System and method for selectively caching hot content in a content distribution network

摘要

A method includes altering a request interval threshold when a cache-hit ratio falling below a target, receiving a request for content, providing the content when the content is in the cache, when the content is not in the cache and the time since a previous request for the content is less than the request interval threshold, retrieving and storing the content, and providing the content to the client, when the elapsed time is greater than the request interval threshold, and when another elapsed time since another previous request for the content is less than another request interval threshold, retrieving and storing the content, and providing the content to the client, and when the other elapsed time is greater than the other request interval threshold, rerouting the request to the content server without caching the content.

主权项

1. A system, comprising:
a memory that stores instructions; a processor that executes the instructions to perform operations, the operations comprising:
determining, in response to a request for content from a client, if the content is in a cache and if a first elapsed time since a first previous request for the content is less than a first threshold;storing the first elapsed time in a table indexed by a content identifier;if the content is determined to not be in the cache and if the first elapsed time is less than the first threshold:
retrieving the content;storing the content in the cache; andproviding the content to the client;determining a second threshold based on the content requested and based on the cache; andif the content is determined to not be in the cache and a second elapsed time since a second previous request for the content is greater than the second threshold:
obtaining the content for the client without caching the content.