Systems Design & Architecture

As software engineers, we spend a massive amount of time focusing on our application layer. We write optimized code, dockerize our… Continue reading on Medium »

For the first two years of my career, I thought I was pretty good at low-level design. Continue reading on Medium »

The five aspects of HLD that separate a senior engineer from a strong junior — requirements, scoping, tech choices, component architecture… Continue reading on

A complete solution: expressive range types in your domain layer, full PostgreSQL...

Topology rewrite not bug repair. A single line. Hold it. More as the build matures. — chiefmojo79

A walkthrough of designing a real-time collaborative whiteboard from a blank page to a production-ready architecture.

Você já deve ter ouvido a palavra entidade em diferentes contextos no desenvolvimento de software. No...

One of the reasons I often find myself disagreeing with modern software trends is that many...

Polymorphism, Rethought at Compile-Time In this article, we will explain how the features...

Covers: L4 vs L7, Algorithms, Sticky Sessions, Active-Active vs Active-Passive, Health Checks, SSL...

Most business applications start as CRUD. Create a record. Edit it. Delete it. Show it in a...

A seemingly cryptic Next.js error led to a deep dive into build processes and environment variables, revealing a common pitfall for solo developers on limited i

Architecture preempts the experiment. A single line. Hold it. More as the build matures. — chiefmojo79

AMD EPYC 8005 Series Architectural Specifications When evaluating dedicated server CPUs...

The code broke on a retry I never mentioned, and even when I ask for the fix, the first version is usually the wrong shape. The answer was… Continue reading on

I'm Building an OS From Scratch in Rust — And It Already Has a Desktop, Filesystem, and...

“The systems that got you here will absolutely, spectacularly and without warning fail to get you there.” Continue reading on Medium »

Architecture preempts the experiment. A single line. Hold it. More as the build matures. — chiefmojo79

Introduction Building modern software applications requires much more than writing code. As...

In the previous part we finished the front end of our assembler: a .s file goes in, and a tree of AST nodes comes out. But an AST is not… Continue reading on Me

Architecture preempts the experiment. A single line. Hold it. More as the build matures. — chiefmojo79

Every microservices deck draws the same box: one database per service, labeled as a security...

Embarrassingly Simple Objects, Rigid State Machines Continue reading on Medium »

This article was written with the assistance of AI tooling for structure and syntax. The concepts,...

Understanding how Redis distributed locks work under the hood, their implementation details, pitfalls, and production-grade solutions. Continue reading on Javar

Definição O Composite é um padrão de projeto estrutural que permite compor objetos em...

Why languages like Java force you to declare your data types, and why this exact trade-off is the reason I prefer TypeScript. Continue reading on Stackademic »

Concurrency is byproduct of capability design not bottleneck to patch. A single line. Hold it. More as the build matures. — chiefmojo79

A deep dive into system design, microservices, databases, RAG pipelines, and Python internals Continue reading on Data Science Collective »

A deep dive into system design, microservices, databases, RAG pipelines, and Python internals Continue reading on Data Science Collective »

In the previous part we followed mov r0, #1 all the way from text into an AST, and I promised we'd come back for the breadth. In this part… Continue reading on

Concurrency is byproduct of capability design not bottleneck to patch. A single line. Hold it. More as the build matures. — chiefmojo79

In the last part, we talked about why we built Vyshyvanka. Today, we're going to talk about how....

Imagine pouring millions into building a state-of-the-art skyscraper. The glass facade is breathtaking, the penthouse views are immaculate… Continue reading on

The Paper That Rejected Its Readers — And Saved Distributed Systems Continue reading on Medium »

Intermittent connectivity is the norm on cold-chain lanes, not the edge case. The on-device logging, store-and-forward reconciliation, and timestamp-integrity d

TL;DR: Black Friday on a 2M-product platform. Before adding a single server, EXPLAIN ANALYZE found...

System design can feel overwhelming at first. There are hundreds of concepts, dozens of technologies, and seemingly infinite ways to… Continue reading on Medium

Explore the psychology, engineering patterns, and strategic decisions behind systems that stay stable, maintainable, and scalable — even… Continue reading on AW

By Carlos Alberto Peña Molina — Founder & AI Systems Architect, Runox Continue reading on Medium »

Concurrency is byproduct of capability design not bottleneck to patch. A single line. Hold it. More as the build matures. — chiefmojo79

Concurrency is byproduct of capability design not bottleneck to patch. A single line. Hold it. More as the build matures. — chiefmojo79

Definition: Strategic Cartography is the computational and mathematical discipline of mapping relationships, signals, incentives… Continue reading on Medium »

When I was in the beginning phase of my web development journey, I faced a highly frustrating issue:...

Architecture preempts the experiment. A single line. Hold it. More as the build matures. — chiefmojo79

TL;DR: You’ve been taught that IRepository and IUnitOfWork are "best practices." The truth? In 2026, they're ceremony without value —… Continue reading on Mediu

Como a separação de responsabilidades transforma tokens em uma arquitetura que escala Continue reading on Medium »

(The following example is fictionalized.) A notification template feature shipped six months ago. It...