Invention Grant
US08868834B2 Efficient cache validation and content retrieval in a content delivery network
有权
内容传送网络中高效的缓存验证和内容检索
- Patent Title: Efficient cache validation and content retrieval in a content delivery network
- Patent Title (中): 内容传送网络中高效的缓存验证和内容检索
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Application No.: US13632983Application Date: 2012-10-01
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Publication No.: US08868834B2Publication Date: 2014-10-21
- Inventor: Andrew Lientz
- Applicant: Edgecast Networks, Inc.
- Applicant Address: US CA Santa Monica
- Assignee: Edgecast Networks, Inc.
- Current Assignee: Edgecast Networks, Inc.
- Current Assignee Address: US CA Santa Monica
- Main IPC: G06F12/16
- IPC: G06F12/16 ; G06F15/167 ; G06F15/173 ; H04L29/08 ; G06F12/08 ; G06F17/30 ; G06F11/14
Abstract:
Some embodiments provide systems and methods for validating cached content based on changes in the content instead of an expiration interval. One method involves caching content and a first checksum in response to a first request for that content. The caching produces a cached instance of the content representative of a form of the content at the time of caching. The first checksum identifies the cached instance. In response to receiving a second request for the content, the method submits a request for a second checksum representing a current instance of the content and a request for the current instance. Upon receiving the second checksum, the method serves the cached instance of the content when the first checksum matches the second checksum and serves the current instance of the content upon completion of the transfer of the current instance when the first checksum does not match the second checksum.
Public/Granted literature
- US20140095804A1 Efficient Cache Validation and Content Retrieval in a Content Delivery Network Public/Granted day:2014-04-03
Information query
