How to Enable GZIP Compression in Oxygen Feedback

1. [Prerequisite] You need to have Nginx installed and configured as a reverse proxy.
2. Configure Nginx to enable GZIP compression.
   Sample configuration for Nginx to enable GZIP compression:

   server {
       ......             
       gzip on;
       gzip_types text/css text/javascript application/javascript text/xml text/plain application/json application/xml;
       gzip_proxied no-cache no-store private expired auth;
       gzip_min_length 1024;
       gzip_vary on;
       gzip_comp_level 5;
   }           

   For more information, see: https://docs.nginx.com/nginx/admin-guide/web-server/compression/.

3. Restart Nginx.

To change the compression settings, open the config/feedback-server.properties file and edit the following properties:

# Enable response compression
server.compression.enabled=true

# The comma-separated list of mime types that should be compressed
server.compression.mime-types=text/html,text/xml,text/plain,text/css,text/javascript,application/javascript,application/json,application/xml

# Compress the response only if the response size is at least 1KB
server.compression.min-response-size=1024

The above configuration enables the gzip compression for all responses for the enumerated mime-types. The wildcard in mime-types are not supported. You should explicitly provide the list of all mime-types.