REST vs gRPC — When to Use Which #golang #restapis #grpc #architecture #softwareengineering #coding

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REST vs gRPC — When to Use Which I kept building APIs using REST and JSON like everyone recommends. It worked — until services started talking to each other hundreds of times per second. Then performance became a problem. The issue with REST for internal service communication: • JSON is text → larger payload • Serialization/deserialization overhead • Higher latency • More bandwidth usage This is where gRPC comes in. gRPC uses: • Protocol Buffers (binary format) • Smaller payloads • Faster serialization • HTTP/2 • Streaming support • Code generation • Strong contracts But here’s the important part: gRPC is not a replacement for REST. It’s a different tool for a different job. Binary serialization is much faster than JSON. That’s why: • Microservices → gRPC • Public APIs → REST Senior engineers don’t pick one. They use both where appropriate. grpc vs rest golang grpc tutorial grpc microservices protobuf vs json grpc golang example rest vs grpc performance golang microservices communication grpc tutorial golang backend architecture grpc system design grpc #golang #golangdeveloper #backenddevelopment #softwareengineering #goprogramming #microservices #grpc #restapi #systemdesign #developer #backendengineer