Sorted:

Tracking request duration with Prometheus

Grafana Alerts on Spring Boot App

Testing Private Methods with JUnit

Guide to JUnit 5 Parameterized Tests

Hungarian Method : Perfect Matching – Min Cost

Matching on Bipartite Graphs: Hopcroft Karp Algo.

Spring Boot : How to add JPA and Hibernate Envers Auditing

OpenTelemetry with Java Guide

Maximum Flow: Augmenting Path Algorithms Comparison

Javadoc Cheatsheet