System and method for selectively caching hot content in a content distribution network
First Claim
1. A system, comprising:
- a memory that stores instructions;
a processor that executes the instructions to perform operations, the operations comprising;
determining a first elapsed time since a first previous request for content based on a table indexed by a content identifier that identifies the content;
determining, in response to a request for the content, if the content is in a cache and if the first elapsed time since the first previous request for the content is less than a first threshold;
if the content is determined to not be in the cache, the first elapsed time is greater than or equal to the first threshold, and a second elapsed time since a second previous request for the content is less than a second threshold;
storing the content in the cache; and
providing the content in response to the request; and
if the content is determined to not be in the cache and the second elapsed time since the second previous request for the content is greater than the second threshold;
retrieving the content without caching the content.
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Abstract
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.
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Citations
20 Claims
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1. A system, comprising:
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a memory that stores instructions; a processor that executes the instructions to perform operations, the operations comprising; determining a first elapsed time since a first previous request for content based on a table indexed by a content identifier that identifies the content; determining, in response to a request for the content, if the content is in a cache and if the first elapsed time since the first previous request for the content is less than a first threshold; if the content is determined to not be in the cache, the first elapsed time is greater than or equal to the first threshold, and a second elapsed time since a second previous request for the content is less than a second threshold; storing the content in the cache; and providing the content in response to the request; and if the content is determined to not be in the cache and the second elapsed time since the second previous request for the content is greater than the second threshold; retrieving the content without caching the content. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method, comprising:
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determining a first elapsed time since a first previous request for content based on a table indexed by a content identifier that identifies the content; determining, in response to a request for the content, if the content is in a cache and if the first elapsed time since the first previous request for the content is less than a first threshold, wherein the determining is performed by utilizing instructions from a memory that are executed by a processor; if the content is determined to not be in the cache, the first elapsed time is greater than or equal to the first threshold, and a second elapsed time since a second previous request for the content is less than a second threshold; storing the content in the cache; and providing the content in response to the request; and if the content is determined to not be in the cache and the second elapsed time since the second previous request for the content is greater than the second threshold; retrieving the content without caching the content. - View Dependent Claims (15, 16, 17, 18, 19)
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20. A computer-readable device comprising instructions, which when loaded and executed by a processor, cause the processor to perform operations comprising:
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determining a first elapsed time since a first previous request for content based on a table indexed by a content identifier that identifies the content; determining, in response to a request for the content, if the content is in a cache and if the first elapsed time since the first previous request for the content is less than a first threshold; if the content is determined to not be in the cache, the first elapsed time is greater than or equal to the first threshold, and a second elapsed time since a second previous request for the content is less than a second threshold; storing the content in the cache; and providing the content in response to the request; and if the content is determined to not be in the cache and the second elapsed time since the second previous request for the content is greater than the second threshold; retrieving the content without caching the content.
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Specification