how do I ensure my changes to the NGINX config file take effect immediately

1. Restart NGINX:
- This is the simplest way to ensure that your changes are applied. Restarting NGINX reloads the configuration files. You can do this by running the command `sudo service nginx restart` (on Linux systems) or `sudo systemctl restart nginx` (on systemd-based systems).

2. Send a HUP Signal:
- You can send a HUP signal to the NGINX master process to reload the configuration. This can be done using the command `sudo kill -HUP `cat /var/run/nginx.pid`` (on Linux systems).

3. Use an Inotify Script:
- You can create a script that uses inotify tools to monitor the NGINX configuration files for changes. When a change is detected, the script can reload NGINX using the `nginx -s reload` command. This approach ensures that NGINX is reloaded automatically whenever the configuration files are modified.

4. Use a systemd Service:
- If you are using systemd, you can create a systemd service that reloads NGINX whenever the configuration files are modified. This can be done by creating a service file that includes a reload command.

Here is an example of how you can create a systemd service to reload NGINX:

bash
   # Create a new file in /etc/systemd/system called nginx-reload.service
   [Unit]
   Description=NGINX Reload Service

   [Service]
   ExecStart=/usr/bin/nginx -s reload
   Restart=always

   [Install]
   WantedBy=multi-user.target
   

- Reload the systemd daemon to pick up the new service file: `sudo systemctl daemon-reload`
- Enable the service to start automatically on boot: `sudo systemctl enable nginx-reload`
- Start the service immediately: `sudo systemctl start nginx-reload`

These methods ensure that your changes to the NGINX config file are applied immediately without requiring a restart of the server.