The Modern Dev Stack

🔒 Securing Sensitive Data in .NET Core? Don't Hardcode Your Secrets!

As a senior .NET developer, I've seen API keys, passwords, and connection strings leaked in Git repos too many times. Disaster waiting to happen! 😱

Just published my complete guide covering:
✅ Secret Manager for dev
✅ Azure Key Vault + Managed Identities for prod
✅ Encrypting config sections
✅ Safe logging & Data Protection API
✅ Real C # code examples you can copy-paste

Perfect for .NET 9 devs building secure APIs!

👉 Read it here: link in first coment.

What’s your go-to method for protecting secrets? Secret Manager or Key Vault? Drop a comment! ⬇️

New Technical Guide for .NET Developers!
Have you ever wondered how to make your API safe for retries — without duplicate requests or double billing?
In my latest article, I walk you through building a fully idempotent REST API usingNET 9, EF Core 9, and Polly v8 — from concept to Docker deployment.
You’ll learn:
What idempotency really means in HTTP APIs
How to use the Idempotency-Key header pattern
How to persist and replay responses safely
How to integrate retry logic with Polly v8
How to containerize your solution with Docker
Full GitHub project included
Read the full guide:

https://oussamasaidi.com/how-to-build-an-idempotent-api-with-net-9-ef-core-9-and-polly-v8/
If you’re building APIs that handle payments, orders, or external webhooks,
idempotency is not a buzzword — it’s a necessity.

Build an Idempotent API with .NET 9, EF Core and Polly Step-by-step how to create an idempotent API in .NET 9 using Minimal APIs, EF Core 9, and Polly v8. Includes retry logic, caching, Idempotency-Key pattern.

🚀 Want cleaner, more professional API documentation?
I just published a new guide on how to build modern, interactive, and production-ready API docs using Scalar + .NET Core.
Whether you're a backend dev, API architect, or building your next SaaS project, this setup will level up your developer experience instantly. ⚡
🔥 What you'll get:
✔ Super clean UI
✔ Fast integration
✔ Interactive endpoints
✔ Perfect for real-world production APIs
👉 Read the full guide here:
https://oussamasaidi.com/building-professional-modern-api-documentation-in-net-core-with-scalar/
If you try it out, let me know how it works for you! 🙌

Scalar UI :Building Modern API Documentation in .NET Core How to build modern, clean API documentation in .NET Core using Scalar. Full setup guide, code examples, customization tips, and SEO best practices.

Arduino + Ultrasonic Sensor: Distance Radar with LEDs

Today let’s build something useful AND fun:
A proximity radar using an HC-SR04 + LEDs.

🔧 Hardware

Arduino Uno
HC-SR04 ultrasonic sensor
3 LEDs (green / yellow / red)
3 resistors (220Ω)

🔌 Logic
Green → object far (> 50 cm)
Yellow → medium (20–50 cm)
Red → close (