Several apps load settings from Azure App Configuration. They must pick up changes without restarting, but only once you've finished updating a group of related keys. What should the apps watch?
- A A sentinel key that you update last, configured to reload all settings when it changes (correct answer)
- B Every key individually, refreshed every second
- C The versions of secrets in Key Vault
- D The App Configuration store's activity log
Shortcut: Apply config changes together = watch one sentinel key and update it last. Watching every key separately costs far more requests and can load a half-finished set of changes.
Registering one sentinel key for refresh, with the option to reload everything when it changes, means apps apply a batch of edits together once you update the sentinel. Watching every key separately costs far more requests and can load a half-finished set of changes.