Involves tracking key metrics and logs from applications, infrastructure and networks to monitor performance, diagnose issues and optimize resources.

Key Concepts

• Metrics:
  • CPU and Memory Usage
  • Response Time
  • Error Rates
  • Request Rates
  • Throughput
• Logs:
  • Error Logs
  • Access Logs
  • Debug Logs
• Traces: Records of the execution path through a system, especially in microservices or distributed architectures. Helps find time spent, bottlenecks and where failures occur.
• Events: One time occurrences, like Deployments, System Alerts, State Changes.

Best Practices for Effective Telemetry

1. Identify the most important metrics that correlate with system health, user satisfaction and business goals (Key Metrics and Key Performance Indicators, KPIs)
2. Add tracing and logging for critical functions
3. Set Thresholds and Alerts
4. Automate Data Collection
5. Aggregate Data for when large volume exists
6. Ensure Data security
7. Correlate Data from Multiple Sources