Rapid and Safe Migration of a Centralized Microservice Platform to Department‑Built Infrastructure

Background: The author received a notice to migrate a centralized microservice publishing platform (supporting services like Xianyu, Taobao, Alipay, Tmall) to a department‑built solution due to operational inconvenience and security risk during peak periods.

Challenges include complex codebase with many middleware dependencies, dual MySQL and NoSQL data stores requiring consistency, extensive functional verification across multiple applications, and ensuring isolation and stability between old and new systems.

Solution implementation:

Code migration: clone the old repository and reset the remote URL ( git remote set-url origin {newrepo}), then replace project names, configuration files, domain names, package names, and Dockerfiles.

Data migration: keep old and new databases separate, ensure schema consistency, and perform periodic data‑consistency checks.

Functional verification: define business and technical check‑points (login, service list, creation, publishing, DB read/write, message queue, middleware, network), and validate in dev, pre‑release, and production environments.

Stability assurance: monitor server metrics, JVM, service interfaces, and middleware; maintain complete isolation of resources; plan cut‑over and fallback procedures.

The migration was completed within ten working days, with key takeaways: break down complex problems, design comprehensive plans, and fully understand the project to ensure business continuity.