Protobuf.com, a visual, interactive guide to Protocol Buffers
Protobuf is a fairly simple format, but the way people are first introduced to it often doesn't speak to them. That is how it was for me at first. I tried to address that in two ways: simple visual diagrams where a picture does the work better than prose, and interaction so you can get a feel for the language and how it behaves without installing anything. Some parts of the guide run a real Protobuf compiler, bufbuild/protocompile, in the browser through WASM. It's the same compiler the buf CLI uses. Feedback welcome. Disclosure: I work at Buf, and Buf owns the domain. The guide started…
What it does
Learn the fundamentals of Protocol Buffers: the schema-first architecture, how a message translates across representations, and how schemas become code.
Define your data and APIs once in a schema, generate consistent code for every language, and evolve them for years without breaking existing clients. This guide takes it apart, byte by byte. Protocol Buffers (Protobuf) is a schema-driven format for serializing structured data. The schema is a single source of truth for your APIs and data. Every team and every language generates code from the same definitions. Shared schemas let generated code catch many shape and type mismatches before data crosses a service boundary. Schemas can evolve without breaking what's already deployed. Clients built against older versions keep working. "Protobuf" refers to two things: an Interface Definition…from protobuf.com
In the maker’s words, at launch
Protobuf is a fairly simple format, but the way people are first introduced to it often doesn't speak to them. That is how it was for me at first. I tried to address that in two ways: simple visual diagrams where a picture does the work better than prose, and interaction so you can get a feel for the language and how it behaves without installing anything. Some parts of the guide run a real Protobuf compiler, bufbuild/protocompile, in the browser through WASM. It's the same compiler the buf CLI uses. Feedback welcome. Disclosure: I work at Buf, and Buf owns the domain. The guide started as a side project before I joined.
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