Name: The Federated GraphQL Subscriptions Zoo - Tom Houlé, Grafbase
Start: 2025-09-08T15:55:00+0100
End: 2025-09-08T16:05:00+0100

Monday, 8 September - Wednesday, 10 September, 2025
In-Person Only | Amsterdam, Netherlands

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Monday September 8, 2025 15:55 - 16:05 BST

IJzaal

Subscriptions are not like queries and mutations. They require specific thinking and care in any implementation strategy.
Federation adds a layer of infrastructure that can complicate subscriptions in two ways:

- scaling, because the federation gateway may have to resolve many subscription streams at the same time,
- translation, because each subgraph has the protocols it supports, and they may not overlap with the protocol used by the clients.

This lightning talk dives into the challenges of translation we encountered in concrete scenarios:

- How websocket init payloads map, or not, to http headers
- How to translate SSE requests to websocket requests
- Alternatives like multipart streams
- Websocket subprotocols

Speakers

Tom Houlé

Engineer, Grafbase

Tom's professional life has gravitated towards GraphQL and Rust, schemas and databases. After authoring the first Rust GraphQL client library, recent years have taken him from the database schema management space at Prisma to GraphQL federation at Grafbase. In his free time, he enjoys... Read More →

Monday September 8, 2025 15:55 - 16:05 BST
IJzaal

GraphQL in Production - Federation and distributed systems

Audience Level Intermediate

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GraphQLConf 2025

Tom Houlé

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