Nkoin Engineering Publications
Developer Resources & Engineering Notes

Clean Tutorials on Web Dev & Infrastructure

Welcome to nkoin.com. We are an independent, developer-first technology publication focused on software engineering, cloud infrastructure, secure API development, and automated tools.

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Featured Publications

Clear blueprints for back-end reliability, caching, and mail server deliverability standards.

EMAIL PROTOCOLS 5 Min Read

Demystifying SPF, DKIM, and DMARC: Guarding Domain Authority

Learn how to properly configure your DNS records to eliminate spoofing vulnerabilities and protect your outbound business mail stream.

Published: 2026-05-18
WEB ENGINEERING 8 Min Read

Implementing Token Bucket Rate Limiting for Robust Web APIs

A step-by-step developer tutorial on protecting server resources against crawler floods and malicious request spikes.

Published: 2026-04-12
INFRASTRUCTURE 6 Min Read

Decoupling Event-Driven Workloads with In-Memory Queues

Why in-memory pub/sub message brokers are essential for preventing application lag during database read/write lock conditions.

Published: 2026-03-24

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