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WARC announced as ISO standard file format for website preservation

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ISO 28500:2009 specifies the WARC file format: * to store both the payload content and control information from mainstream Internet application layer protocols, such as the Hypertext Transfer Protocol (HTTP), Domain Name System (DNS), and File Transfer Protocol (FTP); * to store arbitrary metadata linked to other stored data (e.g. subject classifier, discovered language, encoding); * to support data compression and maintain data record integrity; * to store all control information from the harvesting protocol (e.g. request headers), not just response information; * to store the results of data transformations linked to other stored data; * to store a duplicate detection event linked to other stored data (to reduce storage in the presence of identical or substantially similar resources); * to be extended without disruption to existing functionality; * to support handling of overly long records by truncation or segmentation, where desired. See the ISO listing.

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