Cristian Sifuentes - DEV Community

Cristian Sifuentes

Jan 8

CQRS + Event Sourcing in .NET (C#) — A Production‑Minded Developer Guide (with a Smile)

#csharp #dotnet #cqrs #eventsourcing

2

1

7 min read

Cristian Sifuentes

Jan 6

How Large Language Models (LLMs) Work

#webdev #programming #ai #beginners

1

3 min read

Cristian Sifuentes

Jan 6

What Is a Neural Network? (From Math to Modern AI)

#webdev #programming #ai #beginners

1

3 min read

Cristian Sifuentes

Jan 6

Architecture and Internal Operation of Blockchain

#webdev #programming #ai #beginners

2

3 min read

Cristian Sifuentes

Jan 6

How a .ZIP File Works — Compression Explained with a Simple Example

#webdev #programming #ai #beginners

3

3 min read

Cristian Sifuentes

Jan 6

Videos: Containers, Codecs, and Protocols — How Motion Becomes Streamable

#webdev #programming #ai #beginners

1

3 min read

Cristian Sifuentes

Jan 6

How the .JPG Format Works Understanding Image Compression Through Human Perception

#algorithms #beginners #performance

1

3 min read

Cristian Sifuentes

Jan 6

Databases Explained — Beyond Excel Tables

#webdev #programming #ai #beginners

1

3 min read

Cristian Sifuentes

Jan 6

Files: Metadata, Headers, and Extensions — How Computers Really Understand Your Data

#webdev #programming #ai #beginners

3 min read

Cristian Sifuentes

Jan 6

Permissions, Process Levels, and Execution Privileges

#webdev #programming #ai #beginners

3 min read

Cristian Sifuentes

Jan 5

Differences Between Windows, Linux, and macOS

#programming #ai #webdev #beginners

3 min read

Cristian Sifuentes

Jan 5

Domain Names, DNS, and How to Get a .com — From Names to Infrastructure

#webdev #programming #ai #beginners

3 min read

Cristian Sifuentes

Jan 5

IP Addresses & the Internet Protocol — From Numbers to Global

#webdev #programming #ai #beginners

3 min read

Cristian Sifuentes

Jan 5

What Is an Algorithm and What Is a Programming Language?

#algorithms #programming #webdev #ai

3 min read

Cristian Sifuentes

Jan 2

GPUs: Graphics and AI Processors — From Pixels to Intelligence

#webdev #programming #ai #beginners

1

3 min read

Cristian Sifuentes

Jan 2

Phones and Their System on a Chip (SoC) — The Hidden Engine of Modern Devices

#webdev #programming #ai #beginners

2

3 min read

Cristian Sifuentes

Jan 2

How Files Are Organized — Understanding File Systems and Paths published

#computerscience #fundamentals #filesystem #beginners

1

3 min read

Cristian Sifuentes

Jan 2

How Computers Store Data — From Memory to Meaning

#computerscience #fundamentals #architecture #memory

2

4 min read

Cristian Sifuentes

Jan 2

How the Internet Works — From a Single Message to the Global Network

#webdev #programming #ai #beginners

2

3 min read

Cristian Sifuentes

Jan 2

What Is an Operating System? — The Silent Architect Behind Every Device

#softwareengineering #programming #webdev #ai

1

3 min read

Cristian Sifuentes

Jan 2

CPUs & RAM Explained — How Computers Actually Think and Remember

#softwareengineering #computerscience #hardware #fundamentals

1

4 min read

Cristian Sifuentes

Jan 2

Bits & Bytes Explained — The True Foundation of All Software

#computerscience #beginners #programming #ai

1

4 min read

Cristian Sifuentes

Jan 2

How Electronic Circuits Actually Work — From Electrons to Modern Computing

#softwareengineering #electronics #computerscience #beginners

1

4 min read

Cristian Sifuentes

Jan 2

How Computers and Phones Actually Boot — From Power Button to Operating System

#softwareengineering #computerscience #linux #programming

1

2 min read

Cristian Sifuentes

Dec 24 '25

C# OOP Mastery — From Quiz Answers to Production‑Grade Mental Models

#dotnet #csharp #oop #architecture

2

1

5 min read

Cristian Sifuentes

Dec 23 '25

C# Architecture Mastery — Event-Driven Architecture in .NET (Clean Boundaries with Messaging) (Part 12)

#dotnet #csharp #eventdriven #cleanarchitecture

3

3 min read

Cristian Sifuentes

Dec 23 '25

C# Architecture Mastery — Scaling Teams with Architecture (Conway’s Law & .NET) (Part 11)

#dotnet #csharp #architecture #conwayslaw

3

2 min read

Cristian Sifuentes

Dec 23 '25

C# Architecture Mastery — Refactoring Legacy ASP.NET Core Apps Toward Clean Architecture (Part 10)

#dotnet #csharp #aspnetcore #cleanarchitecture

1

2 min read

Cristian Sifuentes

Dec 23 '25

C# Architecture Mastery — CQRS in ASP.NET Core (When It Helps, When It Hurts) (Part 9)

#dotnet #csharp #cqrs #aspnetcore

1

3 min read

Cristian Sifuentes

Dec 23 '25

C# Architecture Mastery — EF Core in Clean Architecture (Part 8)

#dotnet #csharp #efcore #cleanarchitecture

1

3 min read

Cristian Sifuentes

Dec 23 '25

C# Architecture Mastery — Testing Strategies in Clean Architecture (.NET) (Part 7)

#dotnet #csharp #testing #cleanarchitecture

1

3 min read

Cristian Sifuentes

Dec 23 '25

C# Architecture Mastery — Clean Architecture vs Vertical Slice Architecture (Part 6)

