System Design Masterclass Vol 1 - Building Financial System That Never Fail
System Design Masterclass Vol 1 - Building Financial System That Never Fail
Stop memorizing architecture. Start engineering it.
Most System Design resources teach you the definitions. They tell you what a Load Balancer is or what Redis is. But they don't teach you the physics of distributed systems.
They don't teach you what happens when the network fails after you charged a credit card. They don't teach you how to prevent a double-booking when 10,000 users click "Pay" at the same second.
System Design Masterclass: Volume 1 fills that gap.
Focused entirely on Financial Systems & Payment Gateways, this book is not a textbook. It is a collection of Interview Simulations.
In each chapter, you are placed in a high-stakes scenario. I present a problem, show you the "Junior Answer" (the intuitive trap that fails in production), and then walk you through the "Staff Engineer Solution"—the robust, scalable architecture that survives the real world.
What you will learn in Volume 1:
- The API Layer: How to implement Idempotency Keys to handle network timeouts without double-charging users.
- The Data Layer: Why standard Database Locking fails at scale, and how to use Optimistic Locking and Double-Entry Ledgers for mathematical correctness.
- The Distributed Layer: How to sync Microservices without using "Two-Phase Commit," mastering Sagas and the Transactional Outbox Pattern.
- Reliability & Scale: How to build self-healing Reconciliation jobs and Shard your database to handle 100M+ transactions.
Who is this for?
- Senior Engineers looking to break into Staff/Principal roles.
- Candidates preparing for high-level System Design interviews (L5/L6).
- Architects building fintech, e-commerce, or high-reliability systems.
What you get:
- 200+ pages of deep technical content (PDF & EPUB).
- High-resolution architectural diagrams.
- SQL schemas and Code Snippets for every pattern.
Don't just code the answer. Architect the solution.
System Design Masterclass: Vol 1 is the definitive guide to architecting crash-proof financial systems. Moving beyond basic theory, this book uses real-world "Interview Simulations" to teach you how to handle race conditions, distributed transactions, and massive scale. Designed for Senior Engineers aiming for Staff roles, it bridges the gap between making code work and building architectures that never fail. Perfect for high-stakes interview prep and production readiness.