msgspec is a high-performance serialization and validation library designed for applications that need to process structured data efficiently. It combines encoding, decoding and type validation, allowing developers to exchange data between applications while ensuring that incoming values conform to expected structures.
The library is particularly useful for web services, APIs, messaging systems and applications that process large volumes of structured information. Its emphasis on performance helps reduce the overhead normally associated with converting and validating complex data structures.
Developers can use msgspec purely for serialization or combine serialization with schema validation. Its compact data models provide an alternative to conventional classes and dataclasses when processing efficiency is important.
This is free and open source software.
Key Features
- High-performance serialization and deserialization of JSON and MessagePack data.
- Support for YAML and TOML data formats.
- Validate decoded data automatically against schemas defined using type annotations.
- Provide detailed validation errors identifying unexpected values and their locations within nested structures.
- Define efficient structured data models using the lightweight Struct type.
- Support common built-in types, collections, nested structures and optional values.
- Specify constraints for values, including numeric bounds, string lengths and regular expressions.
- Use tagged unions to distinguish between different structured message types.
- Generate JSON Schema definitions from supported structured types.
- Encode and decode structured messages without requiring intermediate dictionary representations.
- Extend serialization behaviour to accommodate custom application types.
- Operate without mandatory third-party runtime dependencies.
- Cross-platform support – runs on Linux, macOS, and Windows.
Website: github.com/msgspec/msgspec
Support:
Developer: Jim Crist-Harif
License: BSD 3-Clause ‘New’ or ‘Revised’ License
msgspec is written in Python and C. Learn Python with our recommended free books and free tutorials. Learn C with our recommended free books and free tutorials.
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