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502 Hydra
+75 XP
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The Checkout Meltdown

CPU is pegged at 99%. Checkout failure rate climbed to 18% at 14:32. A deploy shipped at 14:28. 4,200 users affected. You have 20 minutes.

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System DesignIn ProgressENG-512

Global Rate Limiter Design

You have 3 out of 5 architecture constraints met. Need to figure out the distributed sync mechanism before the load balancer allows the transaction.

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