High-Availability CDN

The Hive Cloud service leverages the CloudFlare Global Network to deliver your GraphQL schema and schema metadata. This means that your schema will be available from the nearest location to your GraphQL gateway, with amazing uptime, regardless of Hive’s status. This ensures that everything required for your GraphQL API and tooling around it is always available, and reduces the risk of depending on Hive as a single point of failure.

The High-Availability CDN is available only in Hive Cloud, and not available for the self-hosted version. For the self-hosted version you can expose the CDN route handlers via the Hive API. Learn more.

Currently you can access the single services, merged schema, supergraph and metadata (e.g. GraphQL Mesh artifacts) via the CDN.

CDN Access Tokens

To get started with Hive’s CDN access, you’ll need to create a CDN token for your target (see Target & Tokens).

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The CDN access token is considered a secret and should not be shared with anyone else. If a CDN access token is compromised, you can revoke it from the target’s Settings page, and create a new token.

To use your CDN access token, go to your target’s page on Hive’s dashboard and click on the Connect to CDN button.

Artifacts stored in the CDN

You can access the GraphQL schema (SDL), services information (for both Schema-Stitching and Apollo Federeation), Supergraph (for Apollo Federation) and Hive schema metadata via the CDN.

GraphQL schema (SDL)

curl -v -H 'X-Hive-CDN-Key: CDN_ACCESS_TOKEN' \
  "https://cdn.graphql-hive.com/artifacts/v1/TARGET_ID/sdl"

List of Services

curl -v -H 'X-Hive-CDN-Key: CDN_ACCESS_TOKEN' \
  "https://cdn.graphql-hive.com/artifacts/v1/TARGET_ID/services"

Supergraph

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This artifact is only available for Apollo Federation projects.

curl -v -H 'X-Hive-CDN-Key: CDN_ACCESS_TOKEN' \
  "https://cdn.graphql-hive.com/artifacts/v1/TARGET_ID/supergraph"

Hive Metadata

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This artifact is only available for Single and Schema-Stitching projects.

curl -v -H 'X-Hive-CDN-Key: CDN_ACCESS_TOKEN' \
  "https://cdn.graphql-hive.com/artifacts/v1/TARGET_ID/metadata"

How it works

Every time you successfully publish a GraphQL schema to the schema registry, Hive replicated the schema and its metadata, and push it to the CDN to make it globally available through a secured channel.

The artifacts are stored on an S3 compatible bucket. In order to load them, you need to send a GET request to the CDN URL with the X-Hive-CDN-Key header.

Here’s an example for

Example curl Request for accessing SDL

curl -v -H 'X-Hive-CDN-Key: CDN_ACCESS_TOKEN' \
  https://cdn.graphql-hive.com/v1/HIVE_TARGET_ID/sdl
 
/artifacts/v1/c7ce447c-f5e6-4f13-87b8-d3051ba3fc45/sdl > GET
302 < Found
location < Header: https://6d5bc18cd8d13babe7ed321adba3d8ae.r2.cloudflarestorage.com/artifacts/c7ce447c-f5e6-4f13-87b8-d3051ba3fc45/sdl
Found.

In case the request was successfull (correct authorization header was provided and the artifact exists). The CDN will respond with status code 302. You can now access the artifact via the provided URL in the location header. The link is valid for 60 seconds.

Adding -L to the curl command will follow the redirect and return the artifact itself:

Example curl Request for accessing SDL

curl -L -H 'X-Hive-CDN-Key: CDN_ACCESS_TOKEN' \
  https://cdn.graphql-hive.com/v1/HIVE_TARGET_ID/sdl
 
type Query {
ping: String
}%

CDN Caching

The CDN service accepts the ETag and If-None-Match headers.

Every successful response from the CDN service (200 OK) contains the ETag header with a checksum. If you send the same checksum in the If-None-Match header, the CDN service will return 304 Not Modified, but only if the data hasn’t changed. If the data has changed, the CDN service will return 200 OK with the new data and new ETag header.

Using ETag and If-None-Match helps to prevent unnecessary data transfer.

The @graphql-hive/core package uses this feature to save bandwidth and improve performance.

CDN Hosts

Your company might have strict rules for accessing external services. In case you need to allow-list hosts for the CDN service, you can use the following list.

cdn.graphql-hive.com
6d5bc18cd8d13babe7ed321adba3d8ae.r2.cloudflarestorage.com

External Schema Composition Insights