How to enable PHP-FPM request buffering in Nginx for better performance?

To enable PHP-FPM request buffering in Nginx for better performance, you can follow these steps:

1. Open your Nginx configuration file. The location of the configuration file may vary depending on your operating system, but common locations are /etc/nginx/nginx.conf or /etc/nginx/sites-available/default.

2. Find the location ~ \.php$ block in your configuration file. This block is responsible for handling PHP files.

3. Add the fastcgi_buffering directive inside the location ~ \.php$ block. Set it to "on" to enable request buffering. Example:

   location ~ \.php$ { fastcgi_pass unix:/var/run/php/php7.4-fpm.sock; fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name; fastcgi_buffering on; # Enable request buffering ... }

4. Save the configuration file and exit the editor.

5. Test the Nginx configuration to ensure there are no syntax errors. Run the following command:

   nginx -t

   If there are no errors, you should see a message indicating that the configuration file test is successful.

6. Restart Nginx to apply the changes:

   systemctl restart nginx

   Use the appropriate command for your operating system if you are not using systemd.

Enabling PHP-FPM request buffering can improve performance by allowing Nginx to buffer the entire request before sending it to PHP-FPM. This can reduce the number of requests PHP-FPM needs to handle and improve overall server response times.