#dotnet #csharp #architecture #cleanarchitecture

1

3 min read

Cristian Sifuentes

Dec 23 '25

C# Architecture Mastery — Architecture Smells in ASP.NET Core (Part 5)

#dotnet #csharp #aspnetcore #cleanarchitecture

1

3 min read

Cristian Sifuentes

Dec 23 '25

C# Architecture Mastery — Clean Architecture in ASP.NET Core: Minimal APIs vs MVC (Part 4)

#dotnet #csharp #aspnetcore #cleanarchitecture

1

2 min read

Cristian Sifuentes

Dec 23 '25

C# Architecture Mastery — Dependency Injection, Lifetimes & Composition Roots (Part 3)

#dotnet #csharp #dependencyinjection #cleanarchitecture

3 min read

Cristian Sifuentes

Dec 23 '25

C# Architecture Mastery — From OOP to SOLID to Clean Architecture (Part 2)

#dotnet #programming #csharp #cleanarchitecture

1

2 min read

Cristian Sifuentes

Dec 23 '25

C# Fundamentals Mastery — From Quiz Answers to Production-Grade .NET Mental Models

#dotnet #csharp #programming #architecture

1

2 min read

Cristian Sifuentes

Dec 22 '25

10 - Architecture and Organizations — Conway’s Law Revisited

#csharp #dotnet #softwaredesign #backend

2

3 min read

Cristian Sifuentes

Dec 22 '25

9 - Hexagonal, Onion, Vertical Slice — Same Forces, Different Projections

#dotnet #architecture #hexagonal #programming

1

3 min read

Cristian Sifuentes

Dec 22 '25

8 - When Not to Use OOP — The Cost of Abstraction

#csharp #dotnet #oop #architecture

1

3 min read

Cristian Sifuentes

Dec 22 '25

7 - Clean Architecture as a Consequence, Not a Pattern

#csharp #dotnet #oop #architecture

1

3 min read

Cristian Sifuentes

Dec 22 '25

6 - SOLID Revisited — A Post-Pattern Perspective

#csharp #dotnet #architecture #backend

1

3 min read

Cristian Sifuentes

Dec 22 '25

5 - Polymorphism — Designing for Substitution, Not Reuse

#csharp #dotnet #oop #architecture

1

2 min read

Cristian Sifuentes

Dec 22 '25

4 - Encapsulation & Information Hiding — Designing for Ignorance

#csharp #dotnet #oop #architecture

1

3 min read

Cristian Sifuentes

Dec 22 '25

3 - Composition vs Inheritance — The Physics of Change

#csharp #dotnet #oop #cleanarchitecture

1

3 min read

Cristian Sifuentes

Dec 22 '25

2 - Abstract Classes vs Interfaces in C# — A Deep, Real‑World Comparison

#dotnet #csharp #backend #programming

1

4 min read

Cristian Sifuentes

Dec 22 '25

1 - Classes in C#: From First Principles to Architectural Mastery

#csharp #dotnet #oop #architecture

1

3 min read

Cristian Sifuentes

Dec 19 '25

Entity Framework Core Raw SQL — From FromSql() to Production‑Grade Safety

#dotnet #csharp #entityframework #sql

1

3 min read

Cristian Sifuentes

Dec 18 '25

When Git Push Protection Saves You: Remove Secrets the Right Way (Azure AD/Entra + .NET)

#git #github #devops #dotnet

1

4 min read

Cristian Sifuentes

Dec 18 '25

C# Loops — From `for` and `foreach` to CPU Pipelines and LLM‑Ready Code

#dotnet #csharp #performance #llm

1

3 min read

Cristian Sifuentes

Dec 17 '25

C# Conditionals Mental Model — From `if (x > 0)` to LLM‑Ready Decisions

#dotnet #csharp #performance #programming

1

3 min read

Cristian Sifuentes

Dec 15 '25

Microsoft Entra ID Multi‑Tenant SaaS + .NET 8 Web API — A Production‑Grade Playbook (3 Tenants, 3 Clients)

#dotnet #csharp #azure #entra

4

1

9 min read

Cristian Sifuentes

Dec 15 '25

Arrays 101 for LLM Power Users — From Basics to “Token‑Efficient Thinking” (with C# Examples)

#dotnet #csharp #ai #llm

1

6 min read

Cristian Sifuentes

Dec 9 '25

C# Data Structures Mental Model — From `User pedro` to LLM‑Ready Types

#dotnet #csharp #architecture #performance

1

8 min read

Cristian Sifuentes

Dec 8 '25

C# Lists & Dictionaries Mental Model — From `names.Add("Ana")` to LLM‑Ready Collections

#dotnet #csharp #performance #datastructures

1

14 min read

Cristian Sifuentes

Dec 8 '25

C# Operators Mental Model — From `number % 2 == 0` to LLM‑Ready Code

#csharp #dotnet #beginners #llms

1

14 min read

Cristian Sifuentes

Dec 8 '25

C# Arrays Mental Model — From `numbers[0]` to LLM‑Ready Code

#dotnet #csharp #llms #architecture

1

8 min read

Cristian Sifuentes

Dec 8 '25

C# StringType Mental Model — From \"Hi Cristian\" to LLM-Ready Code

#dotnet #csharp #performance #llms

1

16 min read

Cristian Sifuentes

Dec 8 '25

Basic Concepts of C# Numeric Types — From Integers to SIMD, for LLM-Ready Thinking

#dotnet #csharp #llms #numerics

1

8 min read

Cristian Sifuentes

Dec 8 '25

Basic Concepts of C# Data Types — From Bits to LLM‑Ready Mental Models

#dotnet #csharp #llms #education

1

9 min read

Writing Debut