The IESG has approved the following document: - 'Shared Brotli Compressed Data Format' (draft-vandevenne-shared-brotli-format-14.txt) as Informational RFC
This document has been reviewed in the IETF but is not the product of an IETF Working Group. The IESG contact person is Francesca Palombini. A URL of this Internet-Draft is: https://datatracker.ietf.org/doc/draft-vandevenne-shared-brotli-format/ Technical Summary This specification defines a data format for shared brotli compression, which adds support for shared dictionaries, large window and a container format to brotli [RFC7932]. Shared dictionaries and large window support allow significant compression gains compared to regular brotli. Working Group Summary The document is a stand-alone addition to add dictionary support to brotli (RFC 7932) which was also published as AD sponsored. The use of the format documented in the draft was discussed in the HTTPBIS working group as part of the work on draft-ietf-httpbis-compression-dictionary but the shared brotli document itself was not a discussion point. The document describes a stream format that has been in use by brotli for several years and it was adopted by compression dictionaries as-is (with a prefix header defined in the compression dictionaries draft got the `dcb` encoding). Document Quality The stream/file format has been implemented in the open-source brotli library: https://github.com/google/brotli The document has undergone 4 weeks IETF Last Call following the process for AD sponsored documents. As a result of that LC, two reviews were provided by people with expertise on compression (Yann Collet, creator of LZ4 and zstd, and Felix Handte, on the compression team at Meta), in addition to the usual directorate and shepherd reviews. Given the specificity of the document, this was considered sufficient by the responsible AD. Personnel The Document Shepherd for this document is Patrick Meenan. The Responsible Area Director is Francesca Palombini. _______________________________________________ IETF-Announce mailing list -- [email protected] To unsubscribe send an email to [email protected]
