The Monolith is Dead (Again): Why Microservices Are Still Overhyped for Most SaaS
The Monolith is Dead (Again): Why Microservices Are Still Overhyped for Most SaaS Every few years, the tech world declares the monolith dead, ushering…
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Rollback Chains: When Payment Fails, What Actually Happens
Rollback Chains: When Payment Fails, What Actually Happens In the previous post, I showed the orchestrator's state transition table. It knows which to…
🚀 OathMesh v1.0.0-rc.1: Zero-Trust API Keys That Survive the Real World
Replacing static API keys with 5-minute, self-destructing Ed25519 tokens sounds great—until your Redis node dies, NTP drifts, or you realize you have …
Microservices: A Practical Crash Course for Engineers Who Actually Ship
Microservices: A Practical Crash Course for Engineers Who Actually Ship Microservices have become one of the most discussed architectural patterns in …
The Saga vs Event-Sourcing Decision Most Teams Get Backwards
Book: Event-Driven Architecture Pocket Guide My project: Hermes IDE | GitHub — an IDE for developers who ship with Claude Code and other AI coding too…
Saga Pattern Without the Drama: A Real Order Service in 200 Lines
Book: Event-Driven Architecture Pocket Guide My project: Hermes IDE | GitHub — an IDE for developers who ship with Claude Code and other AI coding too…
CQRS Is Almost Always Wrong. Here Are the 4 Cases Where It's Actually Right.
Book: Event-Driven Architecture Pocket Guide My project: Hermes IDE | GitHub — an IDE for developers who ship with Claude Code and other AI coding too…
200-Line Outbox Pattern: ~90% Fewer Mystery Bugs
Book: Event-Driven Architecture Pocket Guide: Saga, CQRS, Outbox, and the Traps Nobody Warns You About My project: Hermes IDE | GitHub — an IDE for de…
From HTTP Chaos to Kafka: How We Fixed Inter-Service Communication in a NestJS Microservices Platform
From HTTP Chaos to Kafka: How We Fixed Inter-Service Communication in a NestJS Microservices Platform A technical deep-dive into replacing synchronous…
Microservices Aren't About Services
https://www.youtube.com/watch?v=4F0dlOMWGHE Monolith or microservices? You've been in this meeting before. One engineer says "we need to move to micro…
Why Your Microservices Should Talk Like Functions, Not URLs (A Practical gRPC Walkthrough in Go)
In most microservice setups, service-to-service communication starts the same way: GET /api/v1/users/{id} It works. It’s familiar. It’s easy to debug.…
Message Queues Explained: RabbitMQ vs Kafka vs SQS — When to Use What
Why Message Queues? Imagine Service A needs to send emails after a user signs up. If it calls the email service directly: What if the email service is…
How PayPal Scales Payments: The Architecture of Global Trust
In this guide, we explore system. Your transaction is pending. A timeout occurs. Now you're staring at a screen wondering if you just paid $1,000 twic…
What is MCP and Why Java Developers Should Care
What is MCP and Why Java Developers Should Care Every AI tutorial shows you how to build a chatbot. You give it a system prompt, connect it to an LLM,…
The Evolution of a SaaS Architecture
Building a scalable SaaS platform is a journey of continuous learning and strategic evolution. In modern software engineering, the most successful pla…
The Orchestrator: State Transitions and Kafka Routing
In the previous post, I explained why I chose the Saga Pattern over distributed transactions. Now let's look at the central piece: the orchestrator. T…
System Design Concepts- 1
Why System Design Matters for DevOps 1. Distributed Systems A distributed system splits workloads across multiple machines. Instead of one powerful se…
Azure Service Bus for Event-Driven Systems: A Practical Deep Dive
Introduction: Why Event-Driven Architecture Matters Now More Than Ever If you've been building distributed systems on Azure for any meaningful amount …
Contract Testing Explained for Beginners
Let me paint a scene that will feel familiar if you've worked on any project with more than one moving part. It's a Friday afternoon. You and the back…
Why We Didn't Converge: ClickHouse's VLDB Paper and the Architecture Agents Actually Need
The moment ClickHouse writes CPU code for your query You run SELECT category, COUNT(*) FROM events GROUP BY category against 100 million rows. On most…
Consolidating Your Pipeline: Implementing Multi-Tenant Namespace Tunnels
IT InstaTunnel Team Published by our engineering team Consolidating Your Pipeline: Implementing Multi-Tenant Namespace Tunnels Consolidating Your Pipe…
What It Takes to Build Real-Time Fraud Detection Systems at Scale
When you work on large-scale payment systems, fraud detection isn’t just a feature — it’s a constant balancing act between speed, accuracy, and user e…
What Daraja 3.0 actually changed for developers — and what it did not
What Daraja 3.0 actually changed for developers — and what it did not. Safaricom launched Daraja 3.0 on November 25, 2025, at the M-Pesa Integrators F…
Stop Wasting Hours on "Project Setup": How I Automated Production-Ready Go APIs
Why I built a CLI to bridge the gap between "Hello World" and a production-ready microservice in 60 seconds. The "Boilerplate Tax" As a backend engine…
I upgraded a .NET library into a microservices platform - RabbitMQ, OpenTelemetry, and Azure AI
I had a .NET library that wrapped Azure OpenAI and Azure AI Search into clean domain services for travel applications. It worked, but it was a monolit…
Kafka для начинающих: Apache Avro и Schema Registry (практика)
Переводим нашу платформу с JSON на Apache Avro и Schema Registry. Заменяем сериализаторы и десериализаторы, генерируем классы из схем и разбираем разн…
Part 1 : Eureka Service Registry | Spring cloud
This blog mark the beginning of a new series focused entirely on the Microservice design pattern . In this series we will see how Microservice design …
Building “The Better Store” an agile cloud-native ecommerce system on AWS — Part 1: Introduction to Microservice Architecture
A resilient cloud native app built using Domain Driven Design and Microservice Architecture on AWS Overview A lot has changed in IT over the last 10–1…