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AI(opens in a new tab)
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Analytics SQL binding
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Browser Run(opens in a new tab)
D1(opens in a new tab)
Dispatcher (Workers for Platforms)(opens in a new tab)
Durable Objects(opens in a new tab)
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Hyperdrive(opens in a new tab)
Images(opens in a new tab)
KV(opens in a new tab)
Media Transformations(opens in a new tab)
mTLS
Queues(opens in a new tab)
R2(opens in a new tab)
Rate Limiting
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Stream(opens in a new tab)
Vectorize(opens in a new tab)
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HTTP
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Alarm Handler(opens in a new tab)
Connect Handler
Email Handler(opens in a new tab)
Fetch Handler
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assert
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crypto
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dns
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fs
http
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path
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Get Started
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Full-stack application
Single Page Application (SPA)
Static Site Generation (SSG) and custom 404 pages
Worker script

Gradual rollouts(opens in a new tab)
HTML handling
Serving a subdirectory

Migrate from Pages to Workers
Migrate from Netlify to Workers
Migrate from Vercel to Workers

Deploy an existing project

React + Vite
Astro
React Router (formerly Remix)
Next.js
OpenNext adapter
Vue
RedwoodSDK
TanStack Start
Microfrontends
SvelteKit
Vike
Foldkit
fate

Analog
Angular
Docusaurus
Gatsby
Hono
Nuxt
Qwik
Solid
Waku

Expo(opens in a new tab)

FastAPI
Flask
Hono

Agents SDK(opens in a new tab)
LangChain

Connect to databases
Analytics Engine(opens in a new tab)
Vectorize (vector database)(opens in a new tab)
Cloudflare D1(opens in a new tab)
Hyperdrive(opens in a new tab)

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Neon
PlanetScale
Supabase
Turso
Upstash
Xata

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Metrics and analytics
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OpenTelemetry export
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Workers Logs
Real-time logs
Tail Workers
Workers Logpush

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Custom spans
Spans and attributes
Known limitations

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Breakpoints
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Investigate issues
Set up an automation

Sentry(opens in a new tab)

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Wrangler's unstable_startWorker()

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Write your first test
Recipes and examples
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Mock outbound requests
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Isolation and concurrency
Debugging
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Migrate to Vitest plugin
Migrate from Vitest 3 to Vitest 4
Migrate from Miniflare 2's test environments
Migrate from unstable_dev

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Get started
Configure the test harness
Prepare test state
Interact with Workers
Integrations

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Get Started
Writing tests

Compatibility Dates
Fetch Events
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Web Standards
WebSockets

Attaching a Debugger
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Migrating from Version 2

Cache
D1
Durable Objects
KV
R2

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Install/Update Wrangler
API
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Configuration
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Migrate from Wrangler v3 to v4
Migrate from Wrangler v2 to v3

1. Migrate webpack projects
2. Update to Wrangler v2

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Install / Update
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Webpack

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Workers
General commands
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Workers for Platforms
Workflows

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Get started
Tutorial - React SPA with an API

API
Static Assets
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Migrating from wrangler dev
Secrets
Vite Environments
Cloudflare Environments
Non-JavaScript modules
Programmatic configuration

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Examples(opens in a new tab)

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Examples(opens in a new tab)

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The Basics
How Python Workers Work
Foreign Function Interface (FFI)
Standard Library
Examples

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Django
FastAPI
Flask
Langchain

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Supported crates

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Pricing
Limits
Choose a data or storage product
Betas
Deploy to Cloudflare buttons
Claim deployments (temporary accounts)
Built with Cloudflare button
Known issues
Workers for Platforms(opens in a new tab)
Infrastructure as Code (IaC)

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Workers (Historic)
Wrangler(opens in a new tab)

Cloudflare Workers

Glossary

How the Cache works
How Workers works
Migrate from Service Workers to ES Modules
Protocols
Security model

Migrations

Migrate from Wrangler v3 to v4
Migrate from Wrangler v2 to v3
Migrate from Wrangler v1 to v2

Edit on GitHub

Adapted from developers.cloudflare.com/workers/wrangler/migration by Cloudflare, Inc., licensed under CC BY 4.0. Changes were made: this page is re-rendered from the original's source.

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