Document Name: RFC 7089
Document URI: urn:ietf:rfc:7089
Online Version:
Organization: Internet Engineering Task Force (IETF)
Series: Request for Comments (RFC)
Abstract: The HTTP-based Memento framework bridges the present and past Web. It facilitates obtaining representations of prior states of a given resource by introducing datetime negotiation and TimeMaps. Datetime negotiation is a variation on content negotiation that leverages the given resource's URI and a user agent's preferred datetime. TimeMaps are lists that enumerate URIs of resources that encapsulate prior states of the given resource. The framework also facilitates recognizing a resource that encapsulates a frozen prior state of another resource.

Specified Web Concepts:

HTTP Header Fields

Accept-Datetime , Memento-Datetime

memento , original , timegate , timemap

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