👁 Banner with illustration of QuestDB, the open source time series database

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:

• Interact with our live demo instance which includes 3 datasets:

  • Market data ingested in real-time from the Coinbase API
  • FX orderbook data
  • NYC taxi trips dataset (1.6 billion rows)
  • Real-time market data dashboards
  • Real-time FX orderbook dashboards

• Read the docs to get started.

  • Try our quick-start.

Join our active public Slack and our community forum

See our public roadmap at public roadmap.

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.

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:

• Core Database Engineer