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Chapter III: Architecture & Communication

REST, GraphQL, gRPC

Comparing the three dominant API paradigms and their trade-offs.

In short

REST is resource-based and simple; GraphQL gives clients precise queries; gRPC is fast binary RPC.

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Key takeaways

  • REST = simple & cacheable; GraphQL = precise fetching; gRPC = fast internal RPC.
  • Mix them: GraphQL/REST for clients, gRPC between services.