Designing a Zero Downtime Migration Solution with Strong Data Consistency – Part I

This post provides an overview of a planned migration from a single-entry bookkeeping balance microservice (v1) to a double-entry bookkeeping balance microservice (v2) for a payment platform. The v2 service aims to reduce development costs and provide more organized and modern code. The post outlines the tech stack, current architecture, and different aspects of accounting, historical data, and bookkeeping services involved in the migration. The plan is spread across five parts, each covering different stages and elements of the migration.