Techreport blog

Engineering Insights & Guides

The best problem-solving writing in software engineering — databases, performance, security, frontend and distributed systems, in one feed.

11,750 articles
Engineering — Cloudflare Impact reaches $100 million in donations

Cloudflare Impact reaches $100 million in donations

This week, Cloudflare's Impact programs will reach $100 million in donated services. This milestone means that thousands of entities including journalists, civil society, state and local governments, election management bodies, and public schools are being protected from cyberattacks.

PDPatrick DayPatrick Day·September 30, 2026Engineering
AI & ML — Cut your AI spend with AI Gateway's Auto Router

Cut your AI spend with AI Gateway's Auto Router

Cloudflare AI Gateway now features a model router that evaluates request complexity using an edge-deployed classifier to select the optimal model. By balancing expected output quality against token costs, organizations can dramatically cut AI spend while maintaining performance.

MLMing Lu·September 30, 2026AI & ML
SRE & Ops — Detect and send production issues straight to your agent

Detect and send production issues straight to your agent

You can now use built-in error monitoring in Cloudflare Workers to group production failures and send stack traces, logs, traces, and application context directly to a coding agent to investigate further and open a pull request.

TAThomas Ankcorn·September 30, 2026SRE & Ops
AI & ML — Simplifying domains for people and agents

Simplifying domains for people and agents

Cloudflare Registrar’s new search delivers fast, transparent results across 420+ extensions using Workers, Durable Objects, and WebSockets. Its expanded API and cf CLI also let agents search, register, and transfer domains.

ASAnkit Shah·September 30, 2026AI & ML
AI & ML — Identify AI model overuse with User Insights

Identify AI model overuse with User Insights

AI Gateway User Insights now adds task, model, turn, and user categories to help teams understand AI adoption and make better model decisions. This is available free to AI Gateway users.

AKAyush Kumar·September 30, 2026AI & ML
AI & ML — The Internet has a second audience

The Internet has a second audience

More than half the traffic reaching sites on Cloudflare is now automated, and AI agents are the fastest-growing part of it. We're giving site owners the tools to see who's visiting, decide who gets in, and charge for access.

MCMatthew ConroyMatthew Conroy·September 30, 2026AI & ML
Engineering — Summary of reading: July - September 2026

Summary of reading: July - September 2026

"Wuthering Heights" by Emily Brontë - good writing, but the protagonists are quite something. There's barely a likable character in the whole story - they are all either crazy, evil, stupid or a combination of these. It's also remarkable to consider how small the world of some people in those times was …

EBEli Bendersky·September 30, 2026Engineering
AI & ML — Using AI to chart a course for our post-quantum migration

Using AI to chart a course for our post-quantum migration

We’re building CryptoLabe, an internal AI-powered tool that discovers cryptography across our codebase, surfaces dependencies, and helps us progress toward a full post-quantum migration by 2029. Here’s what we’ve learned so far.

SGSharon Goldberg·September 29, 2026AI & ML
Security — Building a certificate authority for the whole Internet

Building a certificate authority for the whole Internet

Twelve years after launching Universal SSL, Cloudflare is applying to become a certificate authority. By combining an established root, an ACME-first approach, and Merkle Tree Certificates, we are building a post-quantum CA for the open web.

SGSteve Goldsmith·September 29, 2026Security
AI & ML — We tested our own WAF with frontier AI models. Here’s what we found

We tested our own WAF with frontier AI models. Here’s what we found

We built a WAF tester that adapted each request based on what the WAF blocked or passed. This helped us explore variations that a fixed test might miss. We ran it across six attack categories on an authorized staging environment and discovered detection gaps worth fixing. Here’s how the loop worked, what got through, and what we did about it.

VGVikram Grover·September 29, 2026AI & ML
Security — Preventing quantum downgrade attacks against IPsec

Preventing quantum downgrade attacks against IPsec

A sophisticated attacker with a quantum computer can exploit a protocol design flaw to downgrade post-quantum IPsec tunnels to classical crypto. We helped the IETF develop a transcript authentication extension to prevent these attacks.

CPChristopher PattonChristopher Patton·September 29, 2026Security