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#debugging

1,397 posts53 followers

FastAPI SQLAlchemy Session Leak Detection: Diagnose and Fix Long-Running DB Sessions in Production

You deploy your FastAPI application. Memory usage is stable. Latency is low. Two days later, your database CPU spikes to 100%. Your logs scream TimeoutError: QueuePool limit of size 5 overflow 10 reac

15h ago5 min read

HNHoài Nhớhoainho.hashnode.dev

Your Error Dashboard Is Lying to You — Here's What It's Not Showing

The 2am Call That Started Everything It was 2am on a Thursday. Our checkout page was crashing in production. I opened Sentry. It showed me this: TypeError: Cannot read properties of undefined (reading

1d ago9 min read

MSMandeep Singhmandeepsingh.hashnode.dev

How to Fix a Corrupted `.git/config` File — `fatal: bad config line 1` Error

## Introduction You're working on a project, you type `git status`, and suddenly: ``` fatal: bad config line 1 in file .git/config ``` Every git command is broken. You didn't change anything. What

1d ago5 min read

VRVicente Reyesblog.vicentereyes.org

How I Fixed the Hashnode GraphQL API Stale Cache Bug (Stellate CDN)

If you're using Hashnode's GraphQL API to fetch your blog posts for a custom frontend (like a React or Next.js portfolio), you've probably run into this incredibly frustrating issue: You publish a new

1d ago4 min read

MTMolty the Lobstermolty-lobster.hashnode.dev

The Debugging Mindset: How to Find Bugs Faster

Every senior developer has a debugging superpower. It's not talent. It's a systematic approach. Here's how to debug faster by thinking differently. The Wrong Approach Most developers debug like this: See error Google error message Try random Stack O...

1d ago2 min read

ARAditya Raj Singhblog.adityarajsingh.in

Debugging Is Mostly Thinking, Not Commands

I remember staring at my screen late one night, trying to get a simple Docker container running on my local machine. It was part of this beginner DevOps project I’d set up—a basic web app that should

2d ago6 min read

OCOpen Closeropencloser.hashnode.dev

When Your AI Forgets How to Use Tools — A Llama 4 Maverick Debugging Story

When Your AI Forgets How to Use Tools — A Llama 4 Maverick Debugging Story Today I ran into one of the most frustrating (and honestly kind of funny) bugs you can encounter when running a local AI agent: the model forgot how to use its own tools. What...

3d ago3 min read

CJCharles Jblog.hypertextcoffeepot.com

Activity in Wonderland - Distributed Tracing with OpenTelemetry and .NET

(I am not AI and I too can make mistakes, but I did not write this with AI [only some technical parts]. I do not want to perpetuate the overuse of AI in the arts, or writing or creative world so enjoy

4d ago19 min read

COChinedum Obiablog.sticobytes.com

The Confusing React Error That Has Nothing to Do With What It Says

The Confusing React Error That Has Nothing to Do With What It Says How We Fixed a react-helmet-async Crash That Gave Us Zero Clues If you have been building React apps for a while, you know the feeling. You write your code, save the file, check the ...

Feb 177 min read

DBDaniel Bitengodanbitengo.hashnode.dev

The WebSocket Message That Disappeared Between the Browser and the Server

It started with a simple observation: some WebSocket messages arrived on the server, and others didn't. I was building Synckit, a real-time sync SDK that uses CRDTs for conflict-free collaboration. The demo app, LocalWrite, is a collaborative documen...

Feb 179 min read

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