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The Story of Two Outages

Published on by Louis Poinsignon.

Over the last two days, Cloudflare observed two events that had effects on global Internet traffic levels. Cloudflare handles approximately 10% of all Internet requests, so we have significant visibility into traffic from countries and networks across the world. On Tuesday, September 5th, the government of Togo decided to restrict

How we built rate limiting capable of scaling to millions of domains

Published on by Julien Desgats.

Back in April we announced Rate Limiting of requests for every Cloudflare customer. Being able to rate limit at the edge of the network has many advantages: it’s easier for customers to set up and operate, their origin servers are not bothered by excessive traffic or layer 7 attacks,

The Cuban CDN

Published on by John Graham-Cumming.

On a recent trip to Cuba I brought with me a smartphone and hoped to get Internet access either via WiFi or 3G. I managed that (at a price) but also saw for myself how Cubans get access to an alternate Internet delivered by sneakernet. Cuba is currently poorly served

Today's Network Issue

Published on by Matthew Prince.

Today at 16:13 UTC a large amount of traffic began hitting our Los Angeles data center. We have an in-house team that monitors our network 24x7x365 and immediately all their alarms went off. We initially thought it was a very large attack. In fact, it was something much trickier