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    Cloudflare Blog

    blog.cloudflare.com · Company blog · on HN since 2010

    Cloudflare's engineering and policy team posts on network infrastructure, security incidents, DDoS attacks, and internet protocols.

    Visit blogHN submissions
    NetworkingSecurityDevOps & Cloud
    What HN says

    Commenters list it among their favorites and point to it for technical write-ups such as the analysis of a 400Gbps NTP amplification DDoS attack.

    Stats for nerds
    2.9KHN people shared it
    4Klinked in comments
    102Kstory points
    Aug 2026last shared
    2012people per year2026

    Top posts on HN

    1. 1
      We Stood Up to a Patent Troll and Won
      8 people · 2.1K points · first shared 2019 · 246 comments on HN
    2. 2
      1.1.1.1: Fast, privacy-first consumer DNS service
      24 people · 1.9K points · first shared 2018 · 657 comments on HN
    3. 3
      Patent troll Sable pays up, dedicates all its patents to the public
      2 people · 1.5K points · first shared 2024 · 419 comments on HN
    4. 4
      Cloudflare outage on November 18, 2025 post mortem
      12 people · 1.5K points · first shared 2025 · 916 comments on HN
    5. 5
      Perplexity is using stealth, undeclared crawlers to evade no-crawl directives
      12 people · 1.3K points · first shared 2025 · 748 comments on HN
    6. 6
      Understanding how Facebook disappeared from the internet
      14 people · 1.2K points · first shared 2021 · 259 comments on HN
    7. 7
      Warp – Mobile VPN
      16 people · 1.2K points · first shared 2019 · 486 comments on HN
    8. 8
      Cloudflare defeats patent troll Sable at trial
      1 person · 1.1K points · first shared 2024 · 410 comments on HN
    9. 9
      Blocking Kiwifarms
      16 people · 994 points · first shared 2022 · 1,633 comments on HN
    10. 10
      Verizon and a BGP Optimizer Knocked Large Parts of the Internet Offline
      9 people · 864 points · first shared 2019 · 274 comments on HN

    What HN people wrote when they linked it

    • jackietreehornAug 2017

      Cloudflare https://www.cloudflare.com/ | San Francisco, CA; London, UK; Singapore, SG; Urbana-Champaign, IL; Austin, TX; | VISA, ONSITE
      Cloudflare is building a better Internet. Our long term goal is to give every site the same performance, security, and reliability that major sites like Google and Facebook accomplish, without any specialized network hardware or complicated administration. We enhance millions of sites, including this one.
      We believe in working collaboratively with an emphasis on personal growth and responsibility. Working at Cloudflare lets you wear many hats, spearhead new projects, and shape your career. Product market fit is established, but there's a lot of great engineering, product, sales, and support work to be done. We're starting 2017 at 330 people, with plans to double that in the next year.
      We're always hiring for operations/SRE, sales, general systems engineering (mostly in Go, nginx, and network, as well as DNS at scale), and web development. Here's some specific roles we're keen to hire:
      0) Engineering Manager -- We're looking for an Engineering Manager to lead our PlatOps team, and also generally looking for more managers. Our engineering management team is very strong and we are looking for experienced individuals to join.
      1) Data Engineering(s) -- We have a ton of different technologies that our data engineers work with, and they are a really strong core team here. Kafka, PostgreSQL, Docker, Mesos, Marathon, Chronos, nginx, and so many more…

    • ejcxApr 2017

      Cloudflare https://www.cloudflare.com/ | San Francisco, CA; London, UK; Singapore, SG; Urbana-Champaign, IL; Austin, TX; | VISA, ONSITE

      Cloudflare is building a better Internet. Our long term goal is to give every site the same performance, security, and reliability that major sites like Google and Facebook accomplish, without any specialized network hardware or complicated administration. We enhance millions of sites, including this one.

      We believe in working collaboratively with an emphasis on personal growth and responsibility. Working at Cloudflare lets you wear many hats, spearhead new projects, and shape your career. Product market fit is established, but there's a lot of great engineering, product, sales, and support work to be done. We're starting 2017 at 330 people, with plans to double that in the next year.

      We're always hiring for operations/SRE, sales, general systems engineering (mostly in Go, nginx, and network, as well as DNS at scale), and web development. Here's some specific roles we're keen to hire:

      0) Engineering Manager -- We're looking for an Engineering Manager to lead our PlatOps team, and also generally looking for more managers. Our engineering management team is very strong and we are looking for experienced individuals to join.

