Cloudflare Engineering Blog & Tech Articles

Global connectivity cloud platform providing network, security, and developer services with advanced infrastructure technologies

716 engineering articles, tutorials, and technical insights from Cloudflare's engineering team

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Cloudflare

Advanced

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

AWSCloudflare WorkersFortranJavaScriptJSONKubernetesMachine LearningNode.jsPythonReactRustSQLSwiftTypeScriptXSS

14 min read

Includes Code

Cloudflare

Advanced

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

AWSCloudflare WorkersengineeringFortranJavaScriptJSONJWTKubernetesNode.jsReactRustSwiftTypeScriptVYAML

18 min read

Includes Code

Cloudflare

Advanced

Next.js applications, powered by Vite: introducing Vinext 1.0

AWSAWS LambdaCachingCloudflare WorkersJavaScriptJSONKubernetesNetlifyNext.jsNode.jsReactRustSwiftTypeScriptVite

11 min read

Includes Code

Cloudflare

Advanced

Introducing cf: the agentic CLI for the entire Cloudflare API

AWSClaudeCloudflare WorkersengineeringesbuildFortranJavaScriptJSONKubernetesNode.jsPythonRustSwiftTypeScriptVite

13 min read

Includes Code

Cloudflare

Advanced

The road to the agentic browser: A Kitesurf update

AWSCloudflare WorkersCSSFortranHTMLJavaScriptJSONKubernetesNode.jsREST APIRustSQLSwiftTypeScriptWebAssembly

11 min read

Includes Code

Cloudflare

Advanced

Supporting native Rust in Workers with the new Emscripten target for wasm-bindgen

AWSCloudflare WorkersEmscriptenengineeringJavaScriptJSONKubernetesnode.jsNode.jsRustSQLiteSwiftTypeScriptWebAssemblyWebSocket

16 min read

Includes Code

Cloudflare

Intermediate

EmDash 1.0: the stable CMS with a secure plugin registry

AstroAWSCloudflare WorkersengineeringFortranJavaScriptJSONKubernetesNode.jsPHPRustSQLSwiftTypeScriptWebAssembly

16 min read

Includes Code

Cloudflare

Advanced

Introducing The Cold Start: pitch your startup live at Cloudflare Connect

AWSCloudflare WorkersFortranJavaScriptJSONKubernetesNode.jsReactRustSQLSwiftTypeScriptViteVue.jsWebAssembly

9 min read

Includes Code

Cloudflare

Advanced

Introducing Forge: the open source pipeline for generating SDKs, CLIs, docs, and more

ApacheAWSCloudflare WorkersengineeringGraphQLJavaScriptJSONKubernetesNode.jsPHPPythonRustTerraformTypeScriptVite

10 min read

Includes Code

Cloudflare

Advanced

Four months of VoidZero at Cloudflare: making the open-source JavaScript toolchain faster for all humans and agents

BabelCSSengineeringESLintGraphQLHTMLJavaScriptJSONLessPrettierReactRustTypeScriptViteYAML

9 min read

Includes Code

Cloudflare

Advanced

Cloudflare’s 2026 Annual Founders’ Letter

AWSCloudflare WorkersFortranJavaScriptJSONKubernetesNode.jsReactRocketRustSQLSwiftTypeScriptViteWebAssembly

9 min read

Includes Code

Cloudflare

Advanced

Agents can now set up your website’s security with Turnstile Spin

AWSClaudeCloudflare WorkersengineeringFortranJavaScriptJSONKubernetesNode.jsRustSwiftT5TypeScriptVWebAssembly

8 min read

Includes Code

Cloudflare

Advanced

How Cloudflare addressed a cross-tenant data exposure vulnerability in Containers

AWSCloudflare WorkersFortranJavaScriptJSONKubernetesNode.jsReactRustSQLSQLiteSwiftTypeScriptViteWebAssembly

11 min read

Includes Code

Cloudflare

Advanced

Introducing Worker Previews: Isolated preview environments for every change your agent makes

AWSCloudflare WorkersCORSGitJavaScriptJSONKubernetesNode.jsOAuthReactRustServerlessT5TypeScriptV

13 min read

Includes Code

Cloudflare

Advanced

Python Workers are now generally available

Cloudflare WorkersDjangoFastAPIFlaskJavaScriptJSONMySQLNode.jsPostgreSQLPythonReactRustTypeScriptWebAssemblyWebSocket

13 min read

Includes Code

Cloudflare

Advanced

Saving another 100TB of RAM with math (and Rust)

AWSCloudflare WorkersengineeringFortranJavaScriptJSONKubernetesNGINXNode.jsReactRustSQLSwiftTypeScriptWebAssembly

18 min read

Includes Code

Cloudflare

Advanced

When scanners miss the attack: how Cloudflare Client-Side Security protects storefronts

