Idempotency Isn't Enough — What I Got Wrong About M-Pesa Reconciliation
A few weeks ago I wrote about handling M-Pesa STK Push timeouts and webhook verification. In the comments, Justin Wilson pushed back on the reconcilia
Curated development tutorials from top sources. Filter by language.
A few weeks ago I wrote about handling M-Pesa STK Push timeouts and webhook verification. In the comments, Justin Wilson pushed back on the reconcilia
TL;DR compilerOptions.paths must not be set (alias imports are not supported) is thrown by Create React App's build-time config validator,
The problem Live cricket scores update fast — sometimes multiple events land in the same animation frame. Wire that straight into setState
Short answer: if an edtech tenant's ownership check finds duplicate DNS proof records after a retried onboarding job, list the records, delete extras
TypeScript + MCP: 45 Tools for Building AI Agent Financial Infrastructure Your AI agent can browse the web, write code, and manage files —
Setting up a fresh mobile workspace can sometimes feel like running an obstacle course. If you’ve ever run npx create-expo-app only to be met with a w
When building Node.js and TypeScript applications, choosing the right data layer tool is crucial for productivity, maintainability, and performance. B
The Shift to React Server Components Moving from a Client-Side Rendered (CSR) architecture like Vite to a Server-Side Rendered (SSR) or Sta
This is a small, easy detail to get backwards, and getting it backwards doesn't throw a clear error, it just means one of your two values silently isn
Choose a transactional email API by how quickly support can distinguish a hard bounce from a missing reset request, then stop another send to that add
Introduction Have you ever written code like this to handle URL search params in React? const searchParams = new URLSearchParams(window.
Candidates can download their results as a PDF: a single session report, a master report covering everything they have done, an interview feedback rep
There are three text-ranking implementations in our app. A reviewer's instinct on seeing that is to consolidate, and for a while mine was too. They ar
We maintain about a hundred JSON files of authored test content. The obvious shape for that is the one everybody starts with: interface Question {
We sell school and university discounts. A school gets an allocation: a code its students can redeem, capped at some number of redemptions, and the ca
Some of our practice tests have chained questions. Question 2 asks for a figure derived from question 1's answer, question 3 builds on question 2, and
We have around 150 scorers, one per practice game, each converting a finished game state into a score. They live under scoring/scorers/ and were writt
Our practice games pull their items from pre-authored question banks. Each bank is a JSON array, ordered easiest first, and the engines rely on that o
Three commits, one evening: 17:39 Show the first score free and let guests play one game per provider 18:05 Let guest plays load their question b
Our interview practice feature works like this: you record five short video answers in the browser, they upload straight to object storage, and then a