to real servers that have far fewer active connections than they can.

When using the weighted minimum connection (WLC) algorithm, SLB uses a slow start method to control access to the newly added real server. "slow start" limits the frequency of new connections and allows gradual increase to prevent server overload.

After reading the above about load balancing algorithms, if there is anything else you need to know, you can find out what you are interested in in the industry information or find our professional and technical engineers to answer them. Technical engineers have more than ten years of experience in the industry.

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