Firebase remote config instant localization after language change on app

Question

is there a way to instantly reload FirebaseRemoteConfig cache after app locale changed on app?

It is working as expected while using development mode because minimumFetchIntervalInSeconds is set 0 so basically it does not store cache at all.

But when comes to production version it does need to wait while FirebaseRemoteConfig cache fetch interval ends.

For localization I am using: USER_PROPERTY -> LANGUAGE_CODE which is set after user changes language on app.

Solution

If you want to force a request to the server for a single request, you can use this API which lets you override the minimumFetchInterval (example in Swift):

remoteConfig.fetch(withExpirationDuration: TimeInterval(0)) { (status, error) -> Void in
  ...
}

Be sure to only use this in a part of your app that happens infrequently, otherwise you may get temporarily throttled.

Comments

[Antonis Radz]

I am using similar strategy, except doing remoteConfig.reset() and then doing re fetch. But I don't think that is the best practice, what if user changes language on app 10 times an hour? Of course it is not common case, but....