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gRPC and Protocol Buffers - Networking & APIs | System Design Interview Prep | Repovive

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System Design Interview Prep22 sections · 691 units23h total

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gRPC and Protocol Buffers

High-performance RPC

gRPC is a high-performance RPC framework:

Protocol Buffers (protobuf):

message User {
  int32 id = 1;
  string name = 2;
}

Binary serialization (smaller, faster than JSON)
Schema-defined contracts
Code generation for multiple languages

gRPC features:

HTTP/2 transport (multiplexing, streaming)
Four patterns: unary, server streaming, client streaming, bidirectional
Built-in load balancing and auth

Use gRPC for internal microservice communication. Use REST/GraphQL for public APIs.