How long does it take for data to get updated in the Gamedonia servers?

Data updates (creating, updating or removing an entity in Gamedonia) occurs immediately. If everything runs fine, you should be able to see the results of your calls to Gamedonia right after the calls in your code are executed.

You can check the updates on a collection in the Object Browser section of the Gamedonia Dashboard. Remember the object browser doesn't update automatically and you should click the Filter button every time you expect something to change.

More info here: Data storage guide