How We Transformed a Microservice Finance System into a Scalable Big Data Warehouse
This article details the evolution of a fast‑growing finance reporting system from a monolithic microservice architecture plagued by data inconsistency, low efficiency, and scalability limits to a robust, high‑performance big‑data warehouse built with layered data models, SparkSQL processing, and unified scheduling, highlighting design decisions, technical trade‑offs, and measurable performance gains.