FlatBuffers is a cross platform serialization library architected for maximum memory efficiency. It allows you to directly access serialized data without parsing/unpacking it first, while still having great forwards/backwards compatibility.
Build the compiler for flatbuffers (
cmaketo create the build files for your platform and then perform the compliation (Linux example).
cmake -G "Unix Makefiles" make -j
Define your flatbuffer schema (
Generate code for your language(s)
flatccompiler to take your schema and generate language-specific code:
./flatc --cpp --rust monster.fbs
Use the generated code, as well as the
FlatBufferBuilderto construct your serialized buffer. (
Use your serialized buffer however you want. Send it to someone, save it for later, etc...
Read the data
Use the generated accessors to read the data from the serialized buffer.
It doesn't need to be the same language/schema version, FlatBuffers ensures the data is readable across languages and schema versions. See the
Rustexample reading the data written by
Go to our landing page to browse our documentation.
Supported operating systems
- And any others with a recent C++ compiler (C++ 11 and newer)
Supported programming languages
Code generation and runtime libraries for many popular languages.
- C++ - snapcraft.io
- C# - nuget.org
- Dart - pub.dev
- Go - go.dev
- Java - Maven
- Python - PyPI
- Rust - crates.io
- Swift - swiftpackageindex
- TypeScript - NPM
FlatBuffers does not follow traditional SemVer versioning (see rationale) but rather uses a format of the date of the release.
- FlatBuffers Issues Tracker to submit an issue.
- stackoverflow.com with
flatbufferstag for any questions regarding FlatBuffers.
To contribute to this project, see CONTRIBUTING.
- FlatBuffers Google Group to discuss FlatBuffers with other developers and users.
- Discord Server
Please see our Security Policy for reporting vulnerabilities.
Flatbuffers is licensed under the Apache License, Version 2.0. See LICENSE for the full license text.