> For the complete documentation index, see [llms.txt](https://metya.gitbook.io/metya/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://metya.gitbook.io/metya/product-and-architecture/data-and-observability.md).

# Data & observability

Unified event bus (Kafka/Pulsar). OperationalDB for app events; LedgerDB for financial events. 

Anti‑cheat joins device/behavior/geo/merchant features with rules + light models; every blacklist/penalty is explainable. 

Public dashboards (roadmap): 

MAPU, cards issued/activation, txs/user & AOV, chargeback rate, merchants active/GMV, quest completion/repurchase, Net Demand with anti‑cheat notes.

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