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My Senior Dev Spotted the Bug in 5 Seconds. I Missed It for Weeks.

A tiny mistake, a painful lesson, and the moment I truly understood senior developers. Continue reading on Javarevisited » This post first appeared on Read…

Read MoreMy Senior Dev Spotted the Bug in 5 Seconds. I Missed It for Weeks.

Your Java Objects Are Too Smart: The Case for Data-Oriented Programming

I worked extensively with classic Java Object Oriented Programming: service layers, deep hierarchies and ‘smart’ domain objects. It worked… Continue reading on Javarevisited » This…

Read MoreYour Java Objects Are Too Smart: The Case for Data-Oriented Programming

Spring Security 7 Adds Multi Factor Authentication (MFA)

Spring Security 7 finally stops pretending. Continue reading on Javarevisited » This post first appeared on Read More

Read MoreSpring Security 7 Adds Multi Factor Authentication (MFA)

I Tried 15+ Machine Learning Courses on Udemy — Here Are My Top 5 Recommendations

I Tried 15+ Machine Learning Courses on Udemy — Here Are My Top 5 Recommendations These are the best Udemy courses to learn Machine Learning in 2026 credit — Paul Iustzin…

Read MoreI Tried 15+ Machine Learning Courses on Udemy — Here Are My Top 5 Recommendations

I Thought I Knew Kafka… Until Production Broke My Spring Boot App

How I Finally Understood Kafka by Building a Real System, Not Watching Another Tutorial Continue reading on Javarevisited » This post first appeared on Read…

Read MoreI Thought I Knew Kafka… Until Production Broke My Spring Boot App

Why Java 21 Features Finally Made My Production Code Cleaner and Safer

Pattern Matching, Record Enhancements, and Virtual Threads in Practice Continue reading on Javarevisited » This post first appeared on Read More

Read MoreWhy Java 21 Features Finally Made My Production Code Cleaner and Safer

I Thought I Was Good at Java — Then Ola Asked Me These Questions

My real experience with Ola’s Java interview — the questions that surprised me, the mistakes I made, and what you should prepare if you… Continue reading on…

Read MoreI Thought I Was Good at Java — Then Ola Asked Me These Questions

Analysis of the Relationships among Object — Oriented Programming, Design Principles, Design…

My articles are open to everyone; non-member readers can read the full article by clicking this link. Continue reading on Javarevisited » This post first…

Read MoreAnalysis of the Relationships among Object — Oriented Programming, Design Principles, Design…

Scenario: Build a connection pool from scratch. What are the considerations?

A connection pool manages a cache of reusable connections to a resource (database, HTTP, etc.), avoiding the overhead of creating new… Continue reading on Javarevisited…

Read MoreScenario: Build a connection pool from scratch. What are the considerations?

Spring AI vs Raw Java: The Fastest Way Out of LLM Boilerplate

In my last post I talked about using OpenAPI’s Java SDK for developing AI features. Continue reading on Javarevisited » This post first appeared on…

Read MoreSpring AI vs Raw Java: The Fastest Way Out of LLM Boilerplate

ByteByteGo vs Codemia.io — Which Is Better for Coding Interviews in 2026?

ByteByteGo vs Codemia.io — Which Is Better for Coding Interviews in 2026? Hello friends, If you’re preparing for coding interviews in 2026, you already know the game has changed.…

Read MoreByteByteGo vs Codemia.io — Which Is Better for Coding Interviews in 2026?

I Tried 30+ ChatGPT Courses — Here Are My Top 10 Recommendations

I Tried 30+ ChatGPT Courses — Here Are My Top 10 Recommendations These are the best online courses you can join to learn ChatGPT and Prompt Engineering…

Read MoreI Tried 30+ ChatGPT Courses — Here Are My Top 10 Recommendations

I Changed One Small Thing in Java. Production Crashed in 10 Minutes.

A true story about confidence, tiny commits, and how one innocent refactor taught me more than any system design interview ever did. Continue reading on…

Read MoreI Changed One Small Thing in Java. Production Crashed in 10 Minutes.

CQRS in Practice: A Java Developer’s Guide as Systems Grow

I have been working on Java systems for a long time, and I have seen how something as simple as a CRUD application can quickly…

Read MoreCQRS in Practice: A Java Developer’s Guide as Systems Grow

Spring Boot 4 Just Made REST Calls Super Easy!

Declarative REST clients, finally done the Spring-native way (and why it matters more than it sounds) Continue reading on Javarevisited » This post first appeared…

Read MoreSpring Boot 4 Just Made REST Calls Super Easy!
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