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Spring Boot Configuration Best Practices

Programming Spring
Spring Boot comes with very neat configuration mechanism. Default application configuration is defined in one configuration file and environment specific setting in separate files. But still, this mechanism is often not used properly resulting in verbose and unmaintainable configurations.

Building Data Pipeline with Kotlin Coroutines Actors

Programming Kotlin Coroutines
This blog post demonstrates how to build a data processing pipeline using Kotlin coroutines and actors, showing both single-threaded and parallel implementations. It walks through creating a simple data pipeline using Kotlin’s channel and actor abstractions for clean concurrent programming. The post includes practical code examples of handling message passing between actors, managing thread pools, implementing back-pressure, and scaling from a basic sequential pipeline to a parallel version that processes data more efficiently. The explanation is backed by detailed logging output that illustrates how messages flow through the system and how parallel processing improves overall performance.

How Does New Oracle JVM Licensing Encourage Agility

Project Management Sdlc
Oracle’s revised JDK policy requires companies to update Java every 6 months to maintain free security patches, since only short-term OpenJDK builds remain free for production use. This pushes organizations to automate testing and embrace more frequent deployments, as manual testing of bi-annual updates would be too costly. The article suggests this change naturally leads companies toward shorter release cycles and faster market adaptation.

Common Java Application Anti-patterns and Their Solutions

Programming Project Management Software Architecture Web Services Sdlc
Software projects often run into trouble when developers mix different code layers together. The article explains how this leads to rigid, brittle code that’s hard to update and reuse. Software architecture problems are examined through biological cell analogies. A practical guide follows for improving existing systems without full rewrites, focusing on testing, API design, and gradual changes.

Customizing REST API Error Response in Spring Boot / Spring-Security-OAuth2

Programming Java Spring Swagger Web Services Rest-Api Kotlin

Defining error format is important part of REST API design.

Spring-Boot and Spring Security provide pretty nice error handling for RESTful APIs out of the box. Although it has to be documented, especially when contract-first approach to API design is used.

It is good idea to follow some common format for error responses. But OAuth2 specification and Spring Boot format may not satisfy those requirements.

External Site Monitoring

Devops Web

How did you know that your site is down? From your customers? Then it’s time to start using some external monitoring tool.

Logging Policy

Programming Devops Security Logging

There are different points of view on how logging levels should be used in code. I will share mine.

My assumption is: “There should be no errors in logs when everything is fine.”