Cache options on graphql SDL

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1

Hi All,

Just wondering if anyone has gotten cache control headers working with graphql with RW?

I’ve looked into using the @cacheControl directive, but get an error when it tries to merge schema.

Note that I’m talking about server side cache control headers: Server-side caching - Apollo GraphQL Docs and not caching in Apollo client.

Don’t need a solution necessarily, some tips on how to add the directive (and if its possible) can set me off in the right direction.

Thanks!
Danny

2

Wondering if this is going to help (or hinder)?

3

I actually had this working on the CV19 site that was launched when we announced Redwood: Update graphql.js · lachlanjc/predictcovid@6c6a8d3 · GitHub

I did it for the entire site, but I think I did play around with modifying the individual fields.

4

Thanks both! Yeah, I can see that its possible to apply to “all queries”, but I think it would be useful to be able to control at at a query level, especially because Apollo already supports this.

So the more specific question is, how can we add the @cacheControl(maxAge: xx) directive to our graphql server, so it knows how to parse the schema.

I don’t really know enough about apollo/graphql just yet, but I’m guessing RW uses graphql-tools underneath to parse the schema?

Important note on compatibility: Setting cache hints is currently incompatible with the graphql-tools implementation of schema stitching, because cache hints are not appropriately communicated from one service to the other.

Starting points:

5

We’re actually using: https://github.com/Urigo/merge-graphql-schemas

Which is now deprecated! Whoops! They’ve suggested we upgrade to GraphQL Tools: https://www.graphql-tools.com/docs/migration-from-merge-graphql-schemas/