[0cf8612b2e1e]

Legacy is a bit much. Deflate is probably the only supported compression format in many existing/live standards. For a greenfield project where you can control all clients, sure, use whatever, but zlib is likely going to continue to be used for decades.

[daveguy]

EDIT: doh! Mixed up Zstd and Zlib. Nothing to see here. (Can't delete with a reply.)

[dralley]

I think you've confused Zstd (which they were not discussing) for Zlib (the primary implementation of DEFLATE, which is most commonly used by Gzip)

Gzip/DEFLATE is mediocre on most metrics relevant to compression but it's widely used of course. Zstd is better all-around, but much newer and thus doesn't have the same level of adoption.