Systems Design & Architecture

"We've finished the model... when do we get to the value?" Here's what I'm watching happen in real...

In the previous post, I walked through the compensation logic in each service. The code looks clean...

Last post was why. This one is what it looks like. The thing I said at the end of last post was:...

Struct embedding looks like inheritance to anyone arriving from Java or C#. It is not. Here are three bug shapes that prove it.

Something shifted in the last ninety days. While the headlines talk about 1.9% tech growth, those of...

Why? Ownership is the concept in Rust that determines how memory is managed. In...

A few weeks ago, I shipped the first reference implementation of a small specification I'd been...

This is Part 3 of a series that takes a GNOME application from an empty directory to acceptance into...

Master the Next.js App Router with this comprehensive guide covering routing, layouts, server components, data fetching, and advanced patterns for building mode

The Surprising Truth About Microservices vs Monoliths vs AI Hype in Real-World Systems If...

A Pragmatic Approach to Enterprise Modernization Many corporations have spent more than...

By the time a 100-microservice architecture hits 120 services, your team is spending 40% of sprint...

In 2026, Netflix’s monolith-to-microservices migration cost $42M in engineering hours, while Amazon’s...

Make invalid states unrepresentable. Three Go patterns that turn runtime bugs into compile errors: parse-don't-validate, states-as-types, phantom types.

Make a multi-service order flow survive crashes. A Go state machine, compensation per step, idempotency keys, and Postgres-backed resumes.

One Order aggregate with behaviour, one OrderRow flat enough to scan into. The mapper between them is what keeps the seam honest.

Picking the right ID for your DDD aggregate roots in Go. UUID v4, v7, ULID, Snowflake — sortability, distribution, B-tree friendliness, decision rule.

Pure pricing in the middle, dirty I/O at the edges. The Go split that makes domain tests run in microseconds and integration tests rare.

Have you ever clicked a page and just… stared at a blank screen? For 2–3 seconds… nothing...

For years, frontend developers have been stuck in an annoying trade-off: SSG (Static Site...

Discover how Rust's pattern matching goes beyond switch statements. Learn exhaustive matching, guards, and real-world examples that eliminate entire classes of

Learn how to build a lightweight distributed tracing layer in Go using OpenTelemetry and adaptive sampling to monitor microservices without overwhelming your st

If you look closely at how modern businesses operate today, one thing becomes obvious — nothing runs on a single system anymore. Continue reading on Medium »

Random routing scatters requests, kills cache locality, and inflates tail latency in high-throughput systems. We fixed it using a clean two-layer deterministic

System Design: Uber ...

Learn how to optimize memory allocation in Rust for High-Performance Computing (HPC) applications, reducing memory leaks and improving performance.

Retrospective: Migrating to Next.js 15 App Router Broke 30% of Our User Routes Our team...

Discover critical architecture decisions for building scalable ecommerce storefronts. Learn how composable architecture, component-based design, and A

From UI Components to Runtime Architecture: The shift that fixed how I build forms at scale. I used...

Em um mundo cada vez mais dependente de sistemas digitais, a indisponibilidade de serviços pode...

Introduction Je suis architecte SI dans le domaine de la santé, au sein d’un contexte où...

A practical walkthrough of interfaces built around making everyday values harder to misuse.

If you find this helpful, please like, bookmark, and follow. To keep learning along, follow this...

You drew WebSockets. You mentioned Kafka. You added Cassandra. The interviewer nodded. Then they asked one question — and your entire… Continue reading on Mediu

You are not struggling with Angular. You are struggling with how you use NgRx. Continue reading on Medium »

In real systems, something is always failing. An API times out. A database slows down. A third-party...

Your Angular code is not slow because of Angular. It is slow because of decisions you repeat every day. Continue reading on Medium »

The data structure is not exotic. The insight is. Here’s what most system design explanations miss about fan-out at scale. Continue reading on Medium »

A practical introduction for developers who want control without chaos What Is Zig? If...

We've already covered basic field alignment and explored how inheritance layers data atop one...

Platform engineering has to be approached from a socio-technical perspective, and shaped by all stakeholders, not just developers, Sergiu Petean said in his tal

The third article in the ReAct quadrant series. ReAct may be a tool for the design phase, not for production. Separate design and operation, and the legitimate

Meet the specialists — learn how Heaps manage priority with O(1) access and how Tries enable lightning-fast autocomplete and prefix… Continue reading on Medium

Cache stampede prevention that doesn’t tank your performance Continue reading on CodeX »

First of all the CQRS policy is implemented for large systems not for any small systems which have very limited number of users. Continue reading on Medium »

If you're using Next.js with TypeScript and Tailwind CSS, setting up ESLint correctly is harder than...

Most systems validate too late — and that’s why they fail when it matters Continue reading on Medium »

Why Banking Workflows Are Following Banking Data Out of the Cathedral Continue reading on Medium »