PayFlow
PayFlow is a distributed microservices sandbox for reliable money transfers, with an HDFC-themed React portal for transactions cryptographic ledger validation.
Services
Backend Architecture, Full-stack Development, System Design
Tools
Java 21, Spring Boot 3.4, React 18, TypeScript, Tailwind CSS v4, Apache Kafka, PostgreSQL, Redis
Value
A high-performance transaction processing and cryptographic audit ledger system featuring synchronous funds validation and asynchronous event-driven logs.
Timeline
Q3 2026
Built a microservices architecture using Java and Spring Boot, orchestrating synchronous REST transfers and asynchronous Kafka streaming. Implemented a deterministic idempotency key to prevent double-charging and Redis caching for high read performance.
Delivered a robust financial sandbox with an append-only cryptographic ledger chain to secure historical records and a highly responsive, single-page React frontend.
