Sugestion

[AlyxSharkBite]

readonly property on the BaseCompressor to return compression method. ie DeflateCompressor returns "deflate"

(or returns an enum like CompressionMethod.Deflate)
This would make it easy to track/log what compression method was used,

User story:
As a user I want to store a log with a compressed Json object. I need to track what compression method was used, so I can decompress it correctly if we change the compression used in the project later.

I have an object like so to track it
long Id (Primary Key)
int UserId
string UserName
DateTimeOffset TimeStamp
string CompressionMethod
byte[] CompressedData

[mjebrahimi]

LGTM👍
Can you submit a PR for this one?