Yoav Gressel

Eric Klein




As the amount of online video increases, ISPs face a challenge—the burdening of their networks with a growing amount of Internet-sourced traffic such as online video. But what if the ISP could pull video content from local cache? In this working group, participating members focus on helping ISPs solve this traffic problem by establishing the underlying technical and functional requirements for implementing an in-network, open caching system.

To create the functional and technical requirements for open caching systems inside ISP networks



The Streaming Video Alliance Open Caching Working Group has two objectives. First, to identify the critical components of a non-proprietary caching system; and second, to establish basic architectural guidelines for implementation of an open caching system.

Open Cache System Functional Requirements

Problem statement and functional requirements of an open caching solution deployed by service providers to be used by content providers and content delivery networks.

Open Cache Solution Functional Requirements (1626 downloads)


Open Cache Request Routing Technical Specification

High-level functional specification of open caching request routing and the required interfaces to enable request routing to be performed from an upstream CDN to an open cache system.

Open Cache Request Routing Specification (1224 downloads)


Open Cache Logging Requirements Specification

This includes the Open Caching System (OCS) technical specifications for logging data to help track data acquisition and the delivery of it to the end user.

Open Caching Logging Requirements Specification (318 downloads)


Open Cache Request Routing Service Provisioning Specification

This includes the functional specification of open-caching service provisioning  interfaces enabling a CDN and an SP to exchange information to enable the delegation of CDN content requests to the SP Open Caching system.

Open Caching Request Routing Service Provisioning Specification (452 downloads)


The following are companies involved in the Open Caching Working Group.

Join Today!

The Open Caching Working Group welcomes any company with a vested interest in building a next generation streaming delivery architecture. Get involved today to contribute your voice to the discussion!