Module 02 Summary

What this module established

Read secrets into their own variable, never into an object you might log, and default the model to a fake so misconfiguration fails safely rather than expensively.

Carry forward

• A key that has ever been committed is public. Rotate first - history rewriting is tidying and leaves every clone and CI cache untouched.
• Cost the feature at realistic volume including retries. A 20% retry rate is a 20% cost increase that arrives looking like traffic growth.
• Enforce the spend ceiling in your own code, before each call. A provider alert is a monitor, not a control.

Before moving on

Move on when a fresh clone with no environment passes the tests, and your spend ceiling refuses a call with a clear message.

Mark complete