Here are some of what I’ve been working lately.
💳 Idempotent Payment Gateway
Resilient financial API designed to handle network failures and retries.
- Tech: Redis, Idempotency Keys, Atomic Locking.
- Highlight: Guarantees transactions are never duplicated, maintaining consistency even with client retries.
📡 Event-Driven Webhook Dispatcher
Fault-tolerant webhook delivery pipeline utilizing Event-Driven Architecture.
- Tech: Apache Kafka, Resilience4j (Circuit Breaker & Retry), Docker.
- Highlight: Ensures eventual delivery and system stability even during third-party service outages.
🎟️ Real-Time Concurrency Booking
High-performance booking system engineered to eliminate Race Conditions.
- Tech: .NET 8, Redis Distributed Locks, Docker.
- Highlight: Validated via stress testing (50 req/s) ensuring 0% overbooking.
🏢 SaaS Multi-tenancy Architecture
Secure data isolation architecture for multi-tenant applications.
- Tech: .NET 9, EF Core Global Filters.
- Highlight: Implemented database-level security (logical Row Level Security) to prevent data leakage.