Systems Design & Architecture

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 »

There’s a repeatable framework behind every great system design answer. Nobody teaches it. I’m showing it here. Continue reading on Engineering Playbook »

A real production failure, broken down layer by layer, and the system design decisions that could have prevented it Continue reading on Engineering Playbook »

Most systems don’t fail because of syntax — they fail because of how they handle flow. At scale,...

I thought System Design was all about memorizing patterns for interviews. Turns out, that was the...

Cache eviction papers are full of hit rate tables. Running the same workloads against your own code...

You don't need ubiquitous language, aggregate roots, or bounded contexts. You need three packages, one interface, and a clean import graph.

Move a Go monolith to small hex services one route at a time. Each step ships behind a flag. No feature freeze. No big-bang weekend cutover.

You left that interview thinking you did okay. The rejection email arrived four days later. No explanation, just “we have decided not to… Continue reading on Me

With the shift to Navigation 3, managing ViewModel lifetimes has evolved. Learn the intricacies of ViewModelStoreOwners and how to ensure… Continue reading on P

Quando a gente começa a estudar programação, é comum colocar tudo no mesmo balaio e chamar qualquer...

One aggregate change per database transaction. That single rule cuts most of the aggregate-design confusion in DDD. Here is how it lands in Go.

One aggregate change per database transaction. That single rule cuts most of the aggregate-design confusion in DDD. Here is how it lands in Go.

Over the past several weeks, I’ve been spending a lot of time thinking about systems. Some of that...

90% of candidates answer the scaling question with “add more servers.” This guide covers the three-layer framework (compute, data… Continue reading on Level Up

Every dependency you add is a bet that someone else won't abandon their project. If the code you...

Your function returns nil. Your caller checks for nil. The check fails. Welcome to typed-nil interfaces in Go.

Explore how TypeScript empowers developers with advanced object-oriented programming, focusing on inheritance and polymorphism. Clear explanations and practical

I've been an enterprise architect for over fifteen years. For several of those years, I was skeptical...

A deep dive into how Apache Flink works, why it exists, and learning it while building a real-time recommendation engine The post System Design Series: Apache F

Choosing the right architecture is one of the most critical decisions in system design. Let’s break...

In the world of high-performance programming, we are obsessed with Slices. We want to take a small...

Part 22 of the series: "Extending bpmn-io Form-JS Beyond Its Limits" The evaluator pattern from...

For Manufacturing Systems, I Start With One Workflow Before I Touch the Full Suite A dashboard, an...

System design consists of two types of designing — one is Low Level and another one is High Level, and both are very very important for… Continue reading on Med

LeetDezine Everyone can describe a URL shortener. Write a row to the DB, generate a short code,...

In 2024, the median Next.js application ships 1.2MB of uncompressed JavaScript to the client on first...

Supabase Multi-Tenant Design — RLS Tenant Isolation, Admin Roles, and Invite Flow DB...

Continue reading on Medium »

Pick two: consistency, availability, partition tolerance

The Cisco 300-830 certification is an advanced-level exam designed for IT professionals who want to deepen their expertise in collaboration systems, particularl

Analogia Imagine que você tem: vários tipos de controle remoto várias marcas de TV O...

Go has no classes, but value objects are the most underused DDD weapon in Go codebases. Four patterns that make invalid state unrepresentable.

In hexagonal Go, main() is your composition root. No DI container, no init() magic. Every dependency visible in one place.

Implicit interface satisfaction is the reason hexagonal architecture feels native in Go. No DI container, no framework, no ceremony.

Shared databases, direct imports, leaked domain types. Three coupling patterns that turn your Go microservices into a distributed monolith.

When every test needs a running Postgres, the problem is not your test suite. It is your domain coupled to infrastructure.

You put the interface next to the implementation. Java does that. Go does not. Here is the before/after that fixes it.

A 400-line handler isn't a code smell. It's a missing architecture. Here's the thin-adapter pattern that fixes it.

Part 16 of the series: "Extending bpmn-io Form-JS Beyond Its Limits" A form designer opens the...

The Monolith is Dead (Again): Why Microservices Are Still Overhyped for Most SaaS Every...

By now, the Backyard Quarry system has grown beyond its original intent. We started with a pile of...