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2026-09-23 · blog.cloudflare.com

We just shipped support for the ugliest part of HTTP: Vary

Vary support is now available in Cache Rules on every plan. You can normalize known negotiation headers, pass exact values through to the origin when those small differences matter, or bypass cache when the variation is too unpredictable.

★ 2026-09-22 · open.substack.com

The Quest for Universal Flu Vaccines

Modern flu vaccines have an average efficacy of just 40 percent, and they must be revamped each year. How can we make vaccines that are “universal” — both broadly-protective and highly potent?

influenza evolves so quickly that a novel virus emerges each flu season
inactivate viruses with formaldehyde
2026-09-21 · linuxize.com

sudo Cheatsheet

sudo at a glance: running commands as root, credential caching, environment handling, sudoers rule syntax, aliases, Defaults, and logging.

2026-09-20 · qwen.ai

Qwen-Image-2.1: Compact, Efficient, and Unified Image Creation

GITHUB HUGGING FACE MODELSCOPE We are excited to open-source Qwen-Image-2.1, an image model in the Qwen family that balances generation quality, inference efficiency, and cost. Qwen-Image-2.1 unifies text-to-image generation and image editing in a single model, with just 7B…

2026-09-20 · system-design-in-depth.pages.dev

System Design In Depth

Deep system design curriculum — 18 modules, 200 units, 118 architecture diagrams, from-scratch algorithm builds, and curated video walkthroughs for senior engineers.