Lyft自行车和滑板车的服务器驱动UI之旅
by Alex Hartwell and Tim Miko
Across the past couple of years, different mobile app teams across Lyft have been moving to Server Driven UI (SDUI) for three main reasons:
在过去几年中，整个Lyft的不同移动应用团队一直在向服务器驱动的用户界面（SDUI）转变，主要有三个原因。
- To deal with business complexity
- 处理业务的复杂性
- To increase release velocity
- 为了提高释放速度
- To be more flexible in how we staff and build features
- 以更灵活的方式配备人员和建立功能
This post is about Lyft Bikes and Scooters’ journey to SDUI, why we’ve gone down this path, and what’s worked well for us.
这篇文章是关于Lyft自行车和滑板车的SDUI之旅，为什么我们要走这条路，以及什么对我们来说是有效的。
(If you don’t care about the background story that led to us thinking about SDUI, you can skip down to The Core Primitives of SDUI for the nitty gritty tech discussion.)
(如果你不关心导致我们思考SDUI的背景故事，你可以跳到《SDUI的核心原素》去看具体的技术讨论）。
A Quick History of Lyft Bikes and Scooters at Lyft
Lyft自行车和滑板车在Lyft的快速发展史
In 2018, Lyft had just launched dockless scooters (scooters that can start and end a ride without dedicated docking stations) in Denver. We sent what were simply database models directly to the mobile clients (we’ll call these “business models” from here on out) and used ride, vehicle, and hardware properties to drive the UI. Things were simple and they were good.
2018年，Lyft刚刚在丹佛推出了无桩滑板车（无需专用停靠站即可开始和结束骑行的滑板车）。我们把简单的数据库模型直接发送到移动客户端（我们从这里开始称这些为 "商业模式"），并使用乘坐、车辆和硬件属性来驱动用户界面。事情很简单，也很好。
There was a simple mapping of ride state to UI elements (pseudo code)
有一个简单的骑行状态到用户界面元素的映射（伪代码）。
Later that year, we got to work adding dockless electric bikes to the app. Things started to get a little more complex. The ride flow of scooters and bikes was similar, but not exactly the same. The mobile app needed to know what the user was riding so we could change the UI.
那年晚些时候，我们开始工作，将无桩电动自行车添加到应用程序中。事情开始变得有点复杂。滑板车和自行车的骑行流程是相似的，但不完全相同。移动应用程序需要知道用户骑的是什么，这样我们才能改变用户界面。
We added an enum with two cases: “electric scooter” and “electric bike”. We could swap out elements in UI and feature sets with that enum. The enum allowed us to abstract all the product differences behind a single value ...