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payments-core

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Banking Payment System designed to meet the demands of modern digital financial services. Built with a polyglot persistence approach and multi-protocol communication, it supports real-time transactions across multiple currencies with robust, multi-layered security measures

  • Updated Oct 2, 2026
  • Java

A high-throughput, thread-safe payment ledger engine built with Java 21 and Spring Boot. Designed to mirror production-grade financial infrastructure, this system implements double-entry accounting, pessimistic row-level locking for concurrency, and a Redis-backed idempotency layer to prevent duplicate charges during network failures.

  • Updated Apr 20, 2026
  • Java

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