I Spent Months Building a Financial Reconciliation Engine That Processes 10 Million Records in Under Five Minutes
A few months ago I decided to build a reusable engine to make financial reconciliation easier. I had already done reconciliation work for companies i
go
dev.to
Jul 18, 2026
Building a real-time browser MMORPG with Three.js, Rust/Wasm, and Durable Objects
Realm of Echoes is a real-time 3D fantasy MMORPG that runs in a normal desktop browser tab. Players can choose a Warrior or Mage and enter as a guest,
rust
dev.to
Jul 18, 2026
Juni: Python and C++ United in JunoEngine WebApp
Hello Devs!: Juni – a Python-feel systems language that compiles to WASM for games built on a custom software called JunoEngine
URL
https://junoengi
rust
dev.to
Jul 18, 2026
When SSH to Xserver suddenly stops working, it's fail2ban — the official confirmation and a safer reconnection check
If you run WordPress maintenance for clients on Xserver, sooner or later you hit this: SSH was working fine this morning, and now your connection dies
php
dev.to
Jul 18, 2026
Why We Moved Video Metadata Primary Keys to PostgreSQL UUID v7 at Scale
Last quarter our ingestion pipeline started deadlocking during peak hours. Every 20 minutes, eight regional cron workers wake up, pull fresh streaming
php
dev.to
Jul 18, 2026
Stop Begging Your LLM for Valid JSON: Self-Correcting Structured Output in Spring AI 2.0
Every developer who has worked with LLMs has been there. You ask the model for JSON. You describe the schema. You say "please only respond with valid
java
dev.to
Jul 18, 2026
How to Add Redis Caching Without Touching Your Business Logic
A practical guide to the Decorator Pattern in Go — and why "how many files did this change touch" is the real test of clean architecture.
go
dev.to
Jul 17, 2026
🇺🇸 What if there was an admin interface built on top of RubyUI? That's how RubyUI Admin was born.
We're living in an exciting time for software development.
With AI, generating code, exploring ideas, and building new projects has never been easier
ruby
dev.to
Jul 17, 2026
🇧🇷 E se existisse uma interface admin baseada na RubyUI? Assim nasceu a RubyUI Admin.
Vivemos um momento curioso no desenvolvimento de software.
Com IA, gerar código, estruturar projetos e até explorar novas ideias nunca foi tão rápido
ruby
dev.to
Jul 17, 2026
I deleted tailwind-merge from production
I deleted tailwind-merge from production
While auditing dependencies in my monorepo, I ran an experiment that bothered me more than it shou
rust
dev.to
Jul 17, 2026
Building a signed handoff protocol for AI coding agents
Building a signed handoff protocol for AI coding agents
If you run more than one AI coding agent, you've hit this: Claude Code (or Codex, o
go
dev.to
Jul 17, 2026
[Rust Guide] 17.3. Implementing an Object-Oriented Design Pattern
If you find this helpful, please like, bookmark, and follow. To keep learning along, follow this series.
17.3.1 The State Pattern
The stat
rust
dev.to
Jul 17, 2026
[Rust Guide] 17.2. Using Trait Objects to Store Values of Different Types
If you find this helpful, please like, bookmark, and follow. To keep learning along, follow this series.
17.2.1 Requirements
This article
rust
dev.to
Jul 17, 2026
How to Evaluate AI Agents with an LLM-as-a-Judge Harness in Python
In this tutorial, I'll show you how to evaluate a local AI agent with a simple, repeatable evaluation harness. The harness runs the agent against a se
python
freecodecamp
Jul 17, 2026
How to Create Accessible Modals and Pop-ups Using HTML, CSS, and Minimal JavaScript
Creating pop-ups and modals on your site can be a complicated process. And it often requires a lot of boilerplate code to get started. But the real ch
javascript
freecodecamp
Jul 17, 2026
How to Build a Browser-Based PDF Redaction Tool Using JavaScript
PDF documents are frequently used to share invoices, contracts, reports, legal records, customer documents, financial statements, and internal busines
javascript
freecodecamp
Jul 17, 2026
How to Build an Internal Developer Platform: A Complete Guide to Backstage, ArgoCD, and Crossplane
Every fast-growing engineering team eventually hits the same wall. A developer needs a new staging environment, so they file a ticket. The platform te
general
freecodecamp
Jul 17, 2026
Goroutines and channels
Goroutines and channels
While building RagPack, I needed a file worker that would parse file chunks and write them into LanceDB, an embedde
go
dev.to
Jul 17, 2026
Building AI Agents in PHP: Tool Calling with Laravel
The problem: chat that can only talk
The chatbot from earlier in this series can answer questions, but ask it "how many orders did we ship
php
dev.to
Jul 17, 2026
How Neural Machine Translation Works: Build Your Own Translation App with React Native and QVAC
For the past 10 years, we've experienced a massive improvement in translation technologies. We went from robotic-like translations to systems that not
javascript
freecodecamp
Jul 17, 2026