fxAxb

Fxaxb is a fictional data interchange format and accompanying toolchain used in educational and illustrative material. It does not correspond to a widely adopted standard, but is described in tutorials and examples to demonstrate how schema-driven binary encoding and code generation can work in practice.

The Fxaxb ecosystem includes the Fxaxb Schema Language (FSL), a compiler named fxaxc, and a runtime library suite. FSL lets developers define data structures, including primitive types, nested records, arrays, maps, optional fields, default values, and enumerations. The fxaxc compiler reads FSL schemas and generates language bindings for common programming languages such as C, C++, Java, Go, and Python. The Fxaxb runtime libraries provide marshaling and unmarshaling functions, as well as validation against the defined schema.

Encoding and design characteristics of fxaxb revolve around a compact binary format using tag-length-value style encoding. Each field in a record is identified by a numeric tag, which supports forward and backward compatibility as schemas evolve. The runtime supports streaming and incremental parsing, enabling partial decoding and low-latency processing of large messages. Validation can be performed against the schema during deserialization, and optional fields can be omitted without breaking compatibility.

Typical use cases described for fxaxb include high-performance data exchange in microservices, embedded systems, and data pipelines where low overhead is desirable. While presented as an instructional example, fxaxb emphasizes clear separation between schema definition, code generation, and runtime data handling, and it is commonly contrasted with real-world formats such as XML, JSON, and other binary protocols.