Magento 2 has a full caching of pages built in, which is a great way to improve the performance of your site. Magento Community Edition 2.1 uses full-page caching on the server to quickly display products and pages of categories. Full-page caching improves response time and reduces the server load. Magento 2 supports caching inside and through the Varnish extension. The page load time can be reduced to 1 or 2 seconds from a page that usually takes longer.