haproxy -vv and uname -aFuture version
Haproxy could add a additional compression algorithm.
Compression algorithms supported : identity("identity"), deflate("deflate"), raw-deflate("deflate"), gzip("gzip")
https://github.com/google/zopfli
ZopfliDeflate creates a valid deflate stream in memory, see:
http://www.ietf.org/rfc/rfc1951.txt
ZopfliZlibCompress creates a valid zlib stream in memory, see:
http://www.ietf.org/rfc/rfc1950.txt
ZopfliGzipCompress creates a valid gzip stream in memory, see:
http://www.ietf.org/rfc/rfc1952.txt
In my opinion, Zopfli is not designed to be used for in-line compression but for off-line compression instead. It provides marginal gains over gzip/deflate (5-10% typically) at the expense of extreme compression time (50-100 times longer). This is well suited for recompressing often used images but not for being deployed to compress random objects flowing through a load balancer.
Thanks for clarification
Most helpful comment
In my opinion, Zopfli is not designed to be used for in-line compression but for off-line compression instead. It provides marginal gains over gzip/deflate (5-10% typically) at the expense of extreme compression time (50-100 times longer). This is well suited for recompressing often used images but not for being deployed to compress random objects flowing through a load balancer.