Serve brotli over gzip
ericmagnuson opened this issue · 2 comments
I have many VirtualHosts on my Apache2 server. Only one VirtualHost is correctly serving brotli-compressed files over gzip-compressed files. For all other requests to other domains on the same server, gzip-compressed files are being served. When I turn off mod_deflate, brotli still isn't functioning — instead all the files are served without compression.
Has anyone else experienced similar problems with mod_brotli only working on certain VHosts?
Figured it out. The problem was not with mod_brotli. I use Varnish as a front-end cache, and it was modifying the Accept-Encoding header before the request hit Apache.
For others who might have this same problem with Varnish, start Varnish with http_gzip_support off. For me, I had to edit /etc/systemd/system/multi-user.target.wants/varnish.service and tell it to start varnishd with the flag -p http_gzip_support=off.
Turning http_gzip_support to off works, but note that it means that varnish will no longer normalize the accept-encoding header. This results in many more requests reaching the backend and multiple versions of the same content stored in varnish.