OpenResty Usage Guide

Recently, I needed to modify the GZIP configuration for a web service. After checking the network, I noticed the response header showed server:openresty/1.21.4.1, which revealed that the gateway was using OpenResty. After confirming with the backend team, I needed to modify the GZIP configuration, which required some understanding of OpenResty.

What is OpenResty

OpenResty is a web server based on nginx that integrates nginx’s powerful performance with Lua’s dynamic capabilities.

Modifying GZIP Configuration in OpenResty

OpenResty’s GZIP configuration is similar to nginx’s configuration, primarily using the gzip directive.

nginx configuration path: /usr/local/openresty/nginx/conf/nginx.conf

gzip on;
gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript;
gzip_min_length 256;

Testing Configuration

In practice, you should first test if the configuration is correct before restarting.

openresty -t

Restarting OpenResty

openresty -s reload

Checking OpenResty Version

openresty -v

Final Thoughts

1. So far, I’ve only worked with OpenResty’s GZIP configuration. I’ll add more when I encounter other configurations.
2. As of now, I still prefer Caddy’s configuration approach - it’s more straightforward and clear.

Related Documentation

• https://github.com/openresty/openresty
• https://openresty.org/en/installation.html