#debugging

Articles tagged with #debugging

EF Core Returns Stale Data After Update in Production: Root Cause and Fix
You update an order status from Pending to Confirmed, call SaveChangesAsync, and get a clean 200 response. The next GET request on that order comes back Pending. You check the database directly — the
Jun 15, 202610 min read1
ASP.NET Core Web API Returns 404 on Valid Endpoints: Causes and Fixes
Getting a 404 response from an ASP.NET Core Web API endpoint you know exists is one of the most confusing experiences in .NET development. The route is registered, the controller is written, the appli
Jun 11, 202610 min read2
HTTP Error 500.30 – ASP.NET Core App Failed to Start: Root Causes and Fixes
HTTP Error 500.30 is one of the most disorienting errors a .NET team can face in production. The deployment succeeded, the pipeline is green, and then the first request returns a blank error page with
Jun 8, 202615 min read11
ASP.NET Core Slow First Request in Production: Root Cause and Fix
Every .NET team eventually runs into it: the application is fast during load testing, but the first real user request after a deployment - or after a quiet overnight period - takes five, ten, sometime
Jun 6, 202614 min read3
ASP.NET Core Memory Leak in Background Services: Root Cause and Fix
Memory growth that never stops is one of the most disorienting production problems a .NET team can face. The service looks fine in development, passes every load test, and then steadily climbs toward
May 22, 202612 min read
ThreadPool Starvation in ASP.NET Core: Production Root Cause and Fix
ThreadPool starvation is one of the most deceptive failure modes in ASP.NET Core - the application appears healthy under low load but becomes unresponsive or extremely slow under moderate traffic, oft
May 10, 202612 min read18