Caching method and device and storage medium

Abstract

The embodiment of the invention relates to the field of computers, and discloses a caching method and equipment and a storage medium. The caching method comprises the following steps: determining theflow of data sent by a client within a first time length; determining the service level of the disk according to the disk utilization rate and the flow of the data, the service level comprising a first service level and a second service level, the first service level being to write the data into the cache region, and the second service level being to discard the data; and determining to cache or discard the data according to the service level. The service level of the disk is determined through the disk utilization rate and the data flow, and the data is cached or discarded according to the determined service level, so that the situation that the data cannot be processed when the data volume is suddenly increased in a short time is avoided, a guarantee is provided for the continuous availability of the server node, and the stability of the network is further improved.

Description

technical field [0001] The embodiments of the present invention relate to the field of computers, and in particular to a caching method, device, and storage medium. Background technique [0002] In the computer field, a content delivery network (Content Delivery Network, CDN) is a computer system connected to each other through the Internet. The system provides music, pictures, videos, applications, and Programs and other forms of data can ensure that the user can receive the requested data faster and more reliably, thereby improving network performance, increasing scalability and reducing costs. CDN can set server nodes in multiple locations, or , setting up multiple server nodes in multiple different networks. [0003] The inventor found that there are at least the following problems in the prior art: when a user accesses a server node through a client, if the server node has a cache area, the data required by the user can be taken out from the corresponding cache area an...

AI Technical Summary

Problems solved by technology

[0003] The inventor found that there are at least the following problems in the prior art: when a user accesses a server node through a client, if the server node has a cache area, the data required by the user can be taken out from the corresponding cache area and directly sent to the user The corresponding client; if the server node does not have a cache area, it needs to return to the upper server node to obtain the data required by the user and feed it back to the corresponding client of the user

However, when the data volume of the server node suddenly increases, the input / output data volume of the disk of the server node will suddenly increase. If the increased data volume is greater than the processing threshold of the server node, the server node will be unavailable , so that the user cannot obtain the requested data, which reduces the user experience. If this situation occurs on multiple server nodes at the same time, it will cause the network to be paralyzed and affect the user's use.

Images