I Can See Clearly Now: Observability of JVM & Spring Boot 2-3-4 apps @ Spring I/O 2026

Spring I/O 2026 - 14-15 April, Barcelona Speakers: Jonatan Ivanov / Tommy Ludwig Slides: https://speakerdeck.com/jonatan_ivano... Repo: https://github.com/jonatan-ivanov/tea... Are you running applications in production? Are they behaving like gremlins after midnight? Do your logs disappear faster than free coffee at a tech conference? Welcome to the world of software, where we try to make sense of the chaos without losing our remaining brain cells. Join us on this example-driven journey where we go through how to make your new or existing Java/JVM/Spring Boot applications observable and explore the toolsets available for you today to instrument your application so that it can tell you what it is doing and why. We will explore how to instrument your JVM-based application without vendor lock-in using Micrometer, OpenTelemetry, Grafana, OpenZipkin, Prometheus, OpenMetrics, etc, so you can have a much better understanding of what is going on inside of your app. Expect live demos, questionable diagrams, and at least one picture of a cat trying to debug an HTTP 500 error. Whether you are a seasoned observability wizard or still wondering what a “span” is, this talk will give you practical tools. Bring your questions and logs, we’ve got dashboards and emotional support.