5 async/await Mistakes That Slow Your JavaScript Code
Sequential awaits, await in forEach, missing Promise.all: these 5 async/await mistakes silently slow your JavaScript. Here's how to spot and fix each one.
8 min readZeeshan Tofiq
javascript
8 articles
npm Scripts You're Probably Not Using (But Should Be)
pre/post hooks, cross-env, npm-run-all, argument passing, and built-in variables: the npm script patterns developers Google one at a time, in one place.
8 min readZeeshan Tofiq
React Fiber Architecture Explained: How React Renders UI
React Fiber is the engine behind every React render. Learn how it works: render phase, commit phase, Lanes, and double buffering, explained with analogies.
12 min readZeeshan Tofiq
30 Next.js Interview Questions and Answers (2026)
30 Next.js interview questions with full answers: App Router, Server Components, use cache, PPR, Turbopack, and auth. Updated for Next.js 15 and 16.
22 min readZeeshan Tofiq
30 Node.js Interview Questions and Answers (2026)
30 Node.js interview questions with full answers: event loop, streams, clustering, worker threads, memory leaks, and security. Updated for 2026.
26 min readZeeshan Tofiq
Bun 1.3's Built-in SQL and Redis Clients: Do You Still Need pg, mysql2, and ioredis?
Bun 1.3 ships built-in Postgres, MySQL, SQLite, and Redis clients. Side-by-side code vs pg, mysql2, and ioredis, plus when migrating actually makes sense.
18