Articles

Debounce

Terraform - AWS

A brief tutorial on terraform

Lets Revise Javascript - 1

The JavaScript concepts interviewers use to make people fail: closures, this, prototypes, the event loop, coercion, and hoisting, with tricky output puzzles.

Next.js Caching in 2026: From the Four-Layer Model to use cache

A beginner-to-advanced guide to Next.js caching: the four cache layers, the RSC payload, Cache Components, and when revalidateTag beats updateTag.

Node.js Memory, Garbage Collection & Production Failures

How Node.js memory really works: the V8 heap, garbage collection, memory leaks, OOM crashes, and diagnosing it all in production on EC2 and ECS.

Authentication and Authorization, Explained: The Interview-Ready Deep Dive

A beginner-to-advanced guide to authentication and authorization: password hashing, sessions vs JWTs, access and refresh tokens, OAuth 2.1, and passkeys.

API Integration in JavaScript: Reading Responses, Handling Errors, and Stripe

Read API responses the right way: res.json() vs res.text(), error handling, timeouts, retries, React data fetching, and real Stripe payments and webhooks.

DNS Records for Email: SPF, DKIM, DMARC, and How Mail Authentication Works

How DNS really works for email: nameservers, SPF, DKIM, and DMARC explained, the attacks they stop, and the exact records for Google Workspace, SES, Mailgun, and Cloudflare.

NodeJS Fundamentals

Master Node.js for interviews: the event loop, async patterns, streams, concurrency, and the beginner traps that quietly sink candidates. With worked examples.