Learning Large-Scale Go Project Architecture from K8s

The Kubernetes project is a good example of a large-scale project with high scalability, reliability, and maintainability using Go. The project has a specific code layout, with top-level directories including api, build, cmd, pkg, and staging. The api directory stores interface protocols, while the build directory contains scripts for building the Kubernetes project. The cmd directory stores the source files of the main package for building executable files. The pkg directory contains the main implementation of each component, and the staging directory temporarily stores code that is interdependent among components. The Kubernetes project does not have an internal directory, unlike standard Go projects, because it started before the concept of internal directories was introduced. A unified top-level directory structure is important for collaboration and development efficiency. The declarative design philosophy of Kubernetes helps keep modules clear and prevents procedural programming. Avoiding over-engineering is also important, as it can lead to circular dependencies and make it difficult to make changes in the future.