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

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

Production-grade idempotency middleware for Go. Safely coordinates concurrent HTTP retries to guarantee exactly-once execution and deterministic replays. Features conflict detection, panic recovery, and a transport-agnostic architecture designed to support custom distributed storage backends.

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.

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.

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.

API idempotency for Spring Boot