QuestDB
High-performance open-source time-series database for demanding workloads
Founded
2019
Starting Price
0
Category
Developer Tools
Last updated March 12, 2026
About QuestDB
QuestDB is an open-source, high-performance time-series database built from scratch for demanding workloads like financial trading, IoT, and infrastructure monitoring. It delivers ultra-low latency queries via standard SQL, supports nanosecond timestamps, and can ingest up to 4 million rows per second per instance.
Pros & Cons
Pros
- Exceptional ingestion speed of up to 4 million rows per second
- Blazing fast query performance with sub-500ms group-by queries on large datasets
- Standard SQL interface reduces learning curve compared to proprietary query languages
- Open-source core with no vendor lock-in and Apache Parquet portability
- Easy to deploy with good documentation and straightforward setup
Key Features
High-Speed Data Ingestion
Ingest up to 4 million rows per second per instance with minimal latency
SQL Query Engine
Query years of historical time-series data in milliseconds using standard SQL
Nanosecond Timestamps
Native support for nanosecond-precision timestamps for financial and scientific data
ASOF Joins
Time-series specific join operations for correlating data across different time intervals
Materialized Views
Pre-computed query results that update automatically for faster analytical queries
Apache Parquet Support
Native read/write support for Parquet format keeping data portable and AI-ready
Multi-Tier Storage Engine
Automatically manages data across hot and cold storage tiers for cost optimization
Pricing
Open Source
0/month
- Full SQL query engine
- High-performance ingestion
- Web console UI
- Community support
- Apache Parquet support
Best For
Financial Market Data
Store and analyze tick data, trades, order books, and OHLC data with nanosecond precision timestamps and ASOF joins
IoT Sensor Monitoring
Ingest millions of sensor readings per second and run real-time analytical queries for anomaly detection
Infrastructure Observability
Collect and query metrics, logs, and traces from servers and applications with low-latency dashboards
Real-Time Analytics
Power live dashboards and materialized views over streaming time-series data for operational intelligence
