We currently don't have a clear view of how consistent the search indices are compared to the source of truth. We should define SLOs around these.

The main difficulties here are that we don't have many datapoints yet (inconsistencies are based on monthly mysql table snapshots) and that we are not clear what granularity might make sense (per-wiki, per-content type,...).

AC:

• collect inconsistencies, data collected with a preliminary dashboard at https://superset.wikimedia.org/superset/dashboard/451/?native_filters_key=FNd9a7DWn2Q11F_72h3t5CO2dt2DwwhiIwyUdKIvokscWf8NOjlD4Vf9ltjfBOZn
• have SLI and define SLOs