Content Delivery Networks

When we imported the jQuery library into our client application, we directly referred to its optimized source from its vendor as <script type="text/javascript" src="https://code.jquery.com/jquery-3.3.1.min.js "/>.

Now, imagine that for some reason this site goes down either temporarily or for good; this will make our application unusable, as the import wouldn't work.

Content Delivery Networks come to help in these cases. They serve as a repository for libraries or other static media content, assuring that the needed resources will be available without downtime, even when something goes wrong with their vendors. One of the most popular JavaScript CDNs is https://cdnjs.com/; it provides the most common JS libraries available out there. We will switch our clients to refer to the jquery library from this CDN rather than from its vendors' website at <script type="text/javascript" src="https://code.jquery.com/jquery-3.3.1.min.js "/>.

While there is hardly anything...