Version Management and Rollbacks

You change the prompt to be "funnier." Suddenly, the JSON parser breaks.

Prompt Versioning

Embed a version ID in your prompt code. PROMPT_V_1_2 = "..."

Deployment Strategy: Canary

When executing a new prompt logic:

1. Canary: Send 5% of traffic to the new logic.
2. Monitor: Check error rates (JSON parsing failures).
3. Rollout: If safe, go to 100%.

Model Pinning

Google updates the models. gemini-1.5-flash points to the latest version.

• Risk: If they update the model and it behaves differently, your app breaks.
• Fix: Pin the version. Use gemini-1.5-flash-001 (specific snapshot) instead of latest.

Summary

Pin your model versions. Roll out prompt changes slowly.

In the next lesson, we discuss Scaling.