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Going deeper on canary and blue-green: how do you actually shift traffic and decide to ramp?

Saying 'route 5% to the canary' is the easy part. The signal is how you split traffic deterministically, gather enough signal to decide, and ramp on evidence rather than vibes. Here is the mechanics layer.

Updated Aug 2026 · Grounded in real Applied AI Engineer interview loops and written to a senior-engineer editorial bar.

Saying 'route 5% to the canary' is the easy part. The signal is how you split traffic deterministically, gather enough signal to decide, and ramp on evidence rather than vibes. Here is the mechanics layer.

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