query batching experimental feature (draft)

[garypen]

NOTE: This is a placeholder draft for upcoming discussion. Please don't start discussing yet...

This is the discussion related to the experimental feature introduced by #3837

We are adding support to the router for query batching. The experimental configuration we are adding looks like this:

experimental_batching:
  enabled: true
  mode: batch_http_link

By default this feature is disabled. There is only one supported mode at this time: batch_http_link.

With the feature enabled, the router will accept (and process) queries which look like this:

curl -v \
    --header 'content-type: application/json' \
    --url 'http://127.0.0.1:4000' \
    --data '[{"query":"query MeQuery {\n  me {\n    id\n }\n}"},{"query":"query MeQuery {\n  me {\n    name\n }\n}"}]'

and will yield a response which looks like this:

[{"data":{"me":{"id":"1"}}}, {"data":{"me":{"name":"Ada Lovelace"}}}]

Batch queries will not work correctly if any of the batched queries contain:

• @defer
• subscriptions

Since it's an experimental feature this discussion is opened to gather feedback from the community. Feel free to give your opinions.

[garypen]

query batching is no longer experimental. Closing this discussion