What are the advantages of server load balancing

With the increased application traffic to your site, a server can not meet the application requirements, and the need for multiple server clusters, load balancing will be used this time, the load balancing advantages are those who do, and then one Kibbee said to know talk about
load balancing device the advantages of
load balancing to optimize the allocation of access requests between servers group, eliminating the load imbalance between servers, thus improving the reaction speed and overall performance of the system;
load balancing can be performed on the health of the server monitoring, timely detection of abnormal operation of the server, access and transfer requests to other servers may work properly, thereby improving the reliability of the server group using the negative control after the equalizer, the server can be flexibly increased according to the development of business, system improved scalability, while simplifying management.
Load balancer has a variety of forms, in addition to the load balancer as the independent significance, but in some load balancer integrated switching equipment, placed between the server and Internet links, some places will be the two network adapters function integrated into the PC, a connection to the Internet, a connection to the internal network backend server farm.
In general, hardware load balancing capabilities, superior performance in software, but costly. When the Web server as an image service, SSL (Secure Sockets Layer) session or database transactions and to optimize the load balancer may reflect the particular value.
When the need for server upgrades or system maintenance, to ensure the stability of the server out of service to avoid service interruption. When you have selected a server to be out of service, it will not allocate any new user to the server. However, it can complete the service to the server for the current user. Thus ensuring no interruption of service, and simplifies the management of server farms.
Intelligence Server service recovery
when the server restarts the application to the service, avoiding new server traffic due to sudden shocks cause a system failure is very important. Therefore, when a new server is introduced into the server farm, the flow distribution will be gradually increased to the server, until it reaches its full processing capabilities. In order to ensure that users not only when the server is out of service, but also to ensure the server during start-up and at the start of the application, you can get uninterrupted service.