Setting response headers for client caching?

[SGudbrandsson]

Hi,

I'm looking for a way to do two things:

1. Set custom response headers (cache-control header for CDN caching and a caching key set header) to the client and
2. Forward response headers from upstream requests to the client

Is it possible to do that out of the box from the .meshrc configuration, or do I need to write a plugin to handle that?

Can you nudge me in the right direction to solve this use case?

If I need to write a plugin for this, then that's not a problem.
What I would like the plugin to do if I do that is:

1. Go through cache control headers of each upstream fetch, and add the cache control headers in an array.
2. Parse the array before returning the response to the client and set the appropriate cache control response header (lowest cache control value, PRIVATE if set, etc.) similar to https://www.apollographql.com/docs/apollo-server/performance/caching/#calculating-cache-behavior
3. Set default values for each upstream source, or maybe even operation.

[ardatan]

You might not need to implement it by yourself. It is already part of our Response Cache plugin.

https://the-guild.dev/graphql/mesh/docs/plugins/response-caching
https://the-guild.dev/graphql/yoga-server/docs/features/response-caching#http-caching-via-etag-and-if-none-match-headers