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How Workers powers our internal maintenance scheduling pipeline

2025年12月22日

Physical data center maintenance is risky on a global network. We built a maintenance scheduler on Workers to safely plan disruptive operations, while solving scaling challenges by viewing the state of our infrastructure through a graph interface on top of multiple data sources and metrics pipelines....

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How Workers powers our internal maintenance scheduling pipeline

Code Orange: Fail Small — our resilience plan following recent incidents

2025年12月19日

Outage Post Mortem Code Orange

We have declared "Code Orange: Fail Small" to focus everyone at Cloudflare on a set of high-priority workstreams with one simple goal: ensure that the cause of our last two global outages never happens again....

Innovating to address streaming abuse — and our latest transparency report

2025年12月19日

Transparency

Cloudflare's H1 2025 Transparency Report is here. We discuss our principles on content blocking and our innovative approach to combating unauthorized streaming and copyright abuse....

Announcing support for GROUP BY, SUM, and other aggregation queries in R2 SQL

2025年12月18日

R2 Data Edge Computing Rust Serverless SQL

Cloudflare’s R2 SQL, a distributed query engine, now supports aggregations. Explore how we built distributed GROUP BY execution, using scatter-gather and shuffling strategies to run analytics directly over your R2 Data Catalog....

The 2025 Cloudflare Radar Year in Review: The rise of AI, post-quantum, and record-breaking DDoS attacks

2025年12月15日

Year in Review Radar Trends Internet Trends Internet Traffic Outage Internet Quality Security AI

We present our 6th annual review of Internet trends and patterns observed across the globe, revealing the disruptions, advances and metrics that defined 2025. ...

ChatGPT's rivals, Kwai's quiet rise: the top Internet services of 2025

2025年12月15日

Radar Internet Traffic Trends DNS Year in Review

AI competition intensified in 2025 as ChatGPT gained strong challengers. Instagram climbed, X declined, and platforms like Shopee, Temu, and Kwai reshaped global Internet usage. Our 2025 DNS data shows how Internet patterns evolved....

React2Shell and related RSC vulnerabilities threat brief: early exploitation activity and threat actor techniques

2025年12月11日

Vulnerabilities Threat Intelligence Research

Early activity indicates that threat actors quickly integrated this vulnerability into their scanning and reconnaissance routines and targeted critical infrastructure including nuclear fuel, uranium and rare earth elements. We outline the tactics they appear to be using and how Cloudflare is protecting customers. ...

Shifting left at enterprise scale: how we manage Cloudflare with Infrastructure as Code

2025年12月09日

Infrastructure as Code Customer Zero Terraform Dogfooding

Cloudflare has shifted to Infrastructure as Code and policy enforcement to manage internal Cloudflare accounts. This new architecture uses Terraform, custom tooling, and Open Policy Agent to enforce security baselines and increase engineering velocity....

Python Workers redux: fast cold starts, packages, and a uv-first workflow

2025年12月08日

Cloudflare Workers Python

Recent advancements in Cloudflare Python Workers means fast cold starts, comprehensive package support, and a great developer experience. We explain how they were achieved and show how Python can be used to build serverless applications on Cloudflare....

Cloudflare outage on December 5, 2025

2025年12月05日

Outage Post Mortem

Cloudflare experienced a significant traffic outage on December 5, 2025, starting approximately at 8:47 UTC. The incident lasted approximately 25 minutes before resolution. We are sorry for the impact that it caused to our customers and the Internet. The incident was not caused by an attack and was due to configuration changes being applied to attempt to mitigate a recent industry-wide vulnerability impacting React Server Components....

Cloudflare WAF proactively protects against React vulnerability

2025年12月03日

Cloudforce One WAF Web Application Firewall Vulnerabilities CVE React

Cloudflare offers protection against a new high profile vulnerability for React Server Components: CVE-2025-55182. All WAF customers are automatically protected as long as the WAF is deployed....

Cloudflare's 2025 Q3 DDoS threat report -- including Aisuru, the apex of botnets

2025年12月03日

DDoS Reports DDoS

Welcome to the 23rd edition of Cloudflare’s Quarterly DDoS Threat Report. This report offers a comprehensive analysis of the evolving threat landscape of Distributed Denial of Service (DDoS) attacks based on data from the Cloudflare network. In this edition, we focus on the third quarter of 2025....

Why Replicate is joining Cloudflare

2025年12月01日

AI Workers AI Developers Acquisitions

Today, we’re excited to announce that Replicate is officially part of Cloudflare. We wanted to share a bit about our journey and why we made this decision. ...

Partnering with Black Forest Labs to bring FLUX.2 [dev] to Workers AI

2025年11月25日

AI Workers AI Developers

FLUX.2 [dev] by Black Forest Labs is now on Workers AI! This advanced open-weight image model offers superior photorealism, multi-reference inputs, and granular control with JSON prompting....

Get better visibility for the WAF with payload logging

2025年11月24日

Firewall WAF Logging

The WAF provides ways for our customers to gain insight into why it takes certain actions. The more granular and precise the insight, the more reproducible and understandable it is. Revamped payload logging is one such method. ...

Cloudflare outage on November 18, 2025

2025年11月18日

Outage Post Mortem Bot Management

Cloudflare suffered a service outage on November 18, 2025. The outage was triggered by a bug in generation logic for a Bot Management feature file causing many Cloudflare services to be affected. ...

Replicate is joining Cloudflare

2025年11月17日

Acquisitions Developer Platform Developers AI

Bringing Replicate’s tools into Cloudflare will continue to make our Workers Platform the best place on the Internet to build and deploy any AI or agentic workflow. ...

Finding the grain of sand in a heap of Salt

2025年11月13日

Salt Engineering Configuration Management SRE

We explore the fundamentals of Saltstack and how we use it at Cloudflare. We also explain how we built the infrastructure to reduce release delays due to Salt failures on the edge by over 5%. ...

Connecting to production: the architecture of remote bindings

2025年11月12日

Cloudflare Workers R2 D1

Remote bindings allow you to connect your local Worker code to deployed Cloudflare resources like R2 and D1. Come along on the technical journey of how we built this feature to create a seamless local development experience....

A closer look at Python Workflows, now in beta

2025年11月10日

Workflows Cloudflare Workers Python

Cloudflare Workflows, our durable execution engine for running multi-step applications, now supports Python. That means less friction, more possibilities, and another reason to build on Cloudflare....

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