AWS Lambda and NestJS: Communication between services
Originally published on Medium on November 11, 2023. In this guide, we’ll speak about communication in a distributed system using AWS Lambda and NestJ…
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The Modern API Gateway: Beyond Simple Routing
The API Gateway Has Grown Up When API gateways first entered the enterprise architecture conversation, the value proposition was straightforward: put …
The Lateral Isolation Tax: Preventing Direct Communication Between Peer Services
I put together a project to document an architectural discipline I call " Lateral Isolation ". The core idea is simple: preventing direct communicatio…
Microservices with Python: Build Scalable Applications
Microservices with Python: Build Scalable Applications tags: python, microservices, architecture, tutorial Microservices with Python: Build Scalable A…
Building Microservices Like a Professional: Lessons I Wish I Learned Earlier
If you've ever started a microservices project by splitting a monolith into dozens of tiny services, you've probably experienced this: "We have micros…
Balancing Peak-Load Scaling and User Experience with CQRS
At 4:30 PM every Friday, thousands of field workers on remote construction sites log off and submit their weekly hours, safety checklists, and equipme…
How We Split a Legacy Monolith Into Microservices Without a Single Outage
8 min read · telecom provisioning platform, 30M+ subscribers Most companies avoid migrating their monolith for one reason: they imagine it as a single…
Architecting 21-Service E-commerce with Golang & DDD
Answer-first: Migrating an e-commerce monolith to 21+ distributed microservices using Golang & DDD. Explore Kratos architecture, Saga patterns, an…
gRPC Internals and Performance
Gearing Up for Speed: A Deep Dive into gRPC Internals and Performance Ever feel like your microservices are gossiping at a snail's pace? You've got th…
JVM Internals for Microservices: Classloading, Memory, and GC in Containers
A few years ago, an iPaaS platform I worked started experiencing intermittent pod restarts in Kubernetes. The issue initially appeared unrelated to th…
Guiding Developers with Limited Cloud Knowledge to Learn Envoy for Microservices Load Balancing
Introduction to Envoy: A Critical Component for Cloud-Native Microservices In microservices architectures, where numerous independent services collabo…
Continuous Delivery Office Hours Ep.4: Mono, micro, mesco
After tackling the question of which branching strategy is best , we turn our focus to architecture in this Continuous Delivery Office Hours episode. …
Distributed Tracing: The Missing Piece of Your Observability Stack
When Logs and Metrics Aren't Enough You have great dashboards. Your log aggregation is solid. But when a user reports "the checkout page is slow," you…
Orchestrate Saga Compensation Timeouts in Real Time (Kiponos Java SDK)
A checkout saga spans inventory, payment, shipping, and loyalty. Downstream latency shifts every hour. Black Friday is not the day to discover your pa…
Correlation IDs in ASP.NET Core: A Practical Guide for Backend Engineers
When we build backend systems, especially APIs and microservices, debugging production issues is rarely about reading one log line. A single request m…
Why API Breaking Changes Still Reach Production Even With CI/CD
Why API Breaking Changes Still Reach Production Even With CI/CD A few years ago I watched a "tiny" API change take down checkout for about forty minut…
Cinema Seat Reservation System — Part 2: Transitioning To Production-Scale and Deploying on Azure Cloud
Introduction This is the second part of sharing my journey to create a microservices-based backend system, in the previous part, I introduced the syst…
Microservices vs. Monolithic Architecture: What Should Your Full-Stack Development Partner Build?
A founder asked me last year to review the architecture his agency had pitched. Eleven services. A message queue. A service mesh. The product was a bo…
Saga Orchestration in Go: Distributed Workflows That Actually Roll Back
Every non-trivial business operation touches more than one system. An e-commerce order reserves inventory, charges a payment method, and schedules a s…
Building and Deploying Spring Petclinic Microservices on AWS: My Experience as Co-Project Lead and App & Docker Lead
Introduction As part of the DMI (DevOps Micro Internship) Cohort 2, our team successfully deployed the Spring Petclinic Microservices application on A…
When to Use Microservices (And When to Stick With a Monolith)
Most teams I talk to assume microservices are the endgame. Split everything into tiny services, deploy independently, scale each one separately — it s…
Deploying Spring Petclinic Microservices with Docker Compose: A Complete DevOps Walkthrough
Introduction As part of my DevOps learning journey in DMI Cohort 2, I deployed the Spring Petclinic Microservices application locally using Docker Com…
HLD Fundamentals #3: Monolithic vs Microservices Architecture
As applications grow, one of the biggest architectural decisions is whether to keep everything in a single application (Monolith) or split it into ind…
The Microservice-to-Engineer Ratio (MTR): Why Too Many Microservices Slow Down Engineering Teams
Discover the Microservice-to-Engineer Ratio (MTR), a powerful architectural metric that reveals when microservices begin hurting engineering productiv…
Pact is great. It's also why most teams don't do contract testing
In 2014, Pact created an entire engineering discipline. Consumer-driven contract testing — the idea that the API consumer, not the provider, should de…
The Operational Overhead of Migrating from Monolith to Modular
Migrating from a monolithic system to a more modular, microservice-like structure often appears to be a better solution at first glance. It promises a…
The Architecture Decisions That Actually Mattered: Building a Production-Ready Multi-Service Backend
What most system design articles skip is the part where you explain why the boring choice was the right one I built a platform that runs social media …
Understanding Hibernate ddl-auto in Spring Boot: When to Use create, update, validate, and none
Choosing the wrong spring.jpa.hibernate.ddl-auto setting can lead to unexpected schema changes or even data loss. In this guide, you'll learn what eac…
I Spent a Decade Chasing Microservices Before Realizing What Scalability Actually Means
A few years ago, I was staring at a red, blinking monitoring dashboard. The system I was looking at had all the modern shiny technology: Kubernetes, R…
How We Built a Node.js Scaffolding Engine with Over 1 Million Mathematically Verified Architecture States
The Scaffolding Fatigue Setting up an Enterprise-grade Node.js project from scratch is notoriously time-consuming. Development teams often spend days …