`log-replay`

log-replay is an impact analysis tool that helps to identify which decisions may change when you modify policies and/or data. You can see the impacted decisions by replaying past decisions on modified policies and/or data.

During Log Replay, DAS automatically sets an OPA runtime environment variable (STYRA_DAS_REPLAY set to true) to denote that the decision context is a replay instead of a live decision. See Decision Replay Environment for more details.