HTTP Framework for Time-Based Access to Resource States -- Memento, December 2013
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- H. Van de Sompel
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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.
For the definition of Status, see RFC 2026.
For the definition of Stream, see RFC 4844.