What is the best way to organize a cache flush for static files?

Question

PHP

When laying out, css and js files are collected into single compressed files.
Without specifying a get parameter or changing the file name, browsers will not immediately flush the cache. The
question is how best to organize variable substitution without unnecessary actions?
Do not change it at every commit)

Answer 1

https://www.google.ru/webhp?sourceid=chrome-instan...

Answer 2

It's best to calculate the checksum for the file and rename it, this will give 100% cache invalidation, but is also saved from false resets.

Answer 3

I collect gulp statics and it pulls out the version from packages.json and pushes it into the html template.
grunt has grunt-fingerprint