Content delivery network using differential caching
US7185063B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 22, 2001 |
| Grant date | Feb 27, 2007 |
| Priority date | — |
| Expiry date | Dec 29, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L67/288
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The invention provides a technique for serving relatively non-static content in a CDN (content delivery network). Content is pushed out from an originating server to a set of mirroring servers using differential caching. Each requestable object is separated into template and delta information. The originating server determines templates for differential caching, and causes those templates to be distributed using the CDN. Each mirroring server in the CDN is able to access a copy of a recent template for each request. Hosting of the template information is decoupled from hosting of the delta information. Delta information can include (a) changes to the template information since last distributed, or (b) personalized information specific to the client or to the request. Delta information can be served separately from the originating server, or can be served separately from mirroring servers using a CDN (possibly the same CDN as used to serve template information).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.