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 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.
Inserting data into QuestDB can be done via one of three protocols.
| Protocol | Record Insertion Reporting | Data Insertion Performance |
|---|---|---|
| ILP | Errors in logs; Disconnect on error | Best |
| CSV Upload via HTTP | Configurable | Very Good |
| PostgreSQL | Transaction-level | Good |
This library implements the ILP protocol and mitigates the lack of confirmation and error reporting by validating data ahead of time before any data is sent to the database instance.
For example, the client library will report that a supplied string isn't encoded in UTF-8. Some issues unfortunately can't be caught by the library and require some care and diligence to avoid data problems.
For an overview and code examples, see the ILP page of the developer docs.
To understand the protocol in more depth, consult the protocol reference docs.
To get started, read the language-specific guides.
C
C++
Rust
- Getting started with Rust
questdb-rscrate on crates.io- API docs on docs.rs
questdb-rssource codequestdb-rs-ffisource code - C bindings code
Python
If you need help, have additional questions or want to provide feedback, you may find us on Slack.
You can also sign up to our mailing list to get notified of new releases.
The code is released under the Apache License.