observabilitykäytäntöihin

Observability refers to the ability to understand the internal state of a system by examining its external outputs. In the context of software and distributed systems, observability goes beyond traditional monitoring. While monitoring alerts on known issues, observability aims to provide the necessary data to understand the system's behavior, even for problems that were not anticipated. This is achieved by collecting and analyzing telemetry data, which typically includes logs, metrics, and traces. Logs provide detailed, event-based records. Metrics are numerical measurements of system performance over time. Traces capture the end-to-end journey of a request as it travels through various services. By correlating these different data sources, engineers can gain deep insights into system performance, diagnose errors, and optimize operations. The goal is to reduce the time it takes to detect and resolve issues, improving system reliability and user experience. Observability is particularly crucial in complex, microservice-based architectures where understanding the interaction between many independent components is essential. It empowers teams to ask new questions about their systems and get answers without needing to redeploy or add new instrumentation.