      1) Data Engineering(s) -- We have a ton of different technologies that our data engineers work with, and they are a really strong core team here. Kafka, PostgreSQL, Docker, Mesos, Marathon, Chronos, nginx, and so many…

    • rdlJun 2016

      CloudFlare https://www.cloudflare.com/ | San Francisco, CA; London, UK; Singapore, SG; Urbana-Champaign, IL; Austin, TX | VISA, ONSITE

      CloudFlare is building a better Internet -- performance and security optimization at the edge. Our long term goal is to give every site the same performance, security, and reliability that major sites like Google and Facebook accomplish, without any specialized network hardware or complicated administration. We enhance millions of sites, including this one. We're hiring for a variety of roles -- started 2015 at 128, ended around 220, doubling again in 2016.

      This is a perfect time to join -- product market fit is established, but there's a lot of great engineering, product, sales, and support work to be done.

      We've publicly said we're profitable and on track for long term independent success. You may wish to check out our blog to see the kinds of engineering work we do. (https://blog.cloudflare.com/).

      https://www.cloudflare.com/join-our-team has a listing of positions.

      We're always hiring for operations/SRE, sales, general systems engineering (mostly in Go, nginx, and network, as well as DNS at scale), and web development.

      Specific roles we're keen to hire include:

      0) Great operations/SRE staff: operating our system at scale (80+ datacenters around the world, 24x7 coverage, >4 million sites) requires highly competent, hard-working, and communicative engineers.

      1) Product designer(s) -- we're looking for great talent to help build UX…

    • buro9Oct 2015

      CloudFlare | San Francisco, CA | Full Time | ONSITE

      CloudFlare | London, UK | Full Time | ONSITE | VISA

      We have new offices in both locations and are hiring for a lot of positions in engineering, security, and SRE.

      The big languages in use here are Go, C, and Lua, though we also have some projects in PHP and are hiring there too.

      Our positions are listed here: https://www.cloudflare.com/join-our-team

      But... if you're a great candidate and a perfect fit for CloudFlare, then even if there isn't a perfect role for you advertised on the jobs page please apply anyway. We are growing so fast that we do hire the right people and we recognise that our jobs page can lag behind our ambition.

      Special mention for all non-white, non-male candidates or those with jagged CVs ( http://www.georgeandersbooks.com/jaggedresume.html ) or lacking CompSci degrees... we really want to hear from you and you are encouraged to apply.

      If you're thinking of applying but would like to speak to someone first then drop me an email with some info (github, CV, whatever) and let me know what you're interested in working on and I'll intro you to whomever is best suited to answer your questions. My email is dkitchen@cloudflare.com .

      Finally, if you apply... read our blog to get a good idea what we do: https://blog.cloudflare.com/ . We're more than a CDN, and more than just security or DNS.

    • eastdakotaJul 2012

      Here are some blog posts we wrote about CloudFlare's effects on SEO:

      http://blog.cloudflare.com/?search=seo&sort=

      Executive summary: while you should pick your vendor closely, we've worked with the major search engines to ensure that there will be no negative effect on your SEO rank. And, because search engines take speed into account with their rankings, most people see a moderate bump.

      One post we haven't ever written, but we should at some point, is the effect of our Always Online feature on SEO. One of the worst things that can happen to a site for SEO purposes is to have a search engine's crawler come and the server to be down. Crawlers are programmed to back off in these instances (lest they exacerbate to a struggling server's problems). That can quickly hurt rankings. Always Online, as well as the overall resiliency that CloudFlare provides, can help ensure that when a crawler comes to index your site its content will always be available.

      There's a bit about this in the following blog post:

      http://blog.cloudflare.com/an-american-story-surviving-the-crush-of-holi

      But we should write more on it because it's probably more meaningful in terms of rankings for most sites than the speed boost we provide (since speed is a relatively small signal for ranking purposes).

    • hi_hiFeb 2026

      I don't understand the fascination and focus on Vibe Coding.

      Sure, you can do that, it's an option, but no serious engineering effort is being left entirely up to the AI.

      Vibe coding is essentially the Jackson Pollock approach to software building. Throw a bunch of paint down, with very little control, and look, we have something novel.

      It doesn't mean your going to replace all the ways of making art with paint throwing.

      I'd love to start seeing more discussions about alternative approaches to working with AI. The recent Vinext article was great https://blog.cloudflare.com/vinext/. This seems to be "the way" for working with AI in a high stakes production environment, but what other ways are there.

      I fear the focus on vibe coding is diluting and taking focus away from far better alternatives. Maybe because the narrative around those aren't quite so dramatic?

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