News for hackers. Stuff that matters.

A comment on New standards for a faster and more private Internet. Parent comment

Re:New standards for a faster and more private Internet by terrelln on Thursday September 26, 2024 @09:17PM (#41665337)
Meta drove the Zstandard content encoding, but Google drove the adoption of Zstandard in Chrome.

The faster Brotli levels could probably be made to match Zstandard’s compression speed. But we’ve invested a lot in optimizing these levels, so it would likely take significant investment to match. Google is also contributing to improving the speed of Zstandard compression.

A cheaper conversion from Zstandard to Brotli is possible, but I wouldn’t really expect an improvement to compressed size. The encoding scheme impacts how efficient a LZ coding is, so for Brotli to beat Zstandard, it would likely want a different LZ than Zstandard uses. The same applies for a conversion from Brotli to Zstandard.

[ Parent | on HN ]
Re:New standards for a faster and more private Internet by lifthrasiir on Thursday September 26, 2024 @09:48PM (#41665484)
The conversion is meant to avoid the expensive backreference optimization when it has been already done once by Zstandard, because you can't prepend a Zstandard bitstream with a Brotli bitstream without turning one to another. But well, I think such hybrid scheme is hard to make when the latency is at stake.
[ Parent | on HN ]