Scaling a FinTech Platform to $100B Transactions with Four Overhauls
Over three years, a small fintech company transformed its platform from a single‑server PHP/Java stack to a micro‑service‑based Spring Cloud architecture, undergoing four major upgrades that introduced distributed systems, SOA governance, big‑data pipelines, MongoDB replication, Redis caching, and open‑source tools, enabling transaction volumes exceeding one hundred billion.
