Observability & operationsHardSDE-3

Your service runs in three availability zones. Health checks pass everywhere, but about 5% of requests are slow or failing, and you suspect a partial 'gray' failure. How do you detect and handle it?

Asked at

AmazonMicrosoftUber

Think first

Answer out loud as you would in the room — clarify, give numbers, name the trade-off — then compare with the model answer.

Go deeper

Saved on this device. Create a free account to keep it on every device.

Practise this with Sam

A real mock interview, out loud, with an honest scorecard. Free to start.