c-questdb-client

QuestDB - Client Library for Rust, C and C++

This library makes it easy to insert data into QuestDB.

This client library implements the InfluxDB Line Protocol (ILP) over HTTP and TCP.

• Implementation is in Rust, with no additional run-time or link-time dependencies on the C++ standard library or other libraries.
• We ship both a static and a dynamic library.
• The library exposes Rust, C11 and C++17 APIs.
• The C++ API is a header-only wrapper over the C API.
• This library also has separate Python bindings.

Insertion Protocols Overview

Inserting data into QuestDB can be done in several ways.

This library supports ILP/HTTP (default-recommended) and ILP/TCP (specific streaming use cases).

Server errors are only reported back to the client for ILP/HTTP. See the flush troubleshooting docs for more details on how to debug ILP/TCP.

For an overview and code examples, see the Ingestion overview page of the developer docs.

To understand the protocol in more depth, consult the protocol reference docs.

Getting Started

To get started, read the language-specific guides.

C

• Getting started with C
• .h header file

C++

• Getting started with C++
• .hpp header file

Rust

• Getting started with Rust
• questdb-rs crate on crates.io
• API docs on docs.rs
• questdb-rs source code
• questdb-rs-ffi source code - C bindings code

Python

• Python GitHub Repo
• questdb package on PyPI
• Documentation

Further Topics

• Data quality and threading considerations
• Authentication and TLS encryption

Community

If you need help, have additional questions or want to provide feedback, you may find us on our Community Forum.

You can also sign up to our mailing list to get notified of new releases.

License

The code is released under the Apache License.