#26
A
Rank #24
Alertmanager
The alert routing, deduplication, grouping, and silencing component of the Prometheus ecosystem. Standout trait is gossip-based clustering for high availability with no external database dependency.
80.0
/ 100
⚙ Full Stack
Single Go binary with an embedded gossip protocol (memberlist) for peer-to-peer clustering, local snapshot files for state persistence, and a simple built-in web UI.
📈 Scaling Analysis
Because Alertmanager treats alert state as ephemeral/replicated via gossip rather than owning a durable database, it scales out cleanly for HA with no shared storage bottleneck — the tradeoff is that state is a routing cache, not a system of record.
🚀 Running on Nexlayer
Deploy as 1-3 alertmanager pods forming a gossip cluster (peer addresses as <podName>.pod:9094); Prometheus reaches it at alertmanager.pod:9093. Official image is Docker Hub library (prom/alertmanager) — mirror via mirror.gcr.io.