This is the fourth entry to the series for the January 2021 online conferences which I have attended. I will have one last entry for the sessions which I have watched offline.

Victor Rentea - The Definitive Guide to Working with Exceptions in Java

In a nutshell: use RuntimeException, handle those properly: enum for error codes, the management of error messages depending on the locale in the backend of the requester is pretty cool.

Rafael Winterhalter - Tracing Distributed Microservices

What happens when one wants to monitor distributed microservices? Tracing is assigning an id for a given request and this talk suggests an implementation of Application Performance Monitoring.