Systems Design & Architecture

When we open a webpage, the browser doesn’t immediately show everything. It follows a sequence of steps to turn code into pixels on the… Continue reading on Med

Tag your union, switch on the discriminant, and let assertNever turn a forgotten variant into a compile error instead of a 2am page.

Plain-struct domain events, an in-process dispatcher, and a transactional outbox. No event bus library, no message broker required.

A repository is a domain port, not an ORM wrapper. Keep SQL at the edge with sqlc and pgx, map rows to aggregates, and keep the core clean.

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

Because scale exposes what success hides Continue reading on Medium »

Most code does not fail because it is complex. It fails because nobody can understand it two weeks later. Continue reading on Medium »

A step-by-step guide to prepare for System Design Interviews for FAANG and non-FAANG companies

More flexible than lock_guard: unlock mid-scope, defer locking, try once, and the one wrapper condition_variable requires. Continue reading on Medium »

As a Tech Lead overseeing automation operations, the fastest lesson you learn is that scaling RPA has nothing to do with writing faster… Continue reading on Med

Architecture preempts the experiment. 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

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

A real-world guide to logging: what to log, formats, PID, remote logging, and how it saves hours of debugging and revenue loss Continue reading on Medium »

Imagine programming a software for a dealership. You implement the core functions and data which are necessary for receiving payments… Continue reading on Mediu

This is where junior level developer struggles to choose the loop !!!! Continue reading on Medium »

This morning I was working on a design document. The task was clear: build a self-check mechanism...

I told the interviewer the Redis cache was probably overkill. He told the recruiter I “lacked architectural ambition.” Continue reading on Stackademic »

Topology rewrite not bug repair. 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

Next.js route groups, parallel routes, and intercepting routes: advanced routing...

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Why legacy system modernization fails when teams move faster than they understand Continue reading on Medium »

Are you curious about how strong membrane structures are engineered to withstand various weather conditions and loads? In this article, we will delve into the f

A bug report arrived in our team’s inbox on a Tuesday morning. Continue reading on Medium »

Stop Using These Words Interchangeably — Your Production Code Depends on It Continue reading on Medium »

Part 2: Safety Classification — The Decision That Changes Everything Continue reading on Medium »