Relay example

1. Does Facebook use relay?
2. What is relay in web development?
3. How does React relay work?
4. Why use relay in GraphQL?

Does Facebook use relay?

Facebook developed the Ads Manager App using a JavaScript framework called Relay. This framework combines React and React Native apps with GraphQL data fetching, thereby facilitating the quick development of data-driven applications.

What is relay in web development?

Relay is data-fetching turned declarative. Components declare their data dependencies, without worrying about how to fetch them. Relay guarantees that the data each component needs is fetched and available. This keeps components decoupled and promotes reuse.

How does React relay work?

Developers compose these React components naturally, and Relay takes care of composing the data queries into efficient batches, providing each component with exactly the data that it requested (and no more), updating those components when the data changes, and maintaining a client-side store (cache) of all data.

Why use relay in GraphQL?

Relay handles data through declarative statements in GraphQL, composing the data query into efficient batches while keeping to the stated data structuring. Because of this, Relay is very fast, very efficient, and more important, extensible to the application demands in a dynamic manner.