What happens when 5 parallel API calls hit for an expired JWT at the exact same millisecond.
Imagine this: You’ve built a sleek, high-performance React dashboard. The UI is sharp, dark mode is gleaming, components are modularized, and React Query is executing parallel data fetches like a grand symphony.
You brew a cup of coffee, open the app after lunch, hit refresh, and… BAM!
You are immediately booted back to the Login screen. No warnings, no friendly error toasts—just a cold, ruthless redirect.
You check your JWT expiration timer. The access token died 5 seconds ago, but your refresh token is valid for another 14 days. So why on earth did your app decide to kick you out like an uninvited party crasher?
