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

The following brings you two main ways to achieve load balancing. I hope it can give you some help in practical application. There are many things involved in load balancing, there are not many theories, and there are many books on the Internet. Today, we will use the accumulated experience in the industry to make an answer.

Under the idea of load balancing, multiple CVMs are symmetrical, and each server has the same status and can provide services independently without the assistance of other servers. Through the load sharing technology, the requests sent from the outside are distributed to a server in the symmetric structure according to certain rules, and the servers that receive the requests respond to the requests of the client independently.

A group of servers that provide services form an application server cluster (cluster) and provide a unified address. When a service request is sent to the cluster, a server is selected according to certain rules, and the service is directed to the server for load balancing.

Through the application of load balancing technology, the application service exceeds the limit that one server can only provide services for limited users, and multiple servers can be used to provide services for a large number of users at the same time. When a server fails, the load balancing server automatically detects and stops distributing service requests to the server, while other normal servers continue to provide services, thus ensuring the reliability of the service.

There are about four ways to achieve load balancer: the first is through DNS, but it can only achieve simple round-robin distribution and cannot handle faults. Second, if it is based on MS IIS,Windows 2003 server, it comes with load balancing services. The third is hardware, which can be achieved through the functions of the switch or special load balancer equipment. The fourth is software, which is carried out through a load balancer server and software is installed on it. Using Apache Httpd Server as the load balancer, Tomcat cluster nodes can do this in the fourth way using Tomcat. This approach is more flexible and the cost is relatively low. Another great advantage is that some strategies can be adopted according to the situation of the application and the server.

After looking at the above two main ways to achieve load balancing, 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 engineer to answer it. Technical engineers have more than ten years of experience in the industry.

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.