How to create a RAM drive in macOS Ventura?

How to create a RAM drive (a.k.a. RAM disk) in macOS Ventura ? The Apple App Store lists only a single app for creating a RAM drive. And apparently that app does not actually work, per review comments. For the curious… Reasons to use a RAM drive include: - Avoid needlessly wearing out storage device, whether solid-state or spinning-rust . - Avoid polluting a continuous back-up mechanism, such as Time Machine on macOS , with multiple copies of rewritten files that we'll never need. - Avoid delays waiting for writes-to-storage to complete. RAM is *much* faster than storage, even solid-state storage (“SSD”). These problems are more acute for people developing and/or testing software. Modern file systems perform smart caching in RAM. However, this does not mitigate the problems in the above bullet-list.