# QuestDB

> Low-latency time-series database on open formats

- **Canonical URI:** https://www.vioscale.ai/software/questdb
- **Category:** Time-Series Databases
- **Homepage:** https://questdb.io
- **Also known as:** questdb
- **Profile claimed by vendor:** no
- **Last updated:** 2026-08-01T21:34:12.550Z

## Vioscale score

**51.2 / 100**, confidence 42% (low).

Composite of weighted, independently-sourced signals (no user reviews, no vendor payment).

| Signal | Score | Weight | Contribution | Evidence present |
|---|--:|--:|--:|:--:|
| price_level | 80 | 6 | 480 | ✓ |
| reliability | 45 | 10 | 450 | ✓ |
| capabilities | 28.9 | 17 | 491.4 | ✓ |
| github_stars | 79.9 | 7 | 559.4 | ✓ |
| integrations | 0 | 8 | 0 | - |
| github_activity | 52 | 20 | 1040.9 | ✓ |
| release_cadence | 90 | 12 | 1080 | ✓ |
| security_posture | 40 | 18 | 720 | ✓ |
| package_downloads | 0 | 6 | 0 | - |
| pricing_transparency | 25 | 8 | 200 | ✓ |
| stackoverflow_activity | 0 | 20 | 0 | - |

## Pricing

_As of 2026-08-01, [verify at source](https://questdb.io). Independently observed._

Quote-based · Free tier

> Open source is free; QuestDB Enterprise available by contact

## About

QuestDB is an open-source time-series database engineered for low latency, delivering ultra-low latency ingestion, high throughput, and multi-tier storage for demanding time-series workloads.

_Independently observed._

## Platform & deployment

- **Platforms:** Web
- **Deployment:** Cloud / SaaS, Hybrid, On-premise, Self-hosted

## Capabilities

_The capabilities that matter for Time-Series Databases. "-" = undocumented, not absent._

| Capability | Supported |
|---|:--:|
| **Query** | |
| Query language (SQL / PromQL / InfluxQL-Flux / Graphite) | SQL |
| **Ingest** | |
| Ingest model | Both |
| **Model** | |
| Data model | Wide events |
| **Lifecycle** | |
| Downsampling / rollups | Continuous aggregates |
| **Storage** | |
| Compression (columnar / delta / Gorilla) | columnar with Parquet support |
| **Performance** | |
| High-cardinality handling | Strong |
| **Scale** | |
| Clustering / horizontal scale | Distributed / sharded |
| Replication / HA | ✓ |
| **Deployment** | |
| Deployment | Self-hosted |
| **Lifecycle** | |
| Retention / TTL | - |
| **Query** | |
| SQL compatibility | Full SQL |
| **Interop** | |
| Prometheus remote-write compatible | - |
| **Licensing** | |
| Licence class | Permissive OSS |

## Facts

Every value below carries its source and our confidence. Facts are re-crawled on a freshness schedule.

### activity

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| activity.commits_last_30d | 44 | [link](https://github.com/questdb/questdb/pulse) | 2026-08-01 | 65% (medium) |

### adoption

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| adoption.github_stars | 17,221 | [link](https://github.com/questdb/questdb) | 2026-08-01 | 90% (high) |

### language

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| language.primary | Java | [link](https://github.com/questdb/questdb) | 2026-08-01 | 90% (high) |

### license

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| license.spdx | Apache-2.0 | [link](https://github.com/questdb/questdb) | 2026-08-01 | 95% (high) |

### pricing

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| pricing.free_tier | yes | [link](https://questdb.io) | 2026-08-01 | 60% (medium) |
| pricing.model | commercial | [link](https://questdb.io) | 2026-08-01 | 48% (low) |
| pricing.price_level | low | [link](https://questdb.io) | 2026-08-01 | 60% (medium) |
| pricing.transparent | no | [link](https://questdb.io) | 2026-08-01 | 60% (medium) |

### release

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| release.cadence_days | 18 | [link](https://github.com/questdb/questdb/releases) | 2026-08-01 | 70% (medium) |

### reliability

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| reliability.sla_pct | 99.9 | [link](https://questdb.io/sla) | 2026-08-01 | 60% (medium) |

### security

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| security.soc2 | yes | [link](https://questdb.io) | 2026-08-01 | 48% (low) |

---
*Source: Vioscale (https://www.vioscale.ai/software/questdb). Independent, evidence-based software intelligence. Cite the canonical URI.*