Additional complexity. A link to a CDN file won’t work if you’re developing offline. … Files may not be optimized. Consider a modular library such as Modernizr or YUI. … There are no pre-caching guarantees. … Blocked access. … Two points of failure. … Security. … Loss of control.

What is not advantage of CDN?

The main disadvantages of using a content delivery network are: Content delivery networks cost additional money. Adds complexity to your website and deployment procedures. Customers may have network filters that block some Content delivery networks and prevent your content from being loaded.

Should you always use CDN?

A CDN helps e-commerce sites deliver content quickly and efficiently even during times of heavy traffic, like Black Friday and the holidays. Government. Large, content-heavy websites can deliver vital information to citizens much more quickly and efficiently by using a CDN.