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Previous issues of The .NET Weekly

Looking for longer guides? Browse all 66 in-depth articles.

From 17ms to 0.04ms: How to Design the Right SQL Index

August 22, 2026

What does a good SQL index look like? I seeded Postgres with 1 million comments and measured every indexing decision with EXPLAIN ANALYZE: a 17ms sequ...

How Do You Build a Social Media Feed? (System Design)

August 15, 2026

The home feed looks like the easiest feature in a social app: fetch posts from the accounts you follow, sort, return a page. That design collapses onc...

Persisting a Rich Domain Model With EF Core

August 8, 2026

Every time I show a rich domain model, someone tells me EF Core can't persist it without public setters and a public constructor. That stopped being t...

Should You Split That Into Microservices? Ask These 5 Questions First

August 1, 2026

Nobody regrets microservices on day one. The regret shows up eighteen months later, when the team is drowning in distributed-systems problems they nev...

The System Design Behind My New SaaS

July 25, 2026

I just shipped Katabench, and it's the most fun system I've ever built: it takes C# from strangers and runs it safely on servers I own. Three Hetzner ...

How I Migrated My Website to Cloudflare and Saved $228

July 18, 2026

This website ran on Netlify for years, at $19 a month. Earlier this month I moved it to Cloudflare Pages: same repo, same GitHub Actions pipeline, zer...

How to Test Vertical Slice Architecture

July 11, 2026

The most common question I get about vertical slice architecture isn't about structure. It's "where do my tests go?" The layered-architecture testing ...

Build Your Own VPN With Tailscale

July 4, 2026

Most of what runs on your servers was never meant to be public: databases, dashboards, admin panels, internal APIs. Tailscale connects your machines i...

Getting Started With NATS JetStream in .NET

June 27, 2026

NATS almost never comes up when .NET developers talk about message queues, and that's a shame. It's a tiny, fast, single-binary broker, and JetStream ...

The Modular Monolith Boundary I Couldn't Take Back

June 20, 2026

We built the system exactly the way a modular monolith is supposed to be built, and that's how I ended up with two modules I couldn't pull apart a yea...

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