fintech-ledger

To implement a double-entry ledger with idempotent postings, you need atomic transfers with reconciliation checks and append-only postings to prevent balance drift. This approach generates Java services and Liquibase migrations, ensuring balances remain consistent across all financial transactions.

Handling multi-currency reconciliation and FX snapshots in a PostgreSQL ledger requires capturing exchange rates at posting time and using sorted account locking to prevent deadlocks. This ensures accurate balance tracking across currencies without concurrent update conflicts.

Yes, you can use a Blnk API integration instead of a pgledger PostgreSQL implementation for a double-entry ledger. This dual-engine support allows you to fit your project constraints by choosing between an external API or a direct database implementation.

You generate Liquibase migrations and test scaffolding for a Spring Boot financial ledger by providing your fintech project context. The system then produces end-to-end code, domain events, and reconciliation checks to maintain strong invariants and auditability.

Account locking causes deadlocks in financial ledger implementations when concurrent transactions acquire locks on the same accounts in different orders. Prevent deadlocks by using canonical account locking, which sorts accounts before locking to ensure a consistent acquisition order.