PhD in Economics Scholarships in Canada With CAD $40,000 Annual Funding

Why UPI Fraud Is a Temporal Logic Problem (and How PLCs Solved It 50 Years Ago)

UPI fraud detection is probabilistic and post-authorization. The money moves, then a model scores it 0.73 and a fraud analyst looks at it in two days.

• UPI fraud detection uses probabilistic methods, with post-authorization review
• PLCs introduced in 1981, trigger immediate, irreversible response to hard faults
• Python tool examines velocity, dwell times, and sequence for UPI transactions

2h ago ·dev.to

Debugging Silent Data Corruption: Timezone Conflicts Across Microservices and the Pitfall of In-App Self-Provisioning

Debugging Silent Data Corruption: Timezone Conflicts Across Microservices and the Pitfall of In-App Self-Provisioning Handling timestamps across heterogeneous architectures is notoriously deceptively…

2h ago ·dev.to

React Email Tests Need a Fixture Factory

Email verification is one of those React features that looks simple in the browser and becomes messy in CI. A form submits, a backend sends a message, and the test waits for a link.

• Fixtures treat email verification as a test fixture with lifecycle
• Shared inbox causes flakiness when tests run concurrently
• Fixture factory assigns delivery lease to each verification worker

2h ago ·dev.to

Building physics-based 3D dice in the browser (three.js + cannon-es, PWA, 11 languages)

I built 3DRoll, a free dice roller where the dice actually tumble. Here's how it works. Why physics instead of Math.random() The easy way is to choose the result first and animate the die to it.

2h ago ·dev.to