System design, AI engineering, databases, networking, concurrency and more, written for engineers building real trading and fintech systems — part of the Algomi Suite.
Start here if you are preparing for an Enterprise Solutions Architect interview: the ten-step framework, the landscape you design into, the four diagrams to draw, how to speak about trade-offs, and a worked example.
Created 2026-10-12 · Updated 2026-10-15 · System Design
Mrs. Rao pays ₹1,000 for Diwali groceries, the network hiccups, and she taps Pay again. Follow her payment through idempotency keys, an honest 'unknown' state, webhooks, a double-entry ledger and daily reconciliation, then up to the enterprise questions: stakeholders, compliance, failover and how the design grows.
Created 2026-09-26 · Updated 2026-10-15 · System Design
