QuestDB
QuestDB is a low-latency time-series database on open formats, with an open source Apache 2.0 core.
Last updated September 11, 2026
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Overview
QuestDB is a time-series database with an open source Apache 2.0 core, founded in 2019, with headquarters in London and New York. It ingests millions of events per second, computes on live data in milliseconds, and keeps years of history queryable through one SQL engine spanning messaging, stream processing, and tiered storage. QuestDB Enterprise is used by customers including B3 and Brevan Howard for capital markets workloads.
History
QuestDB was founded in 2019 and has an open source Apache 2.0 core. Vlad Ilyushchenko started building QuestDB as a side project in 2014 to fix time-series performance limits he kept hitting on electronic-trading desks, and open-sourced it at the end of 2019. The company is headquartered in London and New York.
Products and positioning
Low-latency time-series database on open formats; one SQL engine spanning messaging, stream processing, and tiered storage.
QuestDB Enterprise
Enterprise offering for critical data workloads.
Bring Your Own Cloud (BYOC)
Managed QuestDB running on the customer's own AWS or Azure account, with data residing in the customer's account and fully managed by the QuestDB team 24/7.
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