Cloud-native, event-driven Node.js/TypeScript backend platform: transactional outbox, multi-device offline-first sync, idempotent health data ingestion, AI/ML and comprehensive observability

Enterprise-grade digital banking platform engineered with C# .NET Core, Angular, and SQL Server (SSMS). Features ACID-compliant payment orchestration, double-entry ledger integrity, T-SQL transaction management, and zero-trust RBAC security.

A lightweight Java library that ensures methods execute only once for duplicate requests. It uses customizable keys and storage providers to manage idempotency seamlessly across distributed systems.

Idempotent REST API with Redis — Idempotency-Key header, duplicate request handling, Spring Boot 21 & Docker Compose

Ledger-based financial transaction backend built with Node.js, Express, and MongoDB. Implements JWT authentication, ACID-compliant transactions, and idempotent APIs to ensure secure and consistent account transfers. Deployed on Render with MongoDB Atlas.

API idempotency for Spring Boot