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The Credit Engine — Infrastructure Playbook

How to design a credits system that holds up at scale — metering, allocation, billing, and the back-end plumbing nobody warns you about.

• ✓The architecture for metering usage without losing events
• ✓How to allocate, roll over, and expire credits without customer backlash
• ✓The billing and invoicing patterns that survive variable cost swings
• ✓The hidden data pipeline every credits product needs on day one