Changing a field from "one" to "many" sounds trivial until three different consumers depend on it: an admin studio, a GraphQL API used by web and mobile apps, and a public API used by customers' own integrations.

This talk walks through a real migration on an event technology platform, where a single-value relationship became a multi-value, ordered one. We will cover how we designed the new schema alongside the old one, how we kept existing queries working, how we backfilled data safely, and how we decided when a deprecated field could finally go.

This ad-hoc talk is just Benjie (and any other TSC present) riffing about some of the work that's going on in the GraphQL Working Groups currently. Topics covered include:

GraphQL celebrated it's 10 year birthday last year, today it's PostGraphile's turn! Hear from maintainer Benjie about the origins of the project, the lessons learned along the way, and how the project has evolved to meet the needs of its users despite being MIT-licensed OSS.

A relaxed discussion and Q&A with GraphQL TSC member Benjie Gillam. There is excitement in the air as Benjie celebrates the 10th anniversary of his open source project PostGraphile. This is your chance to ask Benjie about GraphQL, what are his preferred workflows, PostGraphile V5, the new GraphQL Golden Path or anything at all including his favourite colour or what he had for breakfast!

The session will be conducted by Taz Singh with participation from the audience.