By taking advantage of the CDN, you can significantly improve the performance of your Ajax applications. The contents of the CDN are cached on servers located around the world. In addition, the CDN enables browsers to reuse cached third party JavaScript files for web sites that are located in different domains.
CDN services for open source libraries do not allow you to upload your own content to their servers, they can help you accelerate libraries globally and improve your website’s redundancy.
- jsDelivr - An open source CDN provider that uses the networks of premium CDN providers (KeyCDN, Stackpath, and Cloudflare) to deliver open source project assets.
- cdnjs - The free and open source CDN built to make life easier for developers serving over 11% of all websites, powered by Cloudflare.
- unpkg - A fast, global content delivery network for everything on npm, maintained by Michael Jackson, not affiliated with or supported by npm, and powered by Cloudflare.
- Google Hosted Libraries - A stable, reliable, high-speed, globally available content distribution network for the most popular, open-source JavaScript libraries. Google works directly with the key stakeholders for each library effort and accepts the latest versions as they are released.
- Microsoft Ajax Content Delivery Network - Only hosts popular third party JavaScript libraries such as jQuery and enables you to easily add them to your Web applications.