WP Speed of light for WordPress comes with a lot of optimization systems such as cache system: it generates more static content (HTML) therefore reducing the number of database queries required to load the page. Plus, you have the possibility of storing the major part of the heavy page resources (like images) in the browser cache. And you can clean it when you want! Full optimization list:
- Static file cache system
- Gzip data compression
- Browser caching
- Files group: CSS, JS, Local fonts, Google Fonts
- Resources minification: HTML, CSS, JS
- Specific mobile cache per device
- Remove query string
- Cache external scripts
- Option to disable WordPress features like REST API, RSS feeds, Gravatar, Emojis
- Automatic cache clean: by interval, on save, by user group