Java Captain

Jul 28, 2019 · Backend Development

Application Layering: Principles, Alibaba Specification, and Optimized Practices

The article explains why clear application layering—controller, service, manager, DAO—is essential for maintainable backend code, reviews Alibaba's official layer definitions, proposes an optimized layering model with a Thrift TService layer, and discusses domain model conversions to balance reuse and simplicity.