AWSCloudflare WorkersCSSHTMLJavaScriptJSONKubernetesMachine LearningNew RelicNode.jsReactRustSwiftT5TypeScript

27 min read

Includes Code

Cloudflare

Advanced

Have it both ways: stay discoverable in search while disallowing AI training

AWSCloudflare WorkersFortranHTMLJavaScriptJSONKubernetesNode.jsReactRustSQLSwiftTypeScriptViteWebAssembly

15 min read

Includes Code

Cloudflare

Advanced

Give every teammate and agent the right level of access to your Workers

AWSCloudflare WorkersFortranGraphQLJavaScriptJSONKubernetesNode.jsRustSQLSwiftTerraformTypeScriptVWebAssembly

12 min read

Includes Code

Cloudflare

Advanced

How we rebuilt Cloudflare Workers’ module registry for Node.js compatibility

AWSCloudflare WorkersesbuildFortranJavaScriptJSONKubernetesnode.jsNode.jsReactRustSwiftTypeScriptViteWebAssembly

14 min read

Includes Code

Cloudflare

Advanced

Introducing context-aware vulnerability discovery and remediation with Cloudflare Managed Defense and OpenAI Daybreak models

Artificial IntelligenceAWSCloudflare WorkersengineeringFortranGPTJavaScriptJSONKubernetesNode.jsRustSQLSwiftTypeScriptWebAssembly

10 min read

Includes Code

Cloudflare

Advanced

How we saved 100 terabytes of memory by optimizing 1.1.1.1’s DNS cache

AWSCloudflare WorkersengineeringFortranJavaScriptJSONKubernetesNode.jsReactRustSQLSwiftTypeScriptViteWebAssembly

15 min read

Includes Code

Cloudflare

Advanced

The Cloudflare Blog – Brought to you by EmDash

AstroAWSCloudflare WorkersengineeringFortranHTMLJavaScriptJSONKubernetesNode.jsPlanetScalerampRustSwiftTypeScript

14 min read

Includes Code

Cloudflare

Advanced

From all-or-nothing to task-based OAuth consent

AWSCloudflare WorkersengineeringFortranJavaScriptJSONKubernetesNode.jsOAuthReactRustSQLSwiftTypeScriptWebAssembly

9 min read

Includes Code

Cloudflare

Advanced

How Cloudflare detects MCP traffic and helps secure it

AWSClaudeCloudflare WorkersGraphQLHTTPSJavaScriptJSONKubernetesNode.jsOAuthrampReactRustSwiftTypeScript

20 min read

Includes Code

Cloudflare

Advanced

Secure all your internal vibe-coded applications — in one click

AWSCloudflare WorkersengineeringFortranJavaScriptJSONJWTKubernetesLuaNGINXNode.jsReactRustSwiftTypeScript

10 min read

Includes Code

Cloudflare

Advanced

Everything we launched during Agents Week

AstroAWSCloudflare WorkersengineeringFortrangRPCJavaScriptJSONKubernetesNode.jsPythonRustSwiftTypeScriptWebAssembly

9 min read

Includes Code

Cloudflare

Advanced

Unifying Workers AI and AI Gateway into a single AI control plane

AWSCloudflare WorkersFortranJavaScriptJSONKubernetesNode.jsReactREST APIRustSQLSwiftTypeScriptViteWebAssembly

10 min read

Includes Code

Cloudflare

Advanced

Announcing Cloudflare Ambassadors, Community Engineers, and another $1M in open-source funding

AmbassadorAstroAWSCloudflare WorkersFortranJavaScriptJSONKubernetesNode.jsRustSQLSwiftTypeScriptViteWebAssembly

10 min read

Includes Code

Cloudflare

Advanced

Introducing Radar Researcher: An AI tool for exploring Internet data in plain language

AWSCloudflare WorkersengineeringFortranHTMLJavaScriptJSONKubernetesNode.jsRustSQLSQLiteSwiftTypeScriptWebAssembly

14 min read

Includes Code

Cloudflare

Advanced

From ranking to recommended: get your site ready to thrive in the age of AI agents

AWSClaudeCloudflare WorkersGPTHTMLJavaScriptJSONKubernetesNode.jsOAuthReactRustSwiftTypeScriptXML

11 min read

Includes Code

Cloudflare

Advanced

Give any website a WebMCP interface

AWSCloudflare WorkersFortranHTMLJavaScriptJSONKubernetesNode.jsReactRustSQLSwiftTypeScriptViteWebAssembly

10 min read

Includes Code

Cloudflare

Advanced

Introducing Kitesurf: The agent-first browser that runs in V8 isolates on Cloudflare Workers

AngularCloudflare WorkersCORSEmscriptenHTMLJavaScriptJSONNode.jsPreactReactRustSQLiteTypeScriptWebAssemblyWebSocket

