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Production Ready GraphQL Summary — Part I

mauriciord profile image Maurício R Duarte ・1 min read

I'm reading this book with GraphQL content.

Thanks @leonardomso

book

Pagination: Cursor Pagination

  • Cursor pagination is generally a great choice, because of the accuracy and performance
  • Maybe it's the most common pattern in GraphQL at the moment
  • This pattern lets us design more complex use cases, because of Connection and Edge types
  • Relay clients integrate perfectly with your API because of that

Global Identification: Global ID — Node

  • Like Connections, they can be a good pattern even outside of a Relay context
  • Opaque IDs are recommended
  • You necessarily don't need global identification if you're not planning to use Relay
  • Ensure your global identification contains enough context to globally route to a node, especially in a distributed architecture

Non-Nullability

  • It lets clients avoid defensive code/conditionals
  • It helps to build more predictable schemas

tradeoffs/warnings:

  • It's very hard to predict what can be null
  • Non-null fields and arguments are harder to evolve. Going from non-null to null is a breaking change, but the opposite is not

guidelines for nullability:

  • Should almost always nullable fields that return object types that are backed by database associations, network calls, or anything that could potentially fail
  • Non-null for arguments, because it's more predictable and easy to understand API

That's it.
My first part of the book summary. Thank you.

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mauriciord profile

Maurício R Duarte

@mauriciord

Front-End Developer, passionate about React Native and Expo.

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