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Ratification Phase 1 (Comment Window)
The project output is being reviewed by the membership and is open for comments. If the members approve the document to move on, the working group will review the comments. If the document can be edited without significantly altering the content, it will move onto Phase 2. If the comments result in substantial edits, the document must go through Phase 1 again.
(DRAFT) SVTA2028-1: Open Caching Configuration Interface Part 1: Overview and Architecture Version 2.0
This is the first part in a set of documents that document the Streaming Video Technology Alliance (SVTA) Configuration Interface, defining both the metadata model and APIs for entities to interchange the model. The document specifies the motivational drivers, use cases, and standards to facilitate interoperability within the content delivery network (CDN) and Open Caching ecosystems. The full document set presents a layered architecture that extends the Internet Engineering Task Force (IETF) CDN Interconnect (CDNI) metadata and capabilities models and adds publishing Application Programming Interfaces (APIs) to provide configuration management capabilities required by the CDN and open caching industries.
(DRAFT) SVTA2029-1: Open Caching Configuration Interface Part 2: CDNI Metadata Model Extensions Version 2.0
The IETF Content Delivery Networks Interconnection (CDNI) Metadata interface enables interconnected Content Delivery Networks (CDNs) to exchange content distribution metadata in order to enable content acquisition and delivery. This document and its sub-parts describe extensions to the CDNI Metadata Object Model as documented in “CDNI Metadata” [RFC8006] to address the complex requirements of the commercial CDN industry and to support a wider set of use cases such as Open Caching.
(DRAFT) SVTA2030-1: Open Caching Configuration Interface Part 3: Simple Configuration Metadata API Version 2.0
This is part 3 in a set of documents that specify the Streaming Video Alliance (SVTA) Configuration Interface. This document presents the Simple Configuration Metadata API, which provides simple metadata retrieval and publishing capabilities as introduced in part 1 of the SVTA Configuration Interface document set.
(DRAFT) SVTA2031: Open Caching Configuration Interface Part 2a: Metadata Expression Language (MEL) Version 2.0
This document specifies the syntax and usage examples for an expression language to be used within SVTA/CDNI Metadata Interface (MI) objects. The purpose of this expression language is to enable metadata to be applied conditionally (based on aspects of an HTTP request), and to enable HTTP responses to be generated or altered dynamically.
(DRAFT) SVTA2032: Open Caching Configuration Interface Part 2b: Processing Stages Metadata Version 2.0
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.
(DRAFT) SVTA2033: Open Caching Configuration Interface Part 2c: Cache Control Metadata Version 2.0
This specification adds to the basic Cache Control metadata defined in [RFC8006], providing Content Providers and uCDNs more fine-grained control over dCDN caching. Use cases include overriding or adjusting cache-control headers from the origin, bypassing caching altogether, or altering cache keys with dynamically generated values.
(DRAFT) SVTA2034: Open Caching Configuration Interface Part 2d: Source Access Control Metadata Version 2.0
This specification provides an alternative to the SourceMetadata objects defined in [RFC8006], providing greatly extended capabilities with regards to defining multiple sources, load balancing and failover rules across those sources, and a mechanism for a CDN to monitor source health and pull unhealthy sources out of rotation. Additionally, new methods are defined for authentication access to an upstream source/origin.
(DRAFT) SVTA2035: Open Caching Configuration Interface Part 2e: Client Access Control Metadata Version 2.0
This specification adds to the basic client access control metadata in [RFC8006], providing Content Providers and uCDNs extended capabilities in defining location and time window restrictions. Support is also provided to define required TLS certificates and encryption levels, as well as configuration metadata for the Common Media Access Token (CAT), developed jointly by the SVTA and CTA-WAVE.
(DRAFT) SVTA2036: Open Caching Configuration Interface Part 2f: Edge Control Metadata Version 2.0
This specification defines configuration metadata objects related to controlling edge access to resources via CDNs and Open Caching systems. Configuring Cross-Origin Resource Sharing (CORS) access rules and the dynamic generation of CORS headers is a key feature of typical configurations, as are the ability to define response body compression rules, client connection timeouts, and traffic type hints for optimized caching.
(DRAFT) SVTA2038: Open Caching Configuration Interface Part 2h: Private Features Metadata Version 2.0
This specification defines a mechanism for dCDNs to define private extensions to the metadata model that are mutually agreed upon with uCDNs and Content Providers.
(DRAFT) SVTA2040: Open Caching Configuration Interface Part 4: Service Configuration Model Version 2.0
This specification introduces the Service Configuration Model, an object layer that wraps the Host Match metadata defined in [RFC8006] with a construct defining CDN Properties (groups of hosts with shared metadata definitions) and reusable metadata definitions that can be used across all of a service’s CDN Properties. The Service Configuration represents a self-contained bundle of configuration metadata and definitions that can be published and deployed as an atomic unit with no external references. This model is defined independently of any API, and will be used as the basis for the SVTA Orchestration API and Terraform Integration.
(DRAFT) SVTA2052: Open Caching Configuration Interface: Document Manifest Version 2.0
The SVTA Configuration Interface is a multi-part set of documents defining both the metadata model and Application Programming Interfaces (APIs) for entities to publish and retrieve configuration metadata for content caching and delivery.
This manifest specifies the SVTA document numbers and versions of each of the parts and subparts comprising a version of the Configuration Interface. Each individual document in the set is assigned a unique SVTA document number and is versioned independently. OpenAPI definitions as well as communications of compliance with this standard may make references such as Configuration Interface Version 2.0 or Configuration Interface Version 2.1. Those versions of this document manifest can be referenced to determine the SVTA document numbers and versions of the parts and subparts that comprise any given version of the Configuration Interface standard.
Goals and Objectives
- To define an API specification that provides for the deployment and management of cache configurations across multiple CDN providers and Open Caching Nodes.
- A list of supported cache configuration features
- Description of a programmatic method by which to deploy configurations to different caching systems
- Programmatic methods for error detection and error correction in configuration deployment
- A data structure and recommended container for configuration representation
- Any specific programming languages that should be used to extract metrics
- Any support for configuration features not specifically listed and addressed by methods within the API
The following members have contributed to this project. Click on their name to visit their profile. If they have not published their profile, the link will redirect to their LinkedIn profile.
- Configuration Interface and CAT Discussion
- Open Caching Working Group Configuration Interface Part 2i Secrets Metadata
- Open Caching Working Group Configuration Interface General Update
- Open Caching Working Group OC WG Configuration Interface Part 2f Edge Control Metadata
- Open Caching Working Group Configuration Interface Breakout Session
- Open Caching Working Group Configuration Interface Update