It's a simple plugin named Clear OPcache. When installed, it puts a Flush OPcache button in the top admin bar which allows you to flush the OPcache by clicking it. It will let you know if you don't have OPcache enabled and will link you to documentation. It also clears the OPcache/WinCache during a WordPress update.

It's completely free and we'd appreciate any and all feedback. I appreciate your time!

https://wordpress.org/plugins/clear-opcache/

https://binarycocoa.com/