系统与基础设施easydns.com
原来半个互联网都有一个单点故障：Cloudflare
Turns out half the internet has a single-point-of-failure called “Cloudflare”
2020 — 2022，它一次次回到首页
黑点是上首页（≥ 50 分）的那次投稿，空心点是没冲上去的投稿，点越大分数越高。
导读
easyDNS 的博客文章指出，互联网上大量网站依赖 Cloudflare 提供 DNS、CDN 和安全防护，使其成为事实上的单点故障——一旦 Cloudflare 出问题，半个互联网都会受影响。文章借 Cloudflare 的一次故障事件讨论了这种中心化依赖的风险。
为什么经久不衰：Cloudflare 至今仍是互联网基础设施的核心一环，关于单点故障和中心化依赖的讨论在多次大范围故障后依然切中要害。
HN 评论精选
Cloudflare 验证码缺乏无障碍方案，把盲人用户挡在大量关键服务之外。
Cloudflare 对盲人非常不友好。读屏软件无法读取图片验证码，而 Cloudflare 的验证码没有音频替代方案。盲人一旦被 Cloudflare 标记，就可能被切断与半个互联网的联系，包括关键的银行、政府、医疗、通信和教育服务——我们比明眼人更依赖互联网。希望 CF 工程师尽快修复，奇怪的是居然还没有因此引发大规模诉讼，这明显违反了多项法律。
miki123211查看英文原文
Cloudflare is horrible for blind people. Screen readers, the programs that use synthesized speech to tell us what's on the screen, cannot read images. Good captchas usually have audio equivalents (which come with their own set of problems), but this one doesn't. If you're blind and flagged by Cloudflare for some reason, you're cut off from accessing half the internet, potentially critical banking/governmental/medical/communications/educational services. We rely on the internet way more than our sighted peers, so this is very important. This has recently happened to me on a few sites, fortunately not critical ones, but it was not a pleasant experience nonetheless. CF engineers, please fix this ASAP. I'm surprised there still isn't a huge lawsuit over this, as this is clearly violating all sorts of laws.
好奇 Cloudflare 的商业模式如何支撑其低价扩张。
真诚提问：我一直没搞懂 Cloudflare 的经济账是怎么算通的，这有助于理解它为何能成为互联网不可或缺的一部分。他们是拿到了廉价带宽的特殊渠道？押注带宽价格会大跌？还是发现了别人没看到的东西？或者只是极擅长把免费用户转化为付费？
michaelbuckbee查看英文原文
Honest question: I've never really understood the back of the napkin math of how Cloudflare functions economically, which I feel would go a long way towards my understanding of why/how they were able to become such an integral and generally positive part of the Internet. Did they have some crazy in to get cheap bandwidth? Did they bet big on bandwidth prices falling? Did they figure something else out that nobody saw? Do they just to a tremendous job of migrating sites from free to paid plans?
提醒读者文章作者有利益相关，本质是竞品营销。
视角有意思，但这看起来就是 easyDNS 为自家"主动式域名服务器"打的广告——虽然也挑不出比竞争对手巨头犯错时更好的发布时机了。不过这不影响关于互联网整体依赖 Cloudflare 这一更重要的讨论。
badRNG查看英文原文
Interesting perspective, but it seems like this is just an ad for easyDNS and their "Proactive Nameservers," though I couldn't imagine a better time than the misstep of a behemoth of a competitor in this space. Not to detract from the more important discussion about the internet's dependence on Cloudflare overall.
从用户角度肯定 Cloudflare 产品质量，认为其流行靠实力而非锁定。
我在自己的网站上用 Cloudflare 做 DNS 和 CDN。它流行不是因为什么阴谋或锁定，而是产品确实好。以前改 DNS 记录要几小时才能全球生效，现在即时生效。CDN 曾把我共享主机上的加载时间减半，还能大幅提升并发承载能力。想关缓存只需在后台勾选一下。这些都是免费套餐——付费版可想而知。
AussieWog93查看英文原文
I use Cloudflare on my sites, for both DNS and CDN. The reason it's so popular isn't because of any conspiracy or vendor lock-in, but because it's a great product. Back before I used them for DNS, any change I made to my records would literally take hours to propagate through the network and be reflected globally. Now, the updates are instant. Their CDN product literally halved site load time back on my old shared host (less of an issue now I'm on DigitalOcean), while at the same time greatly increasing the number of concurrent users it can handle without generating spitting out Error 500 (internal server error). If I need to disable their cache for whatever reason, it's as simple as logging on and ticking a single checkbox in my dashboard. This is all for the free tier - God knows how amazing the paid product would be!
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