computer-science

Incident response automation is a trap. Some things should be automated. Some things absolutely should not be. Getting the line wrong is worse than automating nothing. What to automate 1. Alert enrichment. Before a human sees an alert, automate pulling in related data: recent deploys, dependent service health, historical correlation. Save the human 10 minutes of context-gathering. 2. Known-good r…

I was working on a project a while back where the users had to use the app in three different places. They needed to use it on desktop computers at the office on Android tablets when they were out in the field and on iPhones when they were moving around. This was a problem because we had one team and we did not want to deal with three sets of code. This project made me think about how to make the…

The Quest Begins (The "Why") Ever had one of those days where your API feels like it’s stuck in quicksand? I was building a simple rate‑limiter for a microservice that throttles requests per IP address. The idea was straightforward: every incoming hit checks a counter stored in Postgres, increments it, and if the counter exceeds the limit we return 429. At first it worked like a charm on my lapto…

There is common point of confusion. what's the different between REST API vs. HTTP API in AWS and what's the different between them and a traditional Rest API you write with e.g express in node in the broader software world, a "REST API" is just an architectural pattern built on top of HTTP requests. The confusion comes entirely from AWS-specific marketing terminology . When you are inside the AW…

MVCC, WAL, vacuum, and replication slots under sustained delete load - and how to delete billions of rows without your database noticing Most "how to delete a lot of rows" articles stop at "batch it and delete children before parents." That advice is correct, it's table stakes, and everyone already knows it. This article is about everything after that - the parts that actually decide whether your…

In early 2026, Anthropic researchers ran an experiment with 52 junior developers. Half used an AI assistant to learn an unfamiliar Python library. The other half worked without one. Both groups finished the task. But when tested on how well they understood the code they had just written, the AI-assisted group scored 50% on a comprehension quiz - versus 67% for the unassisted group. That 17-percen…

The blast radius of an API key is not "did it leak." It's "if the agent holding it does the wrong thing, how much of your stack goes with it." A secret scanner answers the first question. Nothing in your toolchain answers the second one before an incident. So I wrote 40 lines that do, offline, from the permission metadata you already have. In short: the blast radius of an API key is set by its pe…

Introduction: The Timeless Nature of Algorithms When you crack open a standard Data Structures and Algorithms textbook, it’s easy to assume the contents are products of the digital age. But here’s the kicker: many of these algorithms were devised centuries before computers existed . Take the Euclidean algorithm for finding the greatest common divisor—it dates back to 300 BCE . Or the sieve of Era…

A few years ago, choosing an ID format was easy. Most of us generated a UUID, stored it in the database, and moved on. Today things are different. Modern applications care about: Database performance URL friendliness Sortability Distributed systems Storage efficiency That's why developers are increasingly looking at alternatives like ULID and NanoID. If you're building APIs, SaaS products, mobile…

react-slotx — Step-by-Step Tutorial This guide will walk you through using react-slotx from scratch. No prior knowledge of slots or portals is required — just basic React. What is react-slotx? react-slotx lets you declare content in one place and render it somewhere else in your React tree. The two key building blocks are: <Slot name="…"> — registers content into a named bucket. <Outlet name="…">…

I already let my AI agent read and repair my self-hosted n8n workflows. So when a client's Make.com scenario started misfiring — duplicate WhatsApp order notifications, fired in bursts — my first instinct wasn't to log into the web UI. It was: can I give the agent the same remote access to Make that it has to n8n? Make.com shipped both a REST API and an MCP endpoint. So yes. But getting from "the…

A Python package and library often seem interchangeable and we hardly pay attention to them in our daily use. But indeed they are very different in technical practice. We will look at the inherent differences between them in this post. But first, let us look at what a Python module is. Modules A Python module, in the simplest terms, is a python file. For example, cleaning.py . While they are most…

The README lies. Not on purpose. It was true the day someone wrote it. Then the function got renamed, the flag got removed, the env var changed, the endpoint moved — and nobody touched the docs, because nobody's job is the docs. So the README quietly drifts away from the code, and the first person to find out is whoever copy-pastes the snippet that no longer works. If you've ever opened a doc pag…

My journey as a Frontend & Full Stack Developer building modern web applications. As a developer, I've spent a lot of time building applications using React.js. React is an amazing library, but as projects grew larger, I started facing challenges related to SEO, performance, routing, and backend integration. That's when I started exploring Next.js seriously. After building multiple projects with …

You get a scenario question on the SY0-701. A company's database can lose at most 15 minutes of transactions, and it has to be back online within 2 hours of an outage. The question asks which metric describes the 15 minutes. If you have to stop and think, you are not alone. The recovery and risk metrics are some of the easiest points on the exam to bank and some of the easiest to throw away, beca…

hey dev.to, so I am Mathéo, a 2nd year CS student at EPITECH Nancy (France). I want to share a project I have been building for the last few months: ZamSync . Basically, it is a lightweight synchronization engine written in Rust. It is made for places where the internet is either extremely slow, drops every five minutes, or does not exist at all (think remote areas, Raspberry Pi nodes, offline-fi…

How WSO2 API Manager Transforms API Analytics & Monitoring Published on Dev.to — by Chamath H. Gunawardhana The Problem with Flying Blind Imagine you've built and deployed a set of APIs powering your mobile app, your partner integrations, and your internal services. Traffic is flowing — but do you know which APIs are being called the most? Which ones are failing? Who is consuming the most bandwid…

1. One man's constant is another man's variable. 2. Functions delay binding; data structures induce binding. Moral: Structure data late in the programming process. 3. Syntactic sugar causes cancer of the semicolon. 4. Every program is a part of some other program and rarely fits. 5. If a program manipulates a large amount of data, it does so in a small number of ways. 6. Symmetry is a complexity-…

How to Use Python's logging Module Like a Pro — From Beginner to Production Setup Python's built-in logging module is one of those tools every developer knows about, but few use well. When I started, I used print() everywhere. When I moved to production apps, that approach didn't scale. Here's what I learned about logging in Python, from basic setup to production-ready patterns. The Minimum Viabl…

If you've ever used Django, you know the feeling: one command, and you have an admin panel, an ORM, form validation, middleware, session handling — everything just works. Then you try Rust web development, and you're back to assembling pieces yourself. That's why I built Runique : a batteries-included web framework for Rust, inspired by Django's philosophy, built on top of Axum and Tokio. Why "Dj…