What constitutes a "Health Check" for an AI model? Is checking if the HTTP port is open enough?

Explain how Continuous Batching (used in engines like vLLM) differs from traditional static batching. How does it improve GPU utilization?

When is it more cost-effective to use a "Pay-per-token" API (like OpenAI) versus hosting your own model on a dedicated cloud instance (like an AWS g5 instance)?

How would you implement a "Token Quota" system to prevent a single user or a bug in your code from spending $1,000 on API calls in an hour?