用于单体仓库的分布式构建服务

In the world of version control systems, a monorepo — short for single repository — puts the code for multiple software development projects in one place to facilitate code sharing, tooling, and versioning. It offers several advantages over the alternative strategy — microrepos, or separate repositories for each part of a system — which is why DoorDash is transitioning from microrepos to a monorepo structure.

在版本控制系统的世界中，单体库——单一代码库的缩写——将多个软件开发项目的代码放在一个地方，以促进代码共享、工具和版本控制。与替代策略——微库，即系统每个部分的单独代码库——相比，它提供了几个优势，这就是 DoorDash 正在从微库过渡到单体库结构的原因。

But despite simplifying dependency management, supporting atomic changes across projects, and making refactoring easier — all while promoting code reuse and consistency in the build process — monorepos come with challenges, too. Scalability is an issue, as are longer build times and more complex access controls. In this post, we will explore how our in-house build service manages the challenges while ensuring fast and reliable monorepo changes while serving as the backbone of our continuous integration, or CI, pipeline.

但尽管简化了依赖管理，支持跨项目的原子更改，并使重构变得更容易——同时促进代码重用和构建过程中的一致性——单体库也面临挑战。可扩展性是一个问题，构建时间更长和更复杂的访问控制也是如此。在这篇文章中，我们将探讨我们的内部构建服务如何管理这些挑战，同时确保快速和可靠的单体库更改，并作为我们持续集成（CI）管道的支柱。

At the time this system was built, DoorDash primarily used Kotlin on the backend with more than 200 microrepos. Some of these repositories were larger, had a Gradle multi-project build, and included integration tests, making CI times less than snappy. Additionally, it was onerous to load a larger repo into an integrated development environment. Ultimately, these challenges motivated DoorDash’s shift toward the monorepo paradigm for our Kotlin services. As the number of projects in the monorepo grew, build times grew alongside them, and it became apparent that we needed a scalable and efficient build service. Additional background information can be found in our Developer Productivity Engineering Summit 2023 talk.

在构建该系统时，DoorDash 主要在后端使用 Kotlin，并拥有超过 200 个微库。其中一些库较大，具有 Gradle 多项目构建，并包含集成测试，使 CI 时间变得不够迅速。此外，将较大...