Explore key insights and practical knowledge gained from operating Prometheus in this comprehensive conference talk by Red Hat experts Lili Cosic and Frederic Branczyk. Delve into the fundamentals of Prometheus, including its server architecture, metadata handling, and alerting capabilities. Discover why Prometheus has gained popularity and examine its simplicity as a single binary with strict rules. Gain a deeper understanding of Prometheus' inner workings, including time series databases, queries, memory usage, and series compression techniques. Learn about resource management, the pull model, retention policies, and target discovery. Analyze scalability considerations and predictability in Prometheus deployments. Explore Prometheus as a platform, its integration with Kubernetes, and how to leverage the broader ecosystem. Conclude with valuable insights and a Q&A session to enhance your Prometheus expertise.