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QuestDB

QuestDB is a high performance, open-source, time-series database

QuestDB

The QuestDB Web Console showing a live technical-analysis dashboard

QuestDB is a high performance, open-source database for time series data. It delivers ultra-low latency, high ingestion throughput, and a multi-tier storage engine. Native support for Parquet and SQL keeps your data portable, AI-ready—no vendor lock-in.

QuestDB is designed from the ground up to operate as close to the hardware as possible -- eliminating ingestion bottlenecks and lowering overall hardware requirements.

The codebase is built from scratch in zero-GC Java, C++ and Rust (QuestDB Enterprise).

To learn more about QuestDB, check the following:

Join our active public Slack and our community forum

See our public roadmap at public roadmap.

Community and Contributions

You can contribute to the QuestDB open source project: source code, documentation, bug reports, feature requests or feedback.

To get started:

  1. Good first issues
  2. Contribution guide
  3. Fork the repo and open a pull request.

We send QuestDB swag to our contributors.

🌍 Career opportunities

QuestDB is a remote-first company building high performance open-source software. We're always on the lookout for talented people to join the QuestDB team in these roles:

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  1. questdb questdb Public

    QuestDB is a high performance, open-source, time-series database

    Java 17.4k 1.7k

  2. net-questdb-client net-questdb-client Public

    The official .NET/C# client for QuestDB

    C# 44 12

  3. c-questdb-client c-questdb-client Public

    The official Rust, C and C++ client for QuestDB

    Rust 75 29

  4. go-questdb-client go-questdb-client Public

    The official Golang client for QuestDB

    Go 71 12

  5. py-questdb-client py-questdb-client Public

    The official Python client for QuestDB

    Python 71 15

  6. nodejs-questdb-client nodejs-questdb-client Public

    The official Node.js client for QuestDB

    TypeScript 48 12

Repositories

Showing 10 of 78 repositories
  • questdb Public

    QuestDB is a high performance, open-source, time-series database

    questdb/questdb's past year of commit activity
    Java 17,378 Apache-2.0 1,654 805 (10 issues need help) 184 Updated Sep 29, 2026
  • ui Public

    QuestDB Web Console

    questdb/ui's past year of commit activity
    TypeScript 29 39 41 (2 issues need help) 6 Updated Sep 29, 2026
  • py-questdb-client Public

    The official Python client for QuestDB

    questdb/py-questdb-client's past year of commit activity
    Python 71 Apache-2.0 15 23 (1 issue needs help) 6 Updated Sep 29, 2026
  • go-questdb-client Public

    The official Golang client for QuestDB

    questdb/go-questdb-client's past year of commit activity
    Go 71 Apache-2.0 12 4 1 Updated Sep 29, 2026
  • nodejs-questdb-client Public

    The official Node.js client for QuestDB

    questdb/nodejs-questdb-client's past year of commit activity
    TypeScript 48 Apache-2.0 12 4 1 Updated Sep 29, 2026
  • questdb_java_ha_sender Public

    HA ILP Sender for QuestDB for demo purposes

    questdb/questdb_java_ha_sender's past year of commit activity
    Java 1 Apache-2.0 0 0 1 Updated Sep 29, 2026
  • c-questdb-client Public

    The official Rust, C and C++ client for QuestDB

    questdb/c-questdb-client's past year of commit activity
    Rust 75 Apache-2.0 29 16 17 Updated Sep 29, 2026
  • documentation Public

    QuestDB documentation

    questdb/documentation's past year of commit activity
    TypeScript 13 Apache-2.0 45 13 32 Updated Sep 29, 2026
  • mcp-server-questdb Public

    QuestDB MCP server connects coding agents to a running QuestDB Web Console. The agent gets tools to create notebook cells, run queries, and build charts.

    questdb/mcp-server-questdb's past year of commit activity
    TypeScript 2 Apache-2.0 2 0 0 Updated Sep 29, 2026
  • sql-parser Public
    questdb/sql-parser's past year of commit activity
    TypeScript 0 Apache-2.0 0 0 5 Updated Sep 25, 2026