Technical reading from the Cloudflare blog for the holidays
Dec 22, 2017John Graham-Cumming

Summary
This post highlights several key developments in Cloudflare's data infrastructure and analytics capabilities. It details how Cloudflare analyzes 1 million DNS queries per second using a custom pipeline with ClickHouse and Grafana, and how they made their DNS stack 3x faster. It also touches on hardware performance comparisons (ARM vs. Intel), SystemTap for kernel analysis and performance optimization, and the analysis of DDoS attacks like WireX and reflection attacks. Additionally, it mentions the use of LavaRand for randomness generation and the impact of leap seconds on DNS.
More from the Data Infrastructure & Analytics trail
- Introducing Cloudflare Basin: an open, serverless data platform, now generally available
- Introducing the Billable Usage API: programmatic cost visibility for Cloudflare
- Announcing the Monetization Gateway: charge for any resource behind Cloudflare via x402
- How we built Cloudflare's data platform and an AI agent on top of it
- Iran's Internet is partially restored, Cloudflare Radar data shows