This article was originally published on AI Study Room . For the full version with working code examples and related articles, visit the original post. Metric Collection Metric Collection Metric Collection Metric Collection Metric Collection Metric Collection Metric Collection Metric collection is the practice of gathering numerical measurements from applications and infrastructure. Metrics provide insight into system health, performance, and usage patterns. This article covers the three main collection approaches—agent-based, pull-based, and push-based—along with cardinality management and best practices. Metric Types Metrics fall into several categories. System metrics measure infrastructure: CPU usage, memory consumption, disk I/O, network traffic. Application metrics measure software behavior: request rate, error rate, response time, queue depth. Business metrics measure business outcomes: orders per minute, active users, revenue.…