知鸦日报2022-05-28

本文，我将客户生命周期划分为以下几个阶段：

• 获取和激活（acquisition，activation）
• 留存和货币化（Retention & monetization）
• 单位经济模型（Unit Economics）

接下来，我将详细介绍每个阶段，并深入地解释它们的指标以及如何计算。

帮助体系的出发点就是在尽量降低人为干预的基础上，减少用户在不同使用阶段中的刻意思考与寻找，从而提升操作的顺畅性及用户的认可度。

本文将基于《深度访谈：如何结交陌生人》一书，结合访谈实践案例，分别从访谈前、访谈进行中、访谈结束三个阶段来依次介绍用户访谈实操小技巧。

轻量级全链路日志采集追踪系统的实现

我要聚合的主要有两类信息，一类是是由我主动创造的，比如 Twitter 上发表的看法、GitHub 上为开源项目提交的问题；一类是我主动收藏或标记的，Pinboard 上收藏的书签、YouTube 上点赞过的视频均属此列。它们有的直接流入我的知识库[^1]，有的保存在线上服务中，作为知识的原材料储备，留待日后进行消化吸收。

考虑到分享的目的，这些信息中还要去掉功能性的部分，只保留我确认有价值的那些。比如 Twitter Like 有时会用于社交目的，作为一种赞赏的回应； YouTube, Spotify 中各种 playlist 很多只是为了满足收集癖，不一定具有普适性；豆瓣的想看、想读只是待确认的 enqueue ，只有看过、读过才是值得推荐的。

Safety is fundamental to Lyft. Thus, as part of the Safety & Customer Care Web team, we strive to provide the safest experience for our users. Our focus is to bring safety and support features to our riders’ web experience (ride.lyft.com); this allows riders to request a ride from their browser without needing the mobile app. In doing so, we also maintain consistency with the mobile app experience.

Ruby is one of the few programming languages that get equality right. I often play around with other languages, but keep coming back to Ruby. This is largely because Ruby’s implementation of equality is so nice.

Nonetheless, equality in Ruby isn't straightforward. There is #==, #eql?, #equal?, #===, and more. Even if you’re familiar with how to use them, implementing them can be a whole other story.

Let's walk through all forms of equality in Ruby and how to implement them.

Uber has operations in over 10,000 cities worldwide and its services include ridesharing, food delivery, package delivery, couriers, freight transportation, electric bicycle and motorized scooter rental, and ferry transport.

Every year we have millions of users going through signup and login on our various apps. Over the years we’ve built independent signup and login experiences for each of our lines of business which allowed us to innovate and move a lot quicker. However, as we scaled and added additional lines of business, our experiences began to diverge leading to some of these inconsistencies being amplified. USL (unified signup and login) enables the vision of “One Uber Identity” through a unified signup and login experience across all Uber apps.

Our original event tracker racks up a mixed record.

随着产品需求复杂性的不断上升，传统功能测试的片面性及滞后性导致测试成本急剧增加、测试效率大幅度下降，仅靠功能测试已难以持续保障项目质量及交付效率。

最近Chrome浏览器升级到96大版本后，二维码入口从地址栏移动至二级菜单。这对H5前端开发来说不太友好，每次需要页面二维码时都需要多点两下(*￣︿￣)。

很多页面布局，特别是那种工具类的、比如编辑器、可视化平台等，为了充分的利用屏幕空间，都会提供拖拽调节各个分栏尺寸的功能，比如像 vscode。

抽象开来，其实就是这样一个布局，左右、上下都是可以调整的；纯 CSS 也是可以实现这样的效果。

使用pb文件定义接口后, 通过 grpc 和 现有http业务 使用同一个pb结构, 发现他们结构之间是有差异的。

用数字1-10来衡量团队管理难度的话，最恰当的是π—— 难度不算大，麻烦无穷尽。