Abhishek Singh logoAbhishek Singh
JourneyWorkBlogContact
Book a call
Abhishek Singh logoAbhishek Singh

Full stack and AI solutions engineer. I build software and automation that make businesses run faster, and write about the engineering behind it.

Explore
HomeJourneyWorkBlogContact
Writing
AI DevelopmentBackend EngineeringAI-Assisted DevelopmentAll posts
Get in touch

Have a project or a problem worth solving? Tell me what is slowing your business down and I will tell you honestly how I would fix it.

Contact me→
© 2026 Abhishek Singh. All rights reserved.
Available for new projects
The blog

Thoughts on building software

Long form thinking on architecture, debugging, AI in production, and the messy intersection of code and business. The trade-offs, failures, and decisions that do not fit into tutorials.

29
ARTICLES
11
TOPICS
Weekly
NEW POSTS
Stay in the loop

New posts, straight to your inbox

One email when something new goes up. No spam, unsubscribe anytime.

Showing 1 of 1 article
Prevent Duplicate Payments: A Developer's Guide
Backend Engineering · 10 min read
1 months ago

Prevent Duplicate Payments: A Developer's Guide

Duplicate charges are one of the most damaging bugs in any checkout, and the code usually looks correct. This guide explains why duplicate payments happen and shows you, step by step with code, how to prevent duplicate payments on any stack.

idempotencyprevent duplicate paymentswebhooks+2 more
Read