#6262nd of 173 in Backends, databases and hosting
questdb
Time-series SQL database for high-rate ingestion and queries over live and historical data
Live demo ↗
(opens in a new tab)Documentation ↗
(opens in a new tab)Website ↗
(opens in a new tab)Repository on GitHub ↗
(opens in a new tab)
- Stars
- 17.5k
- License
- Apache-2.0
- Last commit
- Nov 2026
- Last release
- Nov 2026
- Language
- Java
Missed the latest GitHub check; these facts may be older.
Overview
QuestDB is a time-series database written in zero-GC Java with C++ and Rust on the hot paths. It stores data in time-partitioned columns, with Parquet conversion for older partitions. SQL extends the standard with SAMPLE BY, LATEST ON and ASOF JOIN, and clients write and read over its binary QWP protocol, PostgreSQL wire (8812), ILP or REST (9000).
Who it is for: Engineers storing tick, telemetry or metrics data who need fast time-series SQL
Strengths
- Reports 8.59M rows/sec TSBS ingestion on one 32 vCPU instance, ahead of ClickHouse and TimescaleDB
- Speaks QWP, PostgreSQL wire, InfluxDB Line Protocol and REST, so existing drivers and collectors work
- Time-series SQL built in: SAMPLE BY, ASOF JOIN, materialized views, deduplication and out-of-order handling
- Web Console with SQL editor, charts and CSV import on port 9000, plus a public live demo
Weaknesses
- Replication, high availability, RBAC, TLS, SSO and automatic object-storage tiering are Enterprise only
- Open source needs manual ALTER TABLE to convert partitions to Parquet
- Native libraries bundled for Apple Silicon only; Intel Macs must use Docker
- Live views are in beta, and the Node.js client lacks QWP support for now
What it needs
- no GPU
- port 9000
Also in Backends, databases and hosting
See all 173| Rank | Project | Score |
|---|---|---|
| 1 | bunJavaScript and TypeScript runtime with bundler, test runner and package manager | 93 out of 100 |
| 2 | traefikHTTP reverse proxy and load balancer that auto-discovers routes from orchestrators | 93 out of 100 |
| 3 | appwriteBackend with auth, databases, storage, functions and an MCP server for agents | 93 out of 100 |
| #4 | ormTypeScript ORM for PostgreSQL and MongoDB with a plugin SPI and agent skills | 93 out of 100 |
| #5 | strapiHeadless CMS that generates REST and GraphQL APIs from content models | 92 out of 100 |