Prometheus vs VictoriaMetrics
A side-by-side comparison of two self-hosted monitoring & status options — licensing, setup difficulty, resource needs, and what each one replaces.
Prometheus
Metrics-based monitoring and alerting toolkit
VS
VictoriaMetrics
Fast, cost-effective time series database and monitoring solution
| Feature | Prometheus | VictoriaMetrics |
|---|---|---|
| Deploy effort | ≈5-minute setup | Under-an-hour setup |
| Health score | 100 · Excellent | 95 · Excellent |
| Category | Monitoring & Status | Monitoring & Status |
| License | Apache-2.0 | Apache-2.0 |
| Language | Go | Go |
| Setup difficulty | Medium | Medium |
| Min. RAM | 512 MB | 256 MB |
| Deployment | docker, binary, helm | docker, kubernetes, helm |
| GitHub stars | ★ 66,196 | ★ 17,760 |
| First released | 2015 | 2018 |
| Replaces | Datadog | Datadog, Grafana Cloud |
What are Prometheus and VictoriaMetrics?
Prometheus
Prometheus is a metrics-based monitoring system and time-series database with a powerful query language and alerting. It targets engineers monitoring cloud-native infrastructure. It is deployed via Docker, binaries, or Helm.
- Pull-based metrics collection
- PromQL query language
- Built-in alerting rules
- Cloud-native standard
VictoriaMetrics
VictoriaMetrics is a fast, cost-effective, and scalable monitoring solution and time series database. It is a drop-in replacement for Prometheus storage with lower resource usage and a high-performance query engine.
- Low memory footprint
- MetricsQL query language
- Single-binary or cluster mode
- Prometheus-compatible
Prometheus vs VictoriaMetrics: key differences
Both projects are written in Go. VictoriaMetrics is the lighter option, starting around 256 MB of RAM against 512 MB for Prometheus. Prometheus is the more established project (first released 2015), while VictoriaMetrics arrived in 2018. Prometheus has the considerably larger community, at 66,196 GitHub stars versus 17,760.
Why pick each one
Choose Prometheus if…
- Powerful query language
- Reliable and scalable
- Huge ecosystem
Watch out for
- No long-term storage by default
- Dashboards need Grafana
Choose VictoriaMetrics if…
- Excellent compression and speed
- Easy single-binary deployment
Watch out for
- MetricsQL differs slightly from PromQL
- Smaller ecosystem than Prometheus
Frequently asked questions
Is Prometheus or VictoriaMetrics better?
Neither is universally better. Prometheus has the larger community; both share a medium setup difficulty, so the decision comes down to features and licensing.
Are Prometheus and VictoriaMetrics free and open-source?
Yes. Prometheus is licensed under Apache-2.0 and VictoriaMetrics under Apache-2.0. Both can be self-hosted at no software cost.
Can I run Prometheus and VictoriaMetrics with Docker?
Prometheus: yes. VictoriaMetrics: yes.
Which is lighter on resources, Prometheus or VictoriaMetrics?
VictoriaMetrics has the smaller minimum footprint at 256 MB of RAM, compared to about 512 MB for Prometheus. Real-world usage depends on library size, user count, and enabled features.