// category archive

Backend Engineering

3 articles

From PR to Production: How Kubernetes Deployments Actually Work (Single Service + Microservices in the Real World)

Most developers know how to write code. Fewer understand what actually happens after they click “Merge Pull Request.” And even fewer truly understand what…

Nilesh Raut · February 22, 2026 · 6 min read

Backend Dev

Idempotency Explained: How to Design Safe APIs That Don’t Break in Production

Idempotency is one of those topics that looks simple on paper and brutal in production. Most engineers understand the definition. Fewer understand the failure…

Nilesh Raut · February 14, 2026 · 6 min read

Bloom Filter in Express.js (with Real Example) – A Simple Yet Powerful Way to Prevent Duplicate Usernames

Backend Dev

Bloom Filter in Express.js (With Real Example and Dry Run Explained)

🧠 What is a Bloom Filter? A Bloom Filter is a probabilistic data structure used to test whether an element might be present in…

Nilesh Raut · November 5, 2025 · 7 min read