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QuestDB
QuestDB · London and New York · founded 2019
What it is
QuestDB is a time-series database designed for mission-critical environments where low latency matters. It provides standard SQL through a vectorized execution engine, with time-series extensions including SAMPLE BY, ASOF, and HORIZON JOIN. QuestDB advertises ingestion speeds of 8M+ rows per second. Its free, self-managed Open Source edition is available as binaries, containers, and source code, and supports Parquet storage and PostgreSQL Wire Protocol compatibility. Ingestion options include QuestDB Wire Protocol, InfluxDB Line Protocol, REST API, native client libraries, SQL INSERT, Kafka connector, and CSV import. Listed integrations include Grafana, Power BI, Apache Kafka, Telegraf, Redpanda, Apache Flink, Pandas, and Apache Spark. The free Enterprise trial has no stated duration. QuestDB lists Linux, macOS, Windows, web, API, and self-hosted platforms. The site states that the product is SOC 2 Type 2 compliant.
For and against
For
- Free Open Source plan at no cost
- Advertised ingestion speeds of 8M+ rows per second
- SQL plus time-series query extensions
- Supports Parquet and PostgreSQL Wire Protocol compatibility
- Enterprise includes replication and automatic failover
Against
- Open Source is limited to a single instance
- Open Source authentication uses unencrypted transmission
The verdict
QuestDB pairs SQL with time-series querying and several ingestion options, with a free self-managed edition for single-instance use.
Who it suits
QuestDB may suit teams handling time-series data in low-latency settings, including capital-markets firms, digital-asset businesses, energy operators, aerospace companies, and robotics firms. Open Source is for self-managed use; Enterprise adds security controls, availability features, and dedicated support with response-time SLAs.
Plans and prices
QuestDB Open Source
Apache 2.0 core · self-managed · single instance · community support
Read 30 Sep 2026 · questdb.com
QuestDB Enterprise
Production deployments · replication and failover · RBAC, TLS and SSO · tiered storage
Read 30 Sep 2026 · questdb.com
On the record
- Audience
- QuestDB says its users include capital-markets firms, digital-asset businesses, energy operators, aerospace companies, and robotics firms.questdb.com · read 30 Sep 2026
- Availability
- QuestDB Enterprise advertises replication, automatic failover, and a 99.9% uptime guarantee.questdb.com · read 30 Sep 2026
- Compliance
- QuestDB's site states that it is SOC 2 Type 2 compliant.questdb.com · read 30 Sep 2026
- Data formats
- QuestDB supports Parquet storage and PostgreSQL Wire Protocol compatibility with existing tools and drivers.questdb.com · read 30 Sep 2026
- Deployment
- QuestDB Open Source is self-managed and is available as binaries, containers, and source code.questdb.com · read 30 Sep 2026
- Enterprise security
- QuestDB Enterprise offers TLS encryption, role-based access control, audit logs, and single sign-on through OAuth 2.0/OIDC.questdb.com · read 30 Sep 2026
- Ingestion
- QuestDB advertises ingestion speeds of 8M+ rows per second.questdb.com · read 30 Sep 2026
- Integrations
- QuestDB lists Grafana, Power BI, Apache Kafka, Telegraf, Redpanda, Apache Flink, Pandas, and Apache Spark among its integrations.questdb.com · read 30 Sep 2026
- Open source security limit
- The Enterprise comparison says Open Source provides basic authentication over unencrypted transmission.questdb.com · read 30 Sep 2026
- Product
- QuestDB is a time-series database for mission-critical environments where low latency matters.questdb.com · read 30 Sep 2026
- Querying
- QuestDB provides a vectorized execution engine, standard SQL, and time-series extensions including SAMPLE BY, ASOF, and HORIZON JOIN.questdb.com · read 30 Sep 2026
- SQL support
- Yesquestdb.com · read 22 Sep 2026
- Storage
- Enterprise supports hot storage plus Parquet and Iceberg tables on object storage, including Amazon S3, Azure Blob, and GCS.questdb.com · read 30 Sep 2026
- Support
- Enterprise includes dedicated access to QuestDB engineers and guaranteed response-time SLAs; Open Source has community support.questdb.com · read 30 Sep 2026
- Trial
- QuestDB offers a free Enterprise trial, but the page does not state its duration.questdb.com · read 30 Sep 2026
