Nginx-Mainline/PHP-FPM 7.3.11Server optimisation

I have a Clear Linux OS installed running Nginx-Mainline, php-fpm 7.3.11, mariaDB, Symfony 4.3. [login to view URL] It is configured as default and running without any tuning or optimisation. Web server needs optimisations to serve images and video content, potential in the future approx: 100 Thousand unique visitors per day 1.5 Million page views per day Nginx-Modules installed: memc-nginx-module nginx_cookie_flag_module nginx-upload-module ngx_brotli ngx_http_auth_pam_module ngx_http_enhanced_memcached_module redis2-nginx-module My Symfony 4.3 website has two domains with common database, effectively identicate site with different themes. Performance optimisations should consist of the following: - Analyse the Linux server configuration, this means CPU, Memory and disk performance, Nginx configuration, PHP configuration, etc. - Establishing a baseline performance of a specific problematic page, that can be easily reproduces - Analyse the HTML/CSS and Javascript loading to detect any bottlenecks on the page - Optimise loading of external assets by following best modern practices - Caching can be implemented (like in memcached, redis, ...) and PHP OpCache can be configured and deployed - Profile the web application (Blackfire) to detect the parts of the code that take up the most CPU time (like for example slow SQL queries), use the most memory, are waiting for disk I/O the longest, or transferring the most data over the network - SSL settings may need be fine tuned to get a good rating on SSL Labs, keeping in mind the visitors and their browsers. - Finally, write a quick report with your findings, and upon agreement, start optimising the code, system configuration, etc. in order to bring down the time it takes for the page to load.