idempotent-api

Spring Boot Idempotency Starter - fluent API, transactional PostgreSQL, fast Caffeine + Redis caching, JDBC & R2DBC.

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.

Robust, Stripe-grade idempotency key middleware & decorator for FastAPI / Starlette with pluggable backends (Memory, SQLite, Redis)

Idempotent Api Framework, a backend software utility designed to ensure safe request retries and prevent duplicate transaction processing in web services. It provides a seamless user experience to help developers track unique request identifiers, handle concurrent submissions, and maintain data consistency across distributed systems.

API idempotency for Spring Boot

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.

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

Spring Boot 3 prototype reproducing & solving duplicate payment processing caused by HTTP timeouts and client retries using Idempotency Keys, JPA, and H2.

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

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.

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.