Curated developer articles, tutorials, and guides — auto-updated hourly


Recently, I switched to another bank, and after setting up the online banking credentials and trying...


How Cassandra's LSM engine works end to end - CommitLog, Memtable, SSTable, Bloom filters, and compa...


By Design — Episode 04 In 2009, Salvatore Sanfilippo had a problem. His startup, LLOOGG, was a...

I built a tool to visualize what happens after you upload a file (queue, worker, logs). Backend...
![[Nestia] Do you have Swagger? AI can build your entire frontend. Swagger is the best context and harness.](https://media2.dev.to/dynamic/image/width=1000,height=420,fit=cover,gravity=auto,format=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Farticles%2Fuwdt2g02mmz8rbwljpkq.png)

Preface If your backend has an Swagger document, you already have everything AI needs to...


MCP servers are getting more attention for a reason. Here is why developers should stop ignoring the...


AI coding agents have opened app development to a lot of new people. Vibe coders, without a skilled....


Once the project grows, schema design, resolver boundaries, custom scalars, and generated code...


Three weeks ago I shared an early version of this project and got a lot of thoughtful feedback. I'v...


Why this series exists If you are a backend engineer, you already know how to build...


This blog was originally published on Descope. If your app is built on Firebase, authentication...


"The most dangerous phrase in the language is 'We've always done it this way.'" — Grace Hopper PHP...


If you've worked with designers, you know the routine. They hand you PDF templates: invoices,...

In payment systems, duplicate processing is not a theoretical problem. It happens in ordinary, borin...


What a Django, Flask, or FastAPI developer needs to stop doing, keep doing, and start doing when the...


WHAT MOST PEOPLE DON'T REALIZE ABOUT BANKING SOFTWARE When people think about software for...


Python still owns model training. But the 2026 AI serving layer, gateways, agent runtimes, and obser...

A practical architecture pattern for systems where one user can own, join, and operate multiple...


One goroutine calls cancel(). Every goroutine stops. Without any of them talking to each other. In....


There's a category of bugs that don't show up in tests. They don't throw errors. They don't crash...


Most telemetry pipelines look clean in architecture diagrams. Devices publish data. A collector...


There is a file in almost every .NET project that everyone on the team is quietly afraid of. It...


Abstract Financial systems are often designed around strict correctness guarantees....


This is a bonus post in the AuthShield series - a production-ready standalone authentication...