Temporary jump error correction method and system based on content distribution network fringe node

Abstract

The invention discloses a temporary jump error correction method and system based on a content distribution network fringe node. The situation that a user obtains real-time website information is ensured by intelligent error correction, and the problem of temporary jump of user agent cache is solved by controlling the user agent cache. The technical scheme is that the method comprises the steps of initializing a detecting cycle by a content delivery network (CDN) node; selecting a uniform resource locator (URL) from a temporary jump queue by the CDN node; transmitting a detecting request to the URL by the CDN node, if detecting successfully, deleting a cache target file corresponding to the URL, and storing normal response for the requests of subsequent users; and deleting the processed URL from the temporary jump queue, if detecting unsuccessfully, updating a cache time value of the temporary jump, dynamically changing the detecting cycle according to the detecting result, and providing the current URL at the position corresponding to the temporary jump queue according to the priority level.

Description

technical field [0001] The invention relates to intelligent error correction technology, in particular to an intelligent error correction method and system for temporary jumping of content distribution network edge nodes. Background technique [0002] There is such a need in reality. Many CDN (Content Delivery Network) customers often make temporary redirects to HTTP error responses (such as 404 or 500, etc.) in order to improve service quality. [0003] Currently, CDN adopts the normal response caching time policy for such temporary jumps. This time policy includes two parts: if the response carries a cache control header, it will determine whether the response is cached according to the value of the header; if caching is required, give Cache out time; if the response does not carry a cache control header, then it is determined whether the response is cached or not based on the Last Modified header, the Response Generation Time header, and related configuration thresholds, ...

AI Technical Summary

Problems solved by technology

[0006] The CDN node uses the normal response cache time policy for the temporary jump, which cannot guarantee the correctness of the decision, which will cause the CDN node to fail to serve normally. At the same time, the guessing of the cache time also violates the semantics of the HTTP protocol. transparency requirements

[0007] Unable to solve the situation where some user agent caches temporarily jump

User agent terminals generally cache temporary responses, which will seriously affect the real-time performance of information responses, especially for e-commerce websites and other websites that require high real-time performance.

Images