Event Catalog

Event	Producer	Consumers	Partition Key
PaymentInitiated	Payment Service	Fraud, Analytics	payment_id
PaymentAuthorized	Payment Service	Ledger, Notification	payment_id
PaymentCompleted	Payment Service	Notification, Analytics, Account	payment_id
PaymentFailed	Payment Service	Notification, Analytics	payment_id
PaymentRefunded	Payment Service	Ledger, Notification	payment_id
FraudCheckRequested	Payment Service	Fraud/Risk	payment_id
FraudCheckCompleted	Fraud/Risk	Payment	payment_id
LedgerTransactionCreated	Ledger Service	Account, Analytics, Reconciliation	account_id
LedgerEntryCreated	Ledger Service	Account	account_id
MarketPriceUpdated	Market Data	Portfolio, Analytics, Fraud	security_id
PortfolioUpdated	Portfolio Service	Analytics	portfolio_id
NotificationRequested	Payment, Account, Portfolio	Notification	customer_id
AuditEventCreated	All Services	Analytics	actor_id

Event Envelope

{
  "event_id": "uuid",
  "event_type": "PaymentCompleted",
  "version": 1,
  "timestamp": "ISO-8601",
  "correlation_id": "uuid",
  "aggregate_id": "payment-uuid",
  "payload": {}
}