(DRAFT) SVTA2032: Open Caching Configuration Interface Part 2b: Processing Stages Metadata Version 2.0
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Estimated Publication Date
Q3 2023
Document Description
This document specifies a set of objects extending the CDNI Metadata Model [RFC8006] to allow for metadata to be applied conditionally beyond the simple host and path matching defined in [RFC8006]. The concept of processing stages are introduced, where each stage in a CDNs processing pipeline presents an opportunity to examine requests and responses and make alterations as needed. Metadata such as caching rules can be applied conditionally (based on aspects of an HTTP request header), and HTTP responses from a source can be altered dynamically (such as adding or dropping an HTTP header). This standard leverages the expression language documented in the Metadata Expression Language (MEL) Specification.
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