Asset management

Getting a better performance from a framework is not all about the backend. The frontend is as important, if not more. It is critical to optimize images, reduce file I/O, and cache the contents to speed up the loading time.

As you know, there are many frontend tools such as LESS that help optimize the frontend performance. How do we do it in Symfony? AsseticBundle is designed to manage assets and optimize the speed for us. It uses various techniques to do this. For example, a large JavaScript file might have hundreds of lines of mutable code that we don't need to load for a specific task. So, we can filter out unwanted code and reduce the load time. The other scenario could be a group of JavaScript functions that are saved in various .js files. If we could combine all of them into one file and filter only what we need, then we can improve the performance radically. Well, that's what Assetic does.

In the older versions of Symfony, this bundle was shipped with it by default...