Scanning and Resolving Problems in Server Load Balancing

Server load balancing is a large part of load balancing applications. Software and hardware are involved in many aspects of server load balancing. So, let's talk about the issues related to server load balancing. I hope everyone can get help.

Server Load Balancing Solution

1. Problem Analysis

Information Service Efficiency? speed? reliability? Continuity for the production of a business? Sales? Propaganda and so on have played an immeasurable role?

With the continuous development of enterprises, the number of accesses faced by web servers has increased greatly and is more unpredictable? Today, server systems must have the ability to provide a large number of concurrent access services. Their processing power and I/O capabilities have become bottlenecks in providing services. If the increase in customers leads to traffic beyond the reach of the server, the result must be 宕machine?

Obviously, the limited performance of a single server is unlikely to solve this problem, so connecting multiple servers over the network is efficient. The same service with the same security provider becomes the only solution to the problem of server system load?

1) Question 1:

If you connect multiple servers through a network switch and provide the same service, you will encounter the following problems:

Accepted by the server The network request is unbalanced, that is, the load on the server is not balanced. There may be some servers with high load, while others have low load, so although there are remaining server resources, user access is still slow;

If there are servers in the server farm that are down due to a failure, but there will still be requests to the server, so although the other servers are still healthy, user access will be interrupted?

2) Question 2:

If there are multiple applications running on different servers, you will encounter the following problems:

When using server utilization for a certain service High, while other servers have very low server load, so although there are still server resources left, users still have slow access to the service;

If there is some service in the server group The server crashed due to a failure. Although other servers are still healthy, users' access to the service will be interrupted.

2. Solution

1) Solution 1:

Connect multiple servers through a load-balanced switch to provide the same services, which can achieve the following functions: Br>

Server load balancing enables multiple servers to run the same application at the same time, and all servers load the same, improving the overall performance of the service;

Server load balancing can check the health of the server If there is a server failure, the request is not forwarded to the server to ensure the availability of the service;

Can the server load balancing be upgraded online? Replace and add servers to improve service maintainability and scalability;

Server load balancing can be achieved through anti-DOS attacks? Packet filtering and other methods to improve the security of the service;

2) Solution 2:

Connect multiple servers through the load balancing switch to provide a variety of services to achieve the following functions :

Server load balancing enables multiple servers to run multiple applications simultaneously, and all servers have the same load conditions, improving the performance of all services;

Server load balancing can be done by checking the server Health status, if there is a server failure, the request is not forwarded to the server, thus ensuring the availability of all services;

Server load balancing can be upgraded online? Replace and add servers to improve service maintainability and scalability;

Server load balancing can be achieved through anti-DOS attacks? Packet filtering and other methods to improve service security;

3) Solution 3:

Connect multiple servers through two load balancing switches to provide multiple services. The following functions:

For users with high system security requirements, configuring two load balancing switches can completely eliminate the single point of failure, thus ensuring the security and availability of the entire system;

Server load balancing enables multiple servers to run multiple applications simultaneously, and all servers have the same load conditions, improving the performance of all services.

Server load balancing can check the health of the server, if there is a server In the event of a failure, the request is not forwarded to the server, thus ensuring the availability of all services;

Can server load balancing be upgraded online? Replace and add servers to improve service maintainability and scalability;

Server load balancing can be achieved through anti-DOS attacks? Packet filtering and other methods improve the security of the service.