Your API Is Working Fine Until the Client Retries: Understanding Idempotency in Backend Systems

Nemotron-Personas-Finance-Japan: A Synthetic Dataset Capturing Japan's Demographics and Financial Context

A Blog post by NVIDIA on Hugging Face

On EventStorming, collaboration, LLMs and how to glue that

Can we make collaboration great again?

Payments Canada announces launch of Canada's Real-Time Rail (RTR) payment system

The new system will enable participating financial service providers to clear and settle payments in real time, providing a made-in-Canada platform for future innovation and prosperity.

Friendly Fraud Prevention for Developers: What to Log, Block and Automate

Friendly fraud, where a real customer disputes a legitimate charge, accounts for around 20 to 30% of fraudulent disputes per Visa and 75% of online fraud per Mastercard. Winning disputes requires logging IP address, device ID, account ID and shipping address at checkout and keeping them for at least 13 months. Visa's CE3.0 rules require two undisputed prior purchases on the same card from 120 to 365 days earlier sharing data points, while Mastercard's First-Party Trust needs device, delivery and identity factors and a lookup service responding within 2.5 seconds. The piece walks through Node.js code for checkout logging, risk scoring, a pre-fulfillment hold gate, pre-dispute order lookup endpoints, webhook-driven refunds and evidence automation, plus a comparison of building in-house versus using tools like Stripe Smart Disputes or Chargeflow.

Video Encoding for the Web in 2026: Part 2: Methodology and Tooling

This is Part 2; see Part 1 for an introduction. Methodology My big goal here is to be able to repeatably measure how well various video encoder settings work against the types of videos that I care about. In 2025, I took a single 1080p test video1Included as deception1, below. and ran around a thousand tests against it to see how well various H.265 encoding options worked. This time, I wanted to test against multiple videos and multiple encoders to get a much wider view of encoding performance. Before I started this, I wanted to improve my tooling so I wasn’t wasting time or measuring the wrong thing.

Learn How to Design Software Systems Like a Senior Engineer in Our New Course

Bối cảnh: Thiết kế hệ thống là kỹ năng quan trọng đối với các kỹ sư phần mềm hiện nay, đặc biệt khi ứng tuyển vào vị trí senior hoặc staff-level. Nguyên nhân kỹ thuật: Khóa học mới này tập trung vào các nguyên tắc thiết kế architecture và giải quyết bài toán scale cho hệ thống thực tế. Hệ quả: Học viên sẽ nắm vững cách thiết kế hệ thống như một senior engineer, tăng khả năng ứng tuyển vào các vị trí cao cấp. Điều đáng học: Khóa học bao gồm các case study thực tế với công nghệ như microservices, load balancing và database sharding.

Khóa học này giúp bạn nâng cao kỹ năng thiết kế hệ thống phần mềm như một kỹ sư senior.

How Anthropic Redesigned Source Control

In this article, we’ll look at the architecture behind Scion.

Outbox Pattern in .NET With Postgres: Concurrent Workers vs the WAL

An API can save an order and crash before publishing the message that tells other services about it.