Where should I request shopify data? Server side or client?

[BugMaker-Huang]

If I want to request some shopify data after a user action, should I request shopify data from API Routes by useFecther; or just fetching data at client?

[frehner]

Hydrogen is built on Remix, and the Remix philosophy and general guidelines for data loading in Remix are to do as much as you can on the server.

[juanpprieto]

Yes, prefer the server so that I can work without or while javascript is loading.

Ideally use the Remix's <Form /> component to capture and emit the user action, then request/fetch the required data inside the form's action handler and return it.

Finally, call useActionData to read the data returned from the action. This is how the demo-store AddToCart currently works.