LedgerStream
Event-sourced ledger processing 40M transactions/day
Problem
The billing platform reconciled balances in nightly batches, so disputes took up to 24 hours to surface and finance had no real-time view of exposure.
IMPACT
Cut reconciliation latency from 24 hours to under 2 seconds and eliminated a class of double-charge incidents entirely.
KotlinKafkaPostgreSQLgRPCKubernetes