The Middleware Bug That Took Down Our API (Twice)

<h1> Production Was Down… But Everything Looked Normal 🤯 </h1> <blockquote> <p>A real debugging story about silent failures and why thinking matters more than tools.</p>

<p>The ASP.NET Core middleware pipeline is the backbone of every HTTP request your application processes. Yet most developers only scratch the surface—registering

<p>The dry run said the reminder text would go out to a customer with the window "12PM–2PM." The actual appointment was 8AM–10AM. Four hours off, on a message the customer would