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

The following will bring you some types of load balancing. I hope it can give you some help in practical application. There are many things involved in load balancing, not many theories, and there are many books online. Today, we will use the accumulated experience in the industry to make an answer.

How many types of load balancing are there? Load balancer consists of multiple CVMs to form a set of servers in a symmetrical manner, and there can be several different types.

Load balancing based on DNS

Load balancing is completed by random name resolution in DNS effectiveness. In the DNS server, multiple different addresses can be considered to be configured with the same name, and the client that eventually queries the name will get one of the addresses when it parses the name. Therefore, with regard to the same name, different customers get different addresses at different times, and they will access Web servers at different addresses, and then achieve the purpose of load balancing.

Reverse acting load balancing

Using the acting server, you can forward the request to the internal Web server, so that the acting server can evenly forward the request to one of several internal Web servers, and then achieve the purpose of load balancing. This kind of acting method is different from the general acting mode, the standard acting mode is that customers use acting to access multiple external Web servers, and this acting mode is used by multiple customers to access internal Web servers, so it is also called reverse acting mode. Apusic load balancers fall into this type.

According to the load balancing technology of NAT

The network address is translated between an internal address and an external address so that a computer with an internal address can access the external network, and when a computer in the external network accesses an external address owned by the address translation gateway, the address translation gateway can forward it to a mapped internal address. Therefore, if the address translation gateway can uniformly transform each connection into a different internal server address, then the computers in the external network communicate with the server on the address they have changed, so as to achieve the purpose of load distribution.

The above is the introduction of several kinds of load balancer. You can click on load balancer to select products and services.

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