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Coding Droplets

@codingdropletsJoined April 2025

Build, Scale & Master .NET with Clean, Practical Tutorials

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Coding Dropletscodingdroplets.com289 posts

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CDCoding Dropletscodingdroplets.com4h ago · 10 min read

7 Common Mistakes Unit Testing ASP.NET Core Controllers (And How to Fix Them)

Unit testing ASP.NET Core controllers looks trivial until your first test passes for the wrong reason. You assert that an action returned Ok, the bar goes green, and six months later a refactor that q

CDCoding Dropletscodingdroplets.com1d ago · 11 min read

Managing LLM Conversation History in .NET: Root Cause and Fix for Context Window Overflow

The first AI chat endpoint you ship almost always works. You append each user message and each model reply to a List<ChatMessage>, send the whole list on every turn, and the assistant remembers the co

CDCoding Dropletscodingdroplets.com3d ago · 10 min read

How to Evaluate LLM Output in .NET APIs: A Real-World Walkthrough

The demo went perfectly. Your ASP.NET Core support-desk endpoint took a customer question, called an LLM, and returned a clean, helpful answer. Everyone nodded. Two weeks later someone tweaked the sys

CDCoding Dropletscodingdroplets.com4d ago · 12 min read

How to Build a Job Queue in .NET with PostgreSQL SKIP LOCKED: A Real-World Walkthrough

Every .NET team eventually needs to run work outside the request cycle: send the welcome email, generate the invoice PDF, push the webhook, re-index the search document. The default instinct is to rea

CDCoding Dropletscodingdroplets.com5d ago · 11 min read

SignalR Falls Back to Long Polling in ASP.NET Core: Causes and Fix

Your SignalR hub works, messages arrive, and everything looks healthy in development. Then you ship to production behind a reverse proxy, open the browser Network tab, and see it: every message is rid

Coding Droplets

About

Available for

Coding Droplets's blogs

Recently published

7 Common Mistakes Unit Testing ASP.NET Core Controllers (And How to Fix Them)

Managing LLM Conversation History in .NET: Root Cause and Fix for Context Window Overflow

How to Evaluate LLM Output in .NET APIs: A Real-World Walkthrough

How to Build a Job Queue in .NET with PostgreSQL SKIP LOCKED: A Real-World Walkthrough

SignalR Falls Back to Long Polling in ASP.NET Core: Causes and Fix

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Coding Droplets

About

Available for

Coding Droplets's blogs

Recently published

7 Common Mistakes Unit Testing ASP.NET Core Controllers (And How to Fix Them)

Managing LLM Conversation History in .NET: Root Cause and Fix for Context Window Overflow

How to Evaluate LLM Output in .NET APIs: A Real-World Walkthrough

How to Build a Job Queue in .NET with PostgreSQL SKIP LOCKED: A Real-World Walkthrough

SignalR Falls Back to Long Polling in ASP.NET Core: Causes and Fix