danmemememe

“Have you emptied your cache?” If you’re a developer, you’ve probably asked your clients this question hundreds of times. It’s not easy to determine if your client has actually cleared his cache. Trying to troubleshoot this issue can eat up a lot of time, especially if you’re going back and forth via email.
Cached Buster a new free WordPress plugin that aims to solve this problem. When activated, it forces browsers to load the most recent file if the file has been modified.
To see it working, simply just enable the plugin and View Source of the current webpage that you’re in. 
You’ll see a modified query string for most CSS, JS assets with ?ver=1557964076
A more detailed information can be read here: https://www.keycdn.com/support/what-is-cache-busting

Cache Buster

I use this when I have a site in development so I'm not constantly asking clients to hold SHIFT+reload pages to see the latest. Also use it on internal sites with dynamic content where speed is less critical than content freshness. Works great!

great for development and internal websites

Adds a filter hook for all CSS, JS links by replacing ?ver values with the last modified time using PHPs filemtype

blogologist

CSS Cache Buster does one very simple but very powerful thing: it ensures that your 
Wordpress blog delivers the very latest version of your CSS stylesheet to your 
visitors, no matter how often or how rarely your edit for CSS.
You no longer need to worry that you’ve made a CSS change that others won’t see 
because of caching issues at their end.
Technically, this plugin automatically appends a last-modified date/timestamp to 
the end of your stylesheet url.
And since this feature is applied as a filter, you don’t have to touch your theme 
files. It just works.
Simple!

CSS Cache Buster

Always deliver the latest version of your CSS stylesheet to browsers. All caching problems solved.

Cache Buster vs CSS Cache Buster