Logging Considered Harmful? & OpenTelemetry for Java

Agenda:

18:00 doors open
18:30 Talk 1: Logging Considered Harmful? (Sebastian Daschner EN
19:30 Break with Pizza
20:00 Talk 2: OpenTelemetry for Java (Philipp Krenn EN)

Logging considered harmful?
One thing that enterprise Java applications have in common, regardless of their framework, is that they produce logs — allegedly human-readable lines of strings that aim to help us to debug, trace, or otherwise inspect what’s going on. The question is, how useful are these logs and do they help us solve problems that actually happen, and whether there are better alternatives for the average developer.
In this talk we'll see the shortcomings that logging brings, with regards to performance, dependencies, log formats, and helpfulness. We'll try to get a feeling for the impact logging has, why developers do use logging in the first place, and what alternatives and conclusions are there.

Sebastian Daschner is a self-employed Java consultant, author and trainer and is enthusiastic about programming and Java. He is the author of the book “Architecting Modern Java EE Applications”. Sebastian is participating in open source standardization processes such as the JCP or the Eclipse Foundation, helping forming the future standards of Enterprise Java, and collaborating on various open source projects. For his contributions in the Java community and ecosystem he was recognized as a Java Champion, Oracle Developer Champion, and JavaOne Rockstar. Besides Java, Sebastian is a heavy user of cloud native technologies and anything related to enterprise software. Sebastian evangelizes computer science practices on https://blog.sebastian-daschner.com, in his newsletter, podcast, and videos, and on Twitter via @DaschnerS. Sebastian kickstarted the JOnsen and jSpirit unconferences that connect Java developers throughout the globe. When not working with technology, he also loves coffee and to travel the world.

OpenTelemetry for Java (Philipp Krenn, EN)
OpenTelemetry is the hot new standard for getting telemetry data from your Java applications (and others). This talk covers three areas:

• Standards: OpenTracing, W3C Trace-Context, and OpenTelemetry
• Signals: Both what (traces, metrics, logs) and how (instrumentation, OTLP)
• Demo: Making it work and where the boundary is between OpenTelemetry and vendors

Philipp lives to demo interesting technology. Having worked as a web, infrastructure, and database engineer for over ten years, Philipp is now a developer advocate and EMEA team lead at Elastic — the company behind the Elastic Stack consisting of Elasticsearch, Kibana, Beats, and Logstash. Based in Vienna, Austria, he is constantly traveling Europe and beyond to speak and discuss open source software, search, databases, infrastructure, and security.