ObjectBox is a lightweight yet powerful on-device database for objects and vectors. The out-of-the-box Data Sync keeps data in sync across devices and any kind of backend/cloud reliably for occasionally connected devices. ObjectBox Data Persistence and Data Sync follows an offline-first approach and can be used on-premise as well as with a cloud setup.
Jobs: We're looking for a C++ Developer with a ❤️ for performant code
This is the ObjectBox runtime library to run ObjectBox as an embedded database in your C or C++ application.
Here's a C++ example that inserts a Task data object (a plain user defined struct) into the database:
obx::Box<Task> box(store);
box.put({.text = "Buy milk"}); See ObjectBox C and C++ docs for API details.
Latest version: 4.0.3 (2024-11-11). See changelog for more details.
🧠 First on-device vector database: easily manage vector data and perform fast vector search\ 🏁 High performance on restricted devices, like IoT gateways, micro controllers, ECUs etc.\ 🪂 Resourceful with minimal CPU, power and Memory usage for maximum flexibility and sustainability\ 🔗 Relations: object links / relationships are built-in\ 💻 Multiplatform: Linux, Windows, Android, iOS, macOS
🌱 Scalable: handling millions of objects resource-efficiently with ease\ 💐 Queries: filter data as needed, even across relations\ 🦮 Statically typed: compile time checks & optimizations\ 📃 Automatic schema migrations: no update scripts needed
And much more than just data persistence\ 👥 ObjectBox Sync: keeps data in sync between devices and servers\ 🕒 ObjectBox TS: time series extension for time based data
Some more technical details:
In most cases you want to use the C and C++ APIs in combination with the ObjectBox Generator tool. This way, you get a convenient C or C++ API which requires minimal code on your side to work with the database.
The APIs come as single header file for C and C++:
Compile your code against it and use the binary library (.so, .dylib, .dll depending on the platform) to link against. Head over to ObjectBox C and C++ installation docs for step-by-step instructions.
The C++ API is built on top of the C API exposed by the library (e.g. you still need objectbox.h).
You can also use both APIs from your code if necessary.
For example, you use the C++ obx::Box class for most database operations, but "break out" into the C API for a special function you need.
Note that to use the obx::Box class, you also need the ObjectBox Generator to generate binding code.
Find more details how to use it the Getting started section of the docs.
Have a look at the following TaskList example apps, depending on your programming language and preference:
objectbox-generatorobjectbox-generator
Please refer to the Changelog for the latest updates and changes. We are (mostly) following Semantic Versioning.
If you update from a previous version, please also check the changelog.
Note that e.g. our Android SDK (part of another repo) also exposes the C API, so you can use ObjectBox in your Android NDK projects.
The plain C API (without the Generator) also serves as a basis for ObjectBox bindings in higher languages. For example, the official APIs for Go, Swift, Dart/Flutter and Python rely on the C API. In the same way, you could create an ObjectBox API for another programming language, e.g. for JavaScript. For the C API, data consists of bytes representing FlatBuffers tables, which you can build and read in your language of choice.
ObjectBox supports multiple platforms and languages. Besides C/C++, ObjectBox also offers:
Let us know what you love, what you don’t, what do you want to see next?
We're looking forward to receiving your comments and requests:
Thank you! 🙏
Keep in touch: For general news on ObjectBox, check our blog!
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