gRPC and Protocol Buffers: Define, Generate, Debug
Build gRPC services with Protocol Buffers: write .proto files, generate code in Go or Python, handle streaming RPCs, and debug with grpcurl.
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Tags: grpc, protobuf, api
gRPC and Protocol Buffers: Define Services, Generate Code, and Debug gRPC is a high-performance RPC framework that uses Protocol Buffers as its interface definition language and binary serialization format. It is the default choice for internal microservice communication at companies that have outgrown JSON over HTTP/1.1 — not because JSON is bad, but because Protobuf is faster to parse, cheaper to transmit, and caught by a compiler rather than discovered at runtime. This guide covers file syntax, code generation, service patterns, gRPC vs REST tradeoffs, and the debugging tools that fill the gap left by the absence of curl-readable wire output. --- Protocol Buffers: The Interface Definition Language A file defines messages (data structures) and services (RPC contracts). Everything starts…
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