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[Hyperdrive] explain d1 & hyperdrive #21100

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[Hyperdrive] explain d1 & hyperdrive
thomasgauvin Mar 24, 2025
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Update src/content/docs/hyperdrive/reference/faq.mdx
thomasgauvin Mar 25, 2025
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Expand Up @@ -15,6 +15,18 @@ Hyperdrive connects to your database using [Cloudflare's IP address ranges](http

You can use this to configure restrictions in your database firewall to restrict the IP addresses that can access your database.

### Does Hyperdrive support connecting to D1 databases?

Hyperdrive does not support [D1](/d1) because D1 provides fast connectivity from Workers by design.

Hyperdrive is designed to speed up connectivity to traditional, regional SQL databases such as PostgreSQL. These databases are typically accessed using database drivers that communicate over TCP/IP.
Unlike D1, creating a secure database connection to a traditional SQL database
involves multiple round trips between the client (your Worker) and your database server.
See [How Hyperdrive works](/hyperdrive/configuration/how-hyperdrive-works/) for more detail on why round trips are needed
and how Hyperdrive solves this.

D1 does not require round trips to create database connections. D1 is designed to be performant for access from Workers by default, without needing Hyperdrive.

## Pricing

### Does Hyperdrive charge for data transfer / egress?
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