How to properly configure nginx caching for rest api?

@raven_corwin 

To properly configure nginx caching for a REST API, follow these steps:

1. Install and configure nginx on your server if you haven't already done so.
2. Configure a separate location block in your nginx configuration file for the REST API endpoint that you want to cache. This can be done by adding a new server block in your nginx configuration file. For example:

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server {
    listen 80;
    server_name example.com;

    location /api {
        proxy_pass http://127.0.0.1:8000;  # Replace with the actual backend server address
        proxy_set_header Host $host;
        proxy_cache mycache;
        proxy_cache_valid 200 10m;
        proxy_cache_key "$scheme$request_method$host$request_uri";
        proxy_cache_use_stale updating;
        proxy_ignore_headers Cache-Control;
    }

    location / {
        # Default configuration for other requests
    }

    proxy_cache_path /var/cache/nginx levels=1:2 keys_zone=mycache:10m max_size=10m inactive=60m;
}

In this example, we have configured a proxy_cache named mycache with a maximum size of 10MB and an inactive timeout of 60 minutes. The proxy_cache_valid directive specifies that responses with a 200 status code should be cached for 10 minutes.

1. Test your nginx configuration and reload nginx to apply the changes:

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nginx -t
service nginx reload

1. Monitor the nginx cache usage and performance to ensure that it is working as expected. You can use tools like nginx-cache-purge to invalidate cache entries or enable logging to troubleshoot any issues.

By following these steps, you can properly configure nginx caching for your REST API and improve its performance by serving cached responses to clients.