System and method of optimizing retrieval of network resources by identifying and substituting embedded symbolic host name references with network addresses in accordance with substitution policies
US7082476B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 24, 2000 |
| Grant date | Jul 25, 2006 |
| Priority date | — |
| Expiry date | May 24, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L67/1001
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and apparatus are provided for optimizing retrieval of network resources. In one embodiment, a method of optimizing access to a network resource is implemented in a computer program executed by a router, cache server, or proxy server. A network resource that contains one or more embedded symbolic host name references is received. A network address corresponding to each of the embedded symbolic host name references is determined. A modified copy of the network resource is created and stored; in the modified copy, a network address is substituted for each corresponding embedded symbolic host name reference. Thereafter, the modified copy of the network resource in responding to all subsequent client requests for the network resource, thereby greatly reducing the required number of network address lookup operations. In one specific embodiment, IP addresses are determined using DNS queries for the hostname portion of all URLs that are embedded in a Web page using image, applet, object, or embed tags. The IP addresses are stored in place of the hostname portions in a modified copy of the Web page, typically in a cache. As a result, when the modified page is subsequently served t…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.