Last month I let a free execution server replay an evaluation job that still carried a production write key. The model stream came back late, and the shadow worker applied that payload to the shared store anyway. Production then saw a committed key and skipped a different body that the planner ...
Source: [Dev.to](https://dev.to/robinzzz/treat-free-server-eval-as-a-shadow-protocol-before-it-shares-a-write-key-6m0)