Rant Time​

I don't know when it started, but frontend development began to compete on "high-end knowledge," constantly bringing up browser underlying principles and how V8 works. It's not that these topics are useless, but the trend suggests that if you don't understand these things, you can't even build a simple webpage.

In my work, I've collaborated with kernel teams and VM teams and consulted them about these related issues. Their attitude is very clear: when facing large-scale engineering projects with tens of millions of lines of code, even as professionals, they don't understand everything. If you happen to meet someone who truly understands everything, they definitely wouldn't be doing frontend work. This makes the "eight-part essay" battles between interviewers and candidates seem ridiculous.

So if you really encounter scenarios that require learning related knowledge, or you're simply personally interested in understanding the principles and details, what's the best approach? It's simple: directly read the blogs or talks from relevant teams or core developers. This is first-hand information, aside from the source code itself, and the quality is much higher than those second-hand dealers.

I haven't updated my blog much in the past two years. Looking back since 2022, I've only published 5 posts (though that wasn't many before either), which is far below my own expectations. Actually, I've written some technical documents and articles internally at my company, but due to length limitations and sensitivity concerns, none of them were made public, which is quite a pity.

The solution to fixing "Font missing in SVG image" is simple. If you just want to see the answer, you can skip to the end. If you want to see my troubleshooting process and specific reasons, you can read from the beginning.

最近给长辈置换一下手机，在有限的预算内，经过多次比较发现还是小米的硬件配置更好一些，最后也是下单了小米。

在 2022 年，Android 系统对手机权限的进一步限制，一些过往的卡顿问题都得到了一定的解决。但是在国内的定制版 Android 机上，和原生 Android 系统还是多了一些特色的东西：

• 无处不在的系统级广告，诱导用户点击/误触，从而去跳转/下载 APP
• “不小心下载” 的 APP，占用宝贵的内存/硬盘资源，拖慢手机速度
• 国内特色的航母级 APP，一个 APP 占几个 G 的硬盘，有些小而美的应用甚至几十个 G

上面的三个问题中，前两个可以通过一定的努力解决大部分，第三个大家都没得选只能硬抗。本文就是聚焦于「关闭 MIUI 无处不在的广告」这个话题的。

作为一名 Web 开发工程师，天天都会和网络打交道。Charles 作为一款网络抓包工具，几乎成了 Web 开发的标配。

本文是我深度使用 Charles 后总结而成，不同于其它介绍 Charles 的文章，这篇文章不会详细介绍 Charles 的各个功能（例如 remote 和 rewrite），而是专注于分析一个问题：什么情况下 Charles 会抓包失败？

对于大部分开发者来说，版本兼容是一件存在感很低的事情，因为它在绝大部分情况下都是一行配置，在一些前端工具链（例如 Babel、CoreJS，Autoprefixer 等工具）的帮助下适配到目标浏览器，只会在一些大的 break change 事件（例如 Vue3 必须在支持 Proxy 的现代浏览器下才能运行）下才会关注这件不起眼的事情。

但当你稍微研究一下的时候，才会发现这块儿内容知识非常杂，因为版本兼容的相关知识没有那么多内在逻辑性，很多细碎的知识点散落在在各个商业公司的博弈和版本变更中。前段时间因工作需要对部分语言/浏览器特性重点关注了一下，以此文做一下记录。

本文主要记录了移动端的版本适配问题，未对桌面端做更多的研究，后面有可能补充相关内容。

最近在做 web 性能优化的工作，所以想集中学习了解一下相关的专题内容。这部分内容肯定要学习一手信息，所以找先找了 https://web.dev/，一个 Google 官方推出的一个面向 Web 开发者的网站，里面有非常多的教程和最佳实践，非常适合有性能优化诉求的开发者去浏览和学习。

网站的核心部分分为 4 类：

• Learn：体系化的教程，例如性能优化和 PWA
• Measure：就是一个在线版本的 Lighthouse，和 Chrome DevTools 的 Lighthouse 功能一致
• Case Study：优化案例（商业互吹），内容一般为采用 X 优化带来数据 Y 的提升最终带来 Z 的商业增长
• Blog：内容较杂，优化教程/API 解读/优化案例等等都有涉及

从上面的结构可以看出，Lean/Measure/CaseStudy 这三个章节内容都是比较体系化的，但是 Blog 内容却没有一个很好的分类。以我的阅读经验，Blog 里有一些非常好的文章，所以我很好奇 Blog 章节里有多少好东西可供挖掘，于是花了几个月的时间，把所有的 Blog 读了一遍，并以自己的认知对内容做了分析和总结，以便自己后续回顾与搜索。

I didn't write much in 2021, so I wanted to start 2022 on a good note by writing some simple content first, recording how I reduced my personal site's file storage costs by 90%.

When developing with React Native, if you're just writing some simple pages, you can basically write them following the official documentation reactnative.dev. However, React Native has hundreds of APIs. Without certain development experience and pitfall-hitting experience, you really can't grasp the key points when facing new requirements.

This article summarizes the problems I encountered in personal React Native development and some less common APIs. If someone happens to see this article and solves actual problems with it, that would be great.

Previous article mainly analyzed React Native's initialization process from a Native perspective and summarized several optimization points for React Native container initialization based on source code. This article focuses on JavaScript and summarizes some JS-side optimization points.