The Practical Engineer

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Practical knowledge for engineers who ship. Deep dives, guides, and architecture insights.

GitHub Copilot Just Grew Up — And It’s Bringing a Metered Bill With It

There was a time when GitHub GitHub Copilot felt like magic: pay a flat fee, get autocomplete on steroids, ship faster, feel like a 10x dev on a good day. Well… that era is ending. And honestly? It was inevitable.

Frank Mendez
Scaling WebSockets the Wrong Way (On Purpose): A Multi-Instance Reality Check

You don’t truly understand distributed systems until your app “works perfectly”… and then breaks the moment you scale it.

Frank Mendez
🚀 From WebSockets to AI Agents: Building chatmesh (and Breaking It on Purpose)

Most developers build features. I wanted to build systems. So instead of another CRUD app, I started building a real-time chat backend in Go—something simple on the surface, but brutal underneath.

Frank Mendez
🚀 Building a Newsletter Subscription Feature That Actually Works (No BS Edition)

No Mailchimp. No overengineering. Just a clean, event-driven newsletter system that works.

Frank Mendez
🚨 Vercel Breach: A Wake-Up Call We All Needed (But Didn’t Want)

The Vercel breach isn’t just “another security incident.” It’s a reminder that modern dev workflows are fragile, trust-based systems. Here’s what really matters—and what you should fix today.

Frank Mendez
Claude Opus 4.7 Just Dropped — And Yeah, It’s Getting Serious

Claude Opus 4.7 isn’t just another incremental AI release—it’s a signal. Anthropic is quietly sharpening its edge in reasoning, safety, and developer usability. Here’s what stands out (and what doesn’t).

Frank Mendez
Understanding Lending Agreements in the Philippines: MFK Lending Corporation's Commitment to Compliance

Discover how MFK Lending Corporation aligns its lending agreements with Philippine laws, ensuring transparency, fairness, and data protection for borrowers.

Frank Mendez
Build a Complete Profile Settings System with Supabase + Next.js (That Doesn’t Suck)

Most profile pages are either too basic or unnecessarily complex. Here’s a clean, scalable approach using Supabase and Next.js that actually feels good to build—and use.

Frank Mendez
Event-Driven User Notifications with Supabase, Webhooks, and Next.js (No Edge Functions Needed)

Stop sending notifications for users who never confirm their email. This guide walks through a clean, event-driven architecture using Supabase, Postgres triggers, and Next.js webhooks—no edge functions required.

Frank Mendez
Mastering Layering in Enterprise Application Architecture

Layering is a fundamental technique in enterprise application architecture that simplifies complexity and enhances maintainability. This blog post explores its evolution, benefits, and challenges based on Martin Fowler's work.

Frank Mendez
Understanding Layering in Enterprise Application Architecture

Layering is a crucial technique in enterprise application architecture that helps manage complexity. This post delves into its benefits, challenges, and evolution over time.

Frank Mendez
Reaction: Batch Processing Isn’t Dead—It’s Just Quietly Running the World

Batch processing doesn’t sound sexy.

Frank Mendez
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