Federated Monitor
A Federated Monitor is a decentralized monitoring architecture where multiple, independent monitoring agents or nodes operate across various distributed systems. Instead of funneling all telemetry data to a single central point for processing, the system allows for localized monitoring and aggregation, with a higher-level coordinator overseeing the overall health and performance across the federation.
In modern, microservices-based, or geographically distributed cloud environments, a single point of failure for monitoring is unacceptable. A Federated Monitor addresses this by enhancing resilience and reducing latency. It allows teams to maintain granular control over local data while still providing a unified, high-level view of the entire ecosystem's operational status.
The process involves several key components. Local monitoring agents collect metrics, logs, and traces from their specific service or cluster. These agents perform initial filtering and aggregation locally. Periodically, or upon trigger, they securely transmit summarized data or alerts to a federated coordinator. This coordinator doesn't necessarily store all raw data; rather, it aggregates the summarized reports to provide a holistic dashboard view, enabling cross-system correlation without massive data transfer overhead.
This concept overlaps with Distributed Tracing, which focuses on tracking a single request across services, and Observability, which is the overarching goal of understanding system state through metrics, logs, and traces.
