Multi Step Processes easy
Your application triggers a background check with a 3rd party API. The check takes 2 days. How should the 3rd party notify your system when the check is complete?
- A Your system should poll their API every second for 2 days.
- B They should send a Webhook (HTTP POST) to an endpoint you provide.
- C They should update your database directly.
- D They should email your system administrator.
Answer: B. They should send a Webhook (HTTP POST) to an endpoint you provide.
Webhooks are the standard 'Push' mechanism for async events. Polling (A) for days is incredibly inefficient. Allowing direct DB access (C) is a massive security risk.
One system design question a day, with spaced repetition so the ones you miss come back.
Get the appRelated questions
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