How iHeartRadio monitors Docker performance

iHeartRadio, a streaming music and digital radio platform, uses Docker to isolate dependencies and resource usage of applications from each other. However, monitoring Docker performance can be challenging due to the lack of visibility into container-level resource consumption. To overcome this issue, iHeartRadio uses Datadog for infrastructure monitoring, which collects CPU, memory, I/O, and network metrics from each Docker container and aggregates metrics by any tag or tags. This allows them to monitor service-level metrics by aggregating by Docker image. Additionally, they use Datadog to monitor non-Docker services such as HAProxy, MongoDB, and Elasticsearch, which helps in correlating Docker performance metrics with health and performance throughout their infrastructure.