Application-Layer Traffic Optimization Cost Calendar
RFC 8896, “Application-Layer Traffic Optimization Cost Calendar”, is a Proposed Standard document published in November 2020 by S. Randriamasy, R. Yang, Q. Wu, L. Deng, N. Schwan. The canonical text is published by the RFC Editor.
Abstract
This document is an extension to the base Application-Layer Traffic Optimization (ALTO) protocol. It extends the ALTO cost information service so that applications decide not only 'where' to connect but also 'when'. This is useful for applications that need to perform bulk data transfer and would like to schedule these transfers during an off-peak hour, for example. This extension introduces the ALTO Cost Calendar with which an ALTO Server exposes ALTO cost values in JSON arrays where each value corresponds to a given time interval. The time intervals, as well as other Calendar attributes, are specified in the Information Resources Directory and ALTO Server responses.
What “Proposed Standard” means
An entry-level standards-track specification: stable, peer-reviewed and a solid basis for implementation, though it may still evolve before becoming an Internet Standard.
The canonical text of RFC 8896 is hosted at rfc-editor.org. Available in HTML,TXT,PDF,XML.
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- RFC 8893 Resource Public Key Infrastructure Origin Validation for BGP Export
- RFC 8899 Packetization Layer Path MTU Discovery for Datagram Transports
- RFC 8892 Guidelines and Registration Procedures for Interface Types and Tunnel Types
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