Five API calls go out at once when a screen appears, the access token has expired, and all five get a 401. Right now each request calls refresh on its own, so the server invalidates the refresh token and the user gets logged out. How would you fix it?
Run the refresh in one place (an actor) as a single in-flight Task so concurrent 401s await the same refresh, then retry the original request once. Refreshing ahead of time based on the expiry is better still.
ConcurrencyShort answerBasics
This code gets called from several threads, and count comes out lower than expected. Can…
#actor #race-condition
NetworkingShort answerAdvanced
In a coding interview you're asked to build, in 30 minutes, an ImageManager that fetches…
#actor
NetworkingShort answerAdvanced
You're asked to build, without third parties, a screen that calls a server search API on…
#race-condition
NetworkingMultiple choiceIntro
Select all the correct statements about HTTP response status codes.
#401