Logging, Tracing, and Metrics for Observability
This chapter is about logging, tracing, and monitoring with metrics, which are known as the pillars of observability.
Logging is the practice of recording events that happen within a system. Logs provide detailed information about system behavior, helping developers understand what went wrong and how to fix it. Logs can also track user actions, helping in understanding user behavior, which can help when debugging an issue. Logs also serve as a historical record of what has happened in the system, which is important for security audits and compliance.
Tracing involves following the flow of a request through the various components of a system. It helps pinpoint where and why a problem occurred, making it easier to diagnose and fix issues.
Metrics are numerical data points that measure various aspects of system performance and behavior. By collecting metrics over time, you can identify trends and patterns that may indicate underlying...