riemann/riemann

Health v2 · maintenance only

Adoption not part of the score

4268 stars · 503 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

Riemann is a network event stream processing system written in Clojure that aggregates events from servers and applications. It provides a powerful stream processing language for filtering, combining, and acting on events, with low-latency shared state and alerting via email, SMS, and phone.

Use cases

• aggregate metrics and events from distributed servers
• send email alerts for application exceptions
• track latency distributions of web apps
• monitor CPU and memory of top processes across hosts
• forward cluster statistics to Graphite
• build dashboards showing system health at a glance

When to choose

• you need low-latency event stream processing for monitoring distributed systems
• you want configuration-as-code with a flexible, expressive stream language
• you need throttled or rolled-up alerts from many event sources

When to avoid

• you want a turnkey monitoring solution with minimal configuration
• your team is not comfortable with Clojure-based configuration
• you need long-term metric storage rather than transient state

Facets

service · maturity stable

monitoring alerting streaming logging analytics monitoring microservices infrastructure-as-code jvm self-hosted event-stream-processing metrics clojure time-series alerting dashboards devops linux web-server

Member repositories

For agents

markdown · JSON · MCP: product_card(name="riemann/riemann")