Method and system for controlling instant congestion of server

Abstract

The invention provides a method and a system for controlling the instant congestion of a server. In the method, controlling state comprises a first state, a second state and a third state, in each state, a data packet is processed by different methods under different conditions. The method comprises the following steps of: 1) receiving a data packet, then discarding or forwarding the data packet according to the controlling state; and 2) comparing the average request return time delay of the data packet with a detection threshold value, then changing controlling state or keeping an original state according to a comparison result, when the average request return time delay is greater than the detection threshold value, switching from the first state to the second state, or switching from the second state to the third state, and when congestion condition is improved, switching from the third state to the first state. By the method and the system, session integrity can be protected, the retransmission of massive data packets caused by the oscillation of server load can be avoided, and learning or training is not required and computation cost is low.

Description

technical field [0001] The invention relates to the field of network security detection and control, and more specifically, relates to the control of flash crowd of servers. Background technique [0002] Web server is an important part of the Internet, and the overload control of the server has always been a concern of many websites. Instantaneous congestion refers to the phenomenon that a large number of users access the server at the same time, resulting in access requests exceeding the processing capacity of the server, the requests submitted by users cannot be successfully completed, and the performance of the server is greatly reduced or even crashed. Instantaneous congestion is often accompanied by natural disasters (such as earthquakes) or emergencies (such as terrorist attacks), and the occurrence time cannot be accurately predicted. On the other hand, instantaneous congestion has the characteristics of large burst traffic. When it occurs, the amount of access reque...

AI Technical Summary

Problems solved by technology

The disadvantage of this type of method is that it takes a long time to study resource consumption, and the prediction is usually not accurate enough. At the same time, it needs to be deployed inside the server, which greatly consumes the computing power of the server when it is overloaded, and further increases the processing burden of the server.

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