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Thank you for helping improve Cloudflare's documentation! Remix ↗ is a framework that is focused on fully utilizing the power of the web. Like Cloudflare Workers, it uses modern JavaScript APIs, and it places emphasis on web fundamentals such as meaningful HTTP status codes, caching and optimizing for both usability and performance. In this guide, you will create a new Remix application and deploy

Thank you for helping improve Cloudflare's documentation! Hyperdrive is a service that accelerates queries you make to existing databases, making it faster to access your data from across the globe, irrespective of your users' location. Hyperdrive supports any Postgres database, including those hosted on AWS, Google Cloud and Neon, as well as Postgres-compatible databases like CockroachDB and Time

Thank you for helping improve Cloudflare's documentation! There are several reasons to migrate your Workers to the ES modules format: Durable Objects, D1, Workers AI, Vectorize and other bindings can only be used from Workers that use ES modules. Your Worker will run faster. With service workers, bindings are exposed as globals. This means that for every request, the Workers runtime must create a

Thank you for helping improve Cloudflare's documentation! With Email Workers you can leverage the power of Cloudflare Workers to implement any logic you need to process your emails and create complex rules. These rules determine what happens when you receive an email. Creating your own rules with Email Workers is as easy or complex as you want. You can begin using one of the starter templates that

Thank you for helping improve Cloudflare's documentation! Public Bucket is a feature that allows users to expose the contents of their R2 buckets directly to the Internet. By default, buckets are never publicly accessible and will always require explicit user permission to enable. Public buckets can be set up in either one of two ways: Expose your bucket as a custom domain under your control. Expo

The HTMLRewriter class allows developers to build comprehensive and expressive HTML parsers inside of a Cloudflare Workers application. It can be thought of as a jQuery-like experience directly inside of your Workers application. Leaning on a powerful JavaScript API to parse and transform HTML, HTMLRewriter allows developers to build deeply functional applications. The HTMLRewriter class should be

Thank you for helping improve Cloudflare's documentation! Cron Triggers allow users to map a cron expression to a Worker using a scheduled() handler that enables Workers to be executed on a schedule. Cron Triggers are ideal for running periodic jobs, such as for maintenance or calling third-party APIs to collect up-to-date data. Workers scheduled by Cron Triggers will run on underutilized machines

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Thank you for helping improve Cloudflare's documentation! Developers can use the TryCloudflare tool to experiment with Cloudflare Tunnel without adding a site to Cloudflare's DNS. TryCloudflare will launch a process that generates a random subdomain on trycloudflare.com. Requests to that subdomain will be proxied through the Cloudflare network to your web server running on localhost. Follow these

Welcome to CloudflareExplore guides and tutorials to start building on Cloudflare's platform

Allow a client to request static assets while waiting for the HTML response. Set up an A/B test by controlling what response is served based on cookies. This version supports passing the request through to test and control on the origin, bypassing random assignment.

Thank you for helping improve Cloudflare's documentation! 1.1.1.1 is Cloudflare’s public DNS resolver. It offers a fast and private way to browse the Internet. DNS resolvers ↗ translate domains like cloudflare.com into the IP addresses necessary to reach the website (like 104.16.123.96). Unlike most DNS resolvers, 1.1.1.1 does not sell user data to advertisers. 1.1.1.1 has also been measured to be

Create full-stack applications that are instantly deployed to the Cloudflare global network. Deploy your Pages project by connecting to your Git provider, uploading prebuilt assets directly to Pages with Direct Upload or using C3 from the command line.

To post messages from your Cloudflare Worker into a Slack channel, you will need to create an application in Slack’s UI. To do this, go to Slack’s API section, at api.slack.com/apps ↗, and select Create New App. Slack applications have many features. You will make use of two of them, Incoming Webhooks and Slash Commands, to build your Worker-powered Slack bot. Incoming Webhooks are URLs that you c

Thank you for helping improve Cloudflare's documentation! The Cache API ↗ allows fine grained control of reading and writing from the Cloudflare global network ↗ cache. The Cache API is available globally but the contents of the cache do not replicate outside of the originating data center. A GET /users response can be cached in the originating data center, but will not exist in another data cente

Thank you for helping improve Cloudflare's documentation! Cloudflare Tunnel provides you with a secure way to connect your resources to Cloudflare without a publicly routable IP address. With Tunnel, you do not send traffic to an external IP — instead, a lightweight daemon in your infrastructure (cloudflared) creates outbound-only connections to Cloudflare's global network. Cloudflare Tunnel can c

Thank you for helping improve Cloudflare's documentation! To create and manage tunnels, you will need to install and authenticate cloudflared on your origin server. cloudflared is what connects your server to Cloudflare's global network. You have the option of creating a tunnel via the dashboard or via the command line. We recommend getting started with the dashboard, since it will allow you to ma

Thank you for helping improve Cloudflare's documentation! By default, the DNS server ↗ your devices use is provided by your Internet service provider (ISP). Some ISPs and network equipment providers partner with Cloudflare to add safer browsing to their offerings. If your providers are not currently using Cloudflare, you can change the DNS settings on your device or router as detailed in the follo

Thank you for helping improve Cloudflare's documentation!

Thank you for helping improve Cloudflare's documentation! With DNS over HTTPS (DoH), DNS queries and responses are encrypted and sent via the HTTP or HTTP/2 protocols. DoH ensures that attackers cannot forge or alter DNS traffic. DoH uses port 443, which is the standard HTTPS traffic port, to wrap the DNS query in an HTTPS request. DNS queries and responses are camouflaged within other HTTPS traff

Thank you for helping improve Cloudflare's documentation! Build serverless applications and deploy instantly across the globe for exceptional performance, reliability, and scale. Cloudflare Workers provides a serverless ↗ execution environment that allows you to create new applications or augment existing ones without configuring or maintaining infrastructure. Cloudflare Workers runs on Cloudflare

Thank you for helping improve Cloudflare's documentation! Cloudflare Rules allow you to make adjustments to requests and responses, configure Cloudflare settings, and trigger specific actions for matching requests. Rules features require that you proxy the DNS records of your domain (or subdomain) through Cloudflare.

To get started using Cloudflare's products and services via the API, refer to how to interact with Cloudflare, which covers using tools like Terraform and the official SDKs to maintain your Cloudflare resources. Using the Cloudflare API requires authentication so that Cloudflare knows who is making requests and what permissions you have. Create an API token to grant access to the API to perform ac