AMP (Accelerated Mobile Pages) achieves fast loading through several optimizations:
Restricted HTML, CSS, and JavaScript: AMP limits the use of HTML, CSS, and JavaScript to a subset that is known to be fast and safe. This prevents the use of heavy scripts that can slow down page loading.
Example: Only inline styles are allowed, and CSS must be included within the <style> tag in the <head> section.
Pre-rendering: Browsers can pre-render AMP pages, meaning they load the page before the user clicks on it, making the transition appear instant.
Example: When a user hovers over a link to an AMP page, the browser might start loading the page in the background.
Caching: AMP pages are cached by various content delivery networks (CDNs) and the AMP Cache. This allows for rapid delivery of the pages from the cache instead of reloading from the origin server every time.
Example: When a user requests an AMP page, the request is first checked against the AMP Cache, and if available, the page is served directly from there.
Resource Optimization: Images and videos in AMP pages are optimized for size without compromising quality. This includes using responsive images and lazy loading techniques.
Example: Images are served in WebP format and are sized appropriately for different screen sizes, reducing load times.
Parallel Loading: AMP allows resources to be loaded in parallel, which speeds up the overall loading time of the page.
Example: Scripts and stylesheets can be loaded simultaneously, rather than sequentially as in traditional web pages.
For cloud services that support AMP, Tencent Cloud offers solutions like Tencent Cloud CDN which can cache AMP pages efficiently, ensuring fast delivery to users worldwide. Additionally, Tencent Cloud Web Application Firewall (WAF) can help protect AMP pages from security threats while maintaining high performance.