Are values in PlayerPrefs cached during a run?

Questions & Answers
1

I’m deleting a key from PlayerPrefs while running the game, but when I create the same value, I somehow get back the previous result. However, if I quit the game before creating the same key again, I will get the expected default result. This is why I think there might be a cache, but it doesn´t make sense, and I haven´t seen any information about this in the documentation (although it might have slipped my attention).

To give some more details, I´m storing game options for each player in the PlayerPrefs. I delete a player which also calls PlayerPrefs.DeleteKey() and I know it succeeds, because it disappears from the registry (I’m on windows). Then I create a new player, but with the same name, but if I don’t exit the application first, it will get back the same game options values from the PlayerPrefs.

So the question is, are values in PlayerPrefs cached during a run? Thanks in advance for any information!

2

Values are cached. Quote from the reference page for PlayerPrefs.Save():

By default Unity writes preferences to
disk on Application Quit. In case when
the game crashes or otherwise
prematuraly exits, you might want to
write the PlayerPrefs at sensible
‘checkpoints’ in your game. This
function will write to disk
potentially causing a small hiccup,
therefore it is not recommended to
call during actual gameplay.