two ways to use brotli compression in Apache

10-mod_deflate_proxy.conf

# Quick hints for using brotli compression in Apache, available since 2.4.26
# 
# method one is for inline proxies with AddOutputFilterByType.
# method two is for static local files with FilesMatch/SetOutputFilter
#
# ptudor 2019

#############################
# /etc/httpd/conf.d/10-mod_deflate_proxy.conf
<If "%{HTTP:Accept-Encoding} =~ /br/">
  <IfModule mod_brotli.c>
    AddOutputFilterByType BROTLI_COMPRESS text/css application/javascript text/javascript text/html text/plain text/xml text/csv application/json
  </IfModule>
</If>
<ElseIf "%{HTTP:Accept-Encoding} =~ /gzip/">
  <IfModule mod_deflate.c>
    AddOutputFilterByType DEFLATE text/css application/javascript text/javascript text/html text/plain text/xml text/csv application/json
  </IfModule>
</ElseIf>

11-mod_deflate_static.conf

# Quick hints for using brotli compression in Apache, available since 2.4.26
# 
# method one is for inline proxies with AddOutputFilterByType
# method two is for static local files with FilesMatch/SetOutputFilter
# ptudor 2019

#############################
# /etc/httpd/conf.d/11-mod_deflate_static.conf
<FilesMatch "\.(js|html|htm|css|csv|json|xml)$">
  <If "%{HTTP:Accept-Encoding} =~ /br/">
    <IfModule mod_brotli.c>
      SetOutputFilter BROTLI_COMPRESS
    </IfModule>
  </If>
  <ElseIf "%{HTTP:Accept-Encoding} =~ /gzip/">
    <IfModule mod_deflate.c>
      SetOutputFilter DEFLATE
    </IfModule>
  </ElseIf>
</FilesMatch>