System Design and Architecture

How systems interact. Theory and Practice.

12 July 2025

How I Successfully Signed Up for Oracle Cloud Free Tier After Multiple Failed Attempts

For the past few years, I tried to sign up for the Oracle Cloud Free Tier, but despite using the correct details, my registration attempts kept [...]

01 February 2024

Messaging Protocols Supported by Artemis ActiveMQ

Apache ActiveMQ Artemis supports several messaging protocols, each with unique features and best-use scenarios. Below is a concise overview: 1. AMQP [...]

15 November 2023

Publish-Subscribe Messaging Pattern in Enterprise Messaging Systems (EMS)

In the context of Enterprise Messaging Systems (EMS), the Publish-Subscribe (Pub/Sub) model is a messaging pattern that enables asynchronous [...]