Infra & metrics
QuestDB
QuestDB
Columnar, very-high-throughput SQL time-series DB for finance/IoT/ad-tech — and a fast store for infra metrics if you wire it behind Prometheus.
- Category
- Infra & metrics
- License
- Open core
- Deployment
- SaaS or self-hosted
- Cost
- Low
- Free tier
- Yes
- Self-host effort
- Moderate
- Maturity
- Established
- Popularity
- ≈17k GitHub stars
The catch
It's a raw-performance database, not a monitoring product — no agents, dashboards or alerting, so for infra you still bolt on Prometheus/Grafana; HA is paid-tier.
Monitors
MetricsServers
Built for
Developers