Replay Seattle 2024

At Datadog, Temporal is a key building block that supports many customer-facing products. As a result, workflow replay safety incidents often have customer impact and are operationally intensive to recover from.
In this talk, we cover how the team has worked towards reducing reliance on human factors in order to safely modify workflow code, especially since maintaining replay safety can be tedious and error-prone for even experienced Temporal developers. We’re excited to share our approach to reducing the frequency and impact of replay safety incidents, focusing on Replay Tests, Dynamic Breaking Change Detection, and Deployment Gates.