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Role vs Permission: Why Your RBAC Shouldn't Use Role Checks
You're building a multi‑user app. You add an admin who can delete products and a sales rep who can't. Your code looks like this: ts // Bad approach – checking r...
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Judgment is the conversion point between output and impact. Without it, most developers will build a searching app, not a decision engine.
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Simplificando Inversion of Control y Dependency Injection
Inversión de Control IoC Inversión de Control IoC es un principio fundamental en el que se apoyan todos los frameworks modernos. La idea central es simple: dej...
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When Does the Role of a Software Architect Truly Make a Difference in a Project?
If you've ever been part of a tech project that seemed to “run smoothly on its own,” chances are there was a sharp software architect behind the scenes — even i...
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From Monolith to Modular (A basic simple example)
How I’m learning System Design by breaking my own code. Phase 1: The Simple Single Server 2‑Tier Repository: arsalanbardsiri/simple-single-server-apphttps://git...
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Smarter Software Architecture Builds Smarter Teams
1. Procedural Development: The Comfortable Path to Isolation Procedural work is simple: Input → logic → output. Put the logic in a service. Name it something l...
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Shared Resources, Isolated Data: The Power of Multi-Tenant SaaS
The multi-tenant SaaS architecture is the bedrock of the modern cloud software economy, powering giants like Salesforce, HubSpot, and Slack. It represents a par...
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Dependency Injection: The Anti-Pattern That Killed Object-Oriented Design and Won
Enterprise applications didn’t get better with DI – they became slower, harder to change, harder to test, harder to upgrade, and more expensive to maintain. DI...
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Lessons From 'Dependency Injection Principles, Practices, and Patterns'
Introduction My first job as a software developer was writing C for a software development agency that worked very closely with Microsoft. As a junior engineer...
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JavaScript Design Patterns Explained (2025 Guide)
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Adapter Pattern Explained with Real Examples
Introduction You're integrating a third-party payment gateway into your application. Everything looks straightforward until you realize their SDK uses a comple...
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How to Create a SaaS Project: A Step-by-Step Guide
Step 1: Identify a Problem to Solve Every successful SaaS project begins with a real‑world problem. Your goal is to create software that solves a pain point fo...