Your application works perfectly on your laptop. Unit tests pass. Integration tests pass. You deploy to production, and suddenly everything grinds to a halt. Five hundred real users hit your homepage simultaneously, and your server starts returning 503 errors.…
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If you've been following this blog, you might have noticed that my main blogging platform is... let's call it "enthusiastically engineered." PostgreSQL AND vector databases, semantic AND full-text search with GIN indexes, automated translation to 14 languages,…
From 89 articles to 487 (including >80 totally new ones)! Well November is almost over so I thought I'd add some highlights and information about what we've done this month. AI & LLM Deep Dive The MAIN goal of this month for me was to get myself updated on all…
When testing code that uses HttpClient, the traditional approach involves mocking HttpMessageHandler using frameworks like Moq. While this works, it can be verbose, ceremony-heavy, and frankly a bit ugly. There's a cleaner alternative: using DelegatingHandler…
If you've built traditional ASP.NET Core MVC applications, you know the problem: that dreaded "click flash" when users navigate between pages. Full page reloads, the browser chrome flickering, content jumping around as the new page renders. It works, but it…
Playwright is Microsoft's official solution for modern browser automation, offering multi-browser support (Chrome, Firefox, Safari) with a single API, built-in trace debugging, and mobile emulation. This guide covers everything from setup to advanced testing…
Modern E2E (End-To-End, using your site like users would) testing doesn't have to be painful. This comprehensive guide shows you how to use PuppeteerSharp for fast, reliable browser automation in .NET-covering everything from basic testing to PDF generation…
Theory is one thing; production code is another. In Part 1 we covered the abstractions—now let's see how they're applied in a real codebase. This article walks through actual background services from this blog platform: file watchers with Polly retry policies,…
Every modern web application has work that shouldn't block an HTTP request—sending emails, processing files, syncing with external services, running scheduled maintenance. ASP.NET Core provides multiple approaches for handling this background work, from simple…
Need to test a snippet of C# code without spinning up a full project? C# Script files (.csx) let you write and run C# code like a scripting language. No Program.cs, no .csproj, no build step - just write and run. Perfect for testing APIs, validating logic, or…
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