Log analytics using ClickHouse
September 02, 2022 4:33PM
When a request at Cloudflare throws an error, information gets logged in our requests_error pipeline. The error logs are used to help troubleshoot customer-specific or network-wide issues...
Deep dives & how the Internet works
August 25, 2022 7:08PM
Deep Dive Trends Internet Traffic Research Reading ListWe have amazing deep dives in our blog, but also research and how the Internet works kind of stories. Here are some highlights from 2022, and before (with glimpses of our history)....
A story about AF_XDP, network namespaces and a cookie
July 18, 2022 1:56PM
Deep Dive Linux NetworkingA crash in a development version of flowtrackd (the daemon that powers our Advanced TCP Protection) highlighted the fact that libxdp (and specifically the AF_XDP part) was not Linux network namespace aware. This blogpost describes the debugging journey to find the bug, as well as a fix....
Optimizing TCP for high WAN throughput while preserving low latency
July 01, 2022 2:00PM
Deep Dive TCP Latency OptimizationIn this post, we describe how we modified the Linux kernel to optimize for both low latency and high throughput concurrently...
Live-patching security vulnerabilities inside the Linux kernel with eBPF Linux Security Module
June 29, 2022 12:45PM
Linux Security Deep Dive ProgrammingLearn how to patch Linux security vulnerabilities without rebooting the hardware and how to tighten the security of your Linux operating system with eBPF Linux Security Module...
More Posts
June 28, 2022 1:57PM
Hertzbleed explained
Hertzbleed is a brand-new family of side-channel attacks that monitors changes on CPU frequency...
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