Why a Cloudflare Outage Could Disrupt the Internet
If you were browsing the internet on Tuesday morning, you likely encountered some issues. Popular sites like X and ChatGPT were unresponsive , returning error messages instead of their usual homepages. The culprit? A massive Cloudflare outage .
The good news is that the outage appears to be ending. Cloudflare says it has identified the issue and released a fix, so affected sites should be back online this morning. But that doesn’t change the fact that so many sites are down today, all because one company experienced an unexplained outage. How could a Cloudflare outage seemingly bring down the internet?
What is Cloudflare?
Cloudflare offers a range of products for websites and services designed to improve traffic performance and reliability, as well as cybersecurity. Companies like Cloudflare distribute their network globally, so when users try to visit a website, they ping the closest server. Instead of all users trying to visit your server at once, they use Cloudflare’s local server.
This serves two main purposes: first, it limits the load on your site. If all users try to ping your server at once, this will put a strain on your network and can slow down or even shut it down completely. Routing users to the closest Cloudflare server distributes the load and reduces the risk of outages. Additionally, users are less likely to experience latency due to physical distance to your network: if you’re in Japan and your user is in New York, it will take them longer to reach your server than a user in South Korea. However, if that user in New York connects to the closest Cloudflare server instead, they’ll be able to access your data much faster.
Why is Cloudflare affecting so many websites?
Cloudflare’s goal is to improve the experience of users around the world browsing international websites. So why did it feel like half the internet went down when Cloudflare crashed?
The reason is that so many websites use Cloudflare’s services.According to Backlinko , over 24 million websites actively use Cloudflare in some capacity. This includes over 4,300 of the top 10,000 websites worldwide. In the US alone, there are nearly 2.47 million websites using Cloudflare, and in the UK, nearly 780,000. In many other countries, such as Brazil, Germany, Russia, Australia, Canada, China, India, and France, hundreds of thousands of websites use Cloudflare.
There are over a billion websites worldwide , meaning the overall Cloudflare outage would account for approximately 2% of website connectivity issues worldwide. However, if Backlinko’s statistics are accurate, a huge percentage of popular websites rely on Cloudflare. While the vast majority of websites may not be affected by this outage, nearly half of the most frequently visited sites experienced issues. If you primarily visit websites in the US, this number could be even higher.
It’s the same reason why an AWS (Amazon Web Services) outage causes so many websites to crash . AWS provides cloud computing services to so many companies and websites that when problems arise, you’ll also encounter problems with your favorite sites. This raises a logical question about how the global internet currently functions: yes, it’s great that services like Cloudflare provide reliable access to international sites as if they were local, but if the internet relies on them so heavily, is it really that reliable?