19 min read

Includes Code

Cloudflare

Advanced

Building an open Agentic Internet: readable, discoverable, callable, and payable

AWSCloudflare WorkersCSSengineeringFortranHTMLJavaScriptJSONKubernetesNode.jsReactRustSwiftTypeScriptWebAssembly

13 min read

Includes Code

Cloudflare

Advanced

The next generation of MCP

AWSCloudflare WorkersengineeringJavaScriptJSONKubernetesNode.jsOAuthPythonReactRustServerlessSQLiteSwiftTypeScript

15 min read

Includes Code

Cloudflare

Advanced

Cloudflare AI Search: give your agents a search engine for your data

AstroAWSCloudflare WorkersEmbeddingFortranJavaScriptJSONKubernetesNode.jsReplicateRustSwiftTypeScriptViteWebAssembly

12 min read

Includes Code

Cloudflare

Advanced

Cloudflare is the only vendor named a Visionary in 2026 SASE and SSE reports

AWSCloudflare WorkersfinanceFortranJavaScriptJSONKubernetesNode.jsReactRustSQLSwiftTypeScriptViteWebAssembly

11 min read

Includes Code

Cloudflare

Advanced

The Agent Access Model

AWSCachingCloudflare WorkersfinanceFortranGenerative AIJavaScriptJSONKubernetesNode.jsOAuthReactRustSwiftTypeScript

29 min read

Includes Code

Cloudflare

Advanced

How we’re rethinking work at Cloudflare with Cloudflare OS

AWSCloudflare WorkersengineeringfinanceFortranGitJavaScriptJSONKubernetesNode.jsRustSQLSwiftTypeScriptWebAssembly

18 min read

Includes Code

Cloudflare

Advanced

Catching rogue AI behavior with identity-aware analytics

AWSClaudeCloudflare WorkersCopilotFortranJavaScriptJSONKubernetesNode.jsReactRustSQLSwiftTypeScriptWebAssembly

13 min read

Includes Code

Cloudflare

Advanced

WriteGuard: fine-grained controls for MCP Servers

AWSCloudflare WorkersengineeringFortranGitLabHTMLJavaScriptJSONKubernetesNode.jsOAuthReactRustSwiftTypeScript

11 min read

Includes Code

Cloudflare

Advanced

Cloudflare OS: an open platform for agents, apps, and work

AWSCloudflare WorkersengineeringFortranJavaScriptJSONKubernetesNode.jsOAuthReactRustSQLiteSwiftTypeScriptWebAssembly

15 min read

Includes Code

Cloudflare

Advanced

Introducing: Cloudflare Agents

AWSCloudflare WorkersFortranGenerative AIJavaScriptJSONKubernetesNode.jsReactRustSQLSwiftTypeScriptViteWebAssembly

10 min read

Includes Code

Cloudflare

Advanced

The Agent Development Lifecycle has arrived on Cloudflare

AstroCloudflare WorkersengineeringGitHub ActionsJavaScriptJSONKubernetesnode.jsNode.jsrampReactRustTypeScriptViteYAML

14 min read

Includes Code

Cloudflare

Advanced

How we built a software factory to drive Astro’s GitHub issue count to zero

AstroAWSCloudflare WorkersFortranGitHub ActionsJavaScriptJSONKubernetesNode.jsReactRustSwiftT5TypeScriptV

11 min read

Includes Code

Cloudflare

Advanced

How Cloudflare enforces engineering standards using AI

API GatewayAstroAWSCloudflare WorkersengineeringFortranJavaScriptJSONKubernetesNode.jsReactRustSwiftTypeScriptWebAssembly

12 min read

Includes Code

Cloudflare

Intermediate

Run CI/CD for millions of repos — on your platform, on Cloudflare

AWSCloudflare WorkersesbuildGitHub ActionsGraphQLJavaScriptJSONKubernetesNode.jsReactRustSwiftTypeScriptVYAML

15 min read

Includes Code

Cloudflare

Advanced

Announcing Cloudflare Wallets: the programmable wallet for the agentic Internet

AWSCloudflare WorkersFortranJavaScriptJSONKubernetesNode.jsReactRocketRustSQLSwiftTypeScriptViteWebAssembly

10 min read

Includes Code

Cloudflare

Advanced

Your agent needs a computer, not a container — introducing @cloudflare/computer

AWSCloudflare WorkersFortranJavaScriptJSONKubernetesNode.jsReactRustSQLSQLiteSwiftTypeScriptViteWebAssembly

11 min read

Includes Code

Cloudflare

Advanced

Workers RPC now works across Python and JavaScript

AWSCloudflare WorkersCSSFortranJavaScriptJSONKubernetesNode.jsPythonReactRustSQLSwiftTypeScriptWebAssembly

11 min read

Includes Code