What is better to use for API design in a high-load service?

Question

API

Good afternoon. Now before the choice, what technologies to use to build an API in a highly loaded service? I know that there is GraphQL, but I would like to hear the opinion of people who already use / have used this technology. As I understand it, there are few design options: REST / JSON API / GraphQL

Answer 1

The data exchange protocol has nothing to do with the fact of loading. Use whatever suits your needs. Let me remind you that:

• REST - Representational State Transfer (simple transfer of state of resources)
  
• JSON API is actually HAL ( Hypertext Application Language )
  
• And GraphQL simply solves the problem of distributed microservices
  

And Highload is about architecture

Answer 2

Doesn't it bother you that a banal spell checker will drop your server and you won't know exactly until the moment when people start complaining? For example, everything was broken by the delayed loading feature. Agencies turned on computers in the morning and the server just died