Description:
A new message compressor was added and should be documented.
Engineering Ticket Description:
from this I learn that zlib has been added as an option for --networkMessageCompressors. zstd uses much less CPU while matching zlib in compression rates. I hope you add it. Not only does this reduce server CPU but it also reduces latency in query responses. Using a DBMS not named MongoDB, switching from zlib to zstd for network compression was a huge win.
https://docs.mongodb.com/master/release-notes/3.6/
https://github.com/facebook/zstd