Prometheus
Open SourceFrom metrics to insight.
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About
Prometheus is an open-source monitoring and alerting toolkit originally built at SoundCloud. It collects and stores metrics as time series data, with metric name and key/value pairs as labels. Prometheus features a powerful multi-dimensional data model, a flexible query language (PromQL), and integrated alerting. It uses a pull-based model for scraping metrics from HTTP endpoints, making it ideal for Kubernetes and microservices architectures. As a CNCF graduated project, Prometheus has become the de facto standard for cloud-native monitoring, with hundreds of exporters available for various services and systems.
Key Features
- Multi-dimensional data model with time series data
- PromQL query language for flexible querying
- Pull-based metric collection via HTTP
- Service discovery for dynamic environments
- Built-in alerting with Alertmanager
- Hundreds of exporters and integrations
- Grafana integration for visualization
Pros
- Completely free and open source
- Industry standard for Kubernetes monitoring
- Powerful query language
- Excellent ecosystem and integrations
- Reliable and battle-tested
- No vendor lock-in
Cons
- Long-term storage requires additional setup
- Learning curve for PromQL
- Not ideal for high-cardinality data
- Limited dashboarding (requires Grafana)
- Setup and maintenance requires operational effort
Pricing
Open SourcePossible Stacks
Advanced API (Go)
ProjectA high-performance API stack for advanced engineers. Go handles concurrency, PostgreSQL + Redis back the data layer, Kubernetes orchestrates containers, and Prometheus + Grafana provide observability.
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