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Disclaimer: Star Stack provides information about European technology services for educational purposes only. Service listings, sovereignty assessments, and recommendations do not constitute legal, financial, or professional advice. We encourage you to verify all information independently and consult appropriate professionals before making technology decisions. Star Stack is not affiliated with any listed services unless explicitly stated.

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QuestDB | Star Stack

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QuestDB

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QuestDB

Name: QuestDB
Author: Star Stack

Open-source time-series database with native SQL and Parquet support

Databases (Time-series)

Visit Website GitHub 17.4K

About

QuestDB is an open-source time-series database that ingests data at high speed and executes SQL queries with low latency. It supports standard SQL, Apache Parquet, and the PostgreSQL wire protocol to avoid vendor lock-in.

Resources

No migration guide is currently listed for this service.

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Sovereignty Score

Recorded assessment version: jurisdiction-ownership-2026-10-04

out of 100

Data completeness50% (Partial)

Jurisdictional(56%)

Significant foreign legal exposure risk

Jurisdiction: United States (EU adequacy decision)
No foreign parent provider
Five Eyes intelligence alliance exposure
US CLOUD Act applies (US can compel data access regardless of storage location)

Ownership(44%)

Partial ownership data, some foreign influence possible

EU venture capital funded
Funding: Insight Partners, Y Combinator - London, UK
Series A funding
Acquisition risk unknown (assumed high) (Submit verified data to improve this score)

More dimensions coming soon

GovernanceComing soon

PortabilityComing soon

LicenseComing soon

CommunityComing soon

How missing data affects scores Submit data corrections

Provider

QuestDB Technology Inc.

Quick Facts

Legal jurisdiction: United States
Headquarters: United Kingdom
Ownership: EU VC-Backed
License: Apache-2.0
Deployment: Self-host
Funding: Insight Partners, Y Combinator - London, UK

Evidence and freshness

Verification date unknown. This assessment needs review.

A score is an assessment of recorded facts. Missing evidence and unresolved ownership can affect the result.

No field-level sources recorded for this service.