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
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…
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…
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…
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…
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.…
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…
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…
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…
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…
Part 1: Why we needed NIO… and why Virtual Threads may finally free us from it.(WSO2
Part 1: Why we needed NIO… and why Virtual Threads may finally free us from it.(WSO2 Integrator: MI Perspective) Why Java Servers Chose Complexity — and How…
10 Things Software Engineers Can Learn from Instagram’s Scaling to 2.5 Billion Users
Insights from Instagram’s Journey to Serving Over 2.5 Billion Users credit — DesignGurus.io Hello friends, Instagram’s journey from a simple location check-in app to a photo-sharing giant serving…
I Tried 20+ RAG and GenAI Courses on Udemy — Here Are My Top 5 Recommendations
I Tried 20+ RAG and GenAI Courses on Udemy — Here Are My Top 5 Recommendations These are the best Udemy courses to learn RAG and GenAI…
How Indexes Actually Speed Up Queries
What your database is really doing while you wait The query looks innocent. SELECT *FROM usersWHERE email = ‘[email protected]’; You hit Enter.The database pauses.Your app feels……