Alex Klimenko – Medium

Alex Klimenko

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Java: Event Driven architecture

Some aspects of event driven architecture with examples

Apr 25, 2024

Java: Event Driven architecture

Apr 25, 2024

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Microservices Architecture Patterns, Exploring the Essential

Microservices architecture has become increasingly popular in modern software development due to its scalability, flexibility, and…

Apr 29, 2024

Microservices Architecture Patterns, Exploring the Essential

Apr 29, 2024

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Concurrency in Java: Best Practices and Performance Optimization

Welcome to an exploration of best practices and essential patterns in concurrent programming, where we delve into optimizing performance…

May 12, 2024

Concurrency in Java: Best Practices and Performance Optimization

May 12, 2024

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Java: Mastering SOLID Principles

Building Robust and Maintainable Software

May 1, 2024

Java: Mastering SOLID Principles

May 1, 2024

PostgreSQL: Learn Once, Use Literally Everywhere

Everything you should know before your next interview — and everything that will make you dangerous after it.

Dec 27, 2025

PostgreSQL: Learn Once, Use Literally Everywhere

Dec 27, 2025

The Complete Guide to Database Transactions: How COMMIT and ROLLBACK Really Work in MySQL and…

Ever wondered what happens when you click “Transfer Money” in your banking app? Or how an e-commerce site ensures your order doesn’t get…

Nov 2, 2025

The Complete Guide to Database Transactions: How COMMIT and ROLLBACK Really Work in MySQL and…

Nov 2, 2025

Database Indexes in MySQL and PostgreSQL: A Comprehensive Guide with Real-World Insights

Introduction

Oct 27, 2025

Database Indexes in MySQL and PostgreSQL: A Comprehensive Guide with Real-World Insights

Oct 27, 2025

Custom Annotations and AOP in Spring: A Practical Guide

Introduction: The Power of Declarative Programming

Sep 27, 2025

Custom Annotations and AOP in Spring: A Practical Guide

Sep 27, 2025

Java Locks: ReentrantLock, ReadWriteLock, StampedLock, and Semaphore Explained

In Java, synchronization is crucial for thread-safe operations. While synchronized blocks are the simplest way to achieve mutual exclusion…

Sep 4, 2025

Java Locks: ReentrantLock, ReadWriteLock, StampedLock, and Semaphore Explained

Sep 4, 2025

CountDownLatch / CyclicBarrier / Phaser — Running Parallel Tests

When writing stress tests in Java, it’s common to run many threads at the same time to simulate heavy load. But how do you make sure all…

Aug 24, 2025

CountDownLatch / CyclicBarrier / Phaser — Running Parallel Tests

Aug 24, 2025

Alex Klimenko

Alex Klimenko

Exploring Java backend, algorithms, ML, and continuous learning through architecture best practices. https://github.com/alxkm

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