Technically a cache is stale data. Normally when you update or create a new post W3TC will purge the cache of that file. What is the issue you are having?
Updates via a plugin like Pods will not trigger a cache refresh, perhaps that is the issue? Pods is very programmer-friendly, so you could probably add that behaviour in a non-messy way. I’m not a programmer, so I wouldn’t know how, though.
I reluctant to add logic to support other plugins. Other plugins should instead make sure that they’re plugins are cache friendly. I recommend contacting the author.
I mean that a WordPress site admin could easily add that functionality to their Pods input screens. The plugin has a feature called ‘helpers’ that allow you to execute php code before or after saving content. Clearing the cache could be one of those helpers. Maybe it’d be a good idea to provide a helper? They have an online repository.
Plugin authors can call methods to empty the cache or write plugins for W3TC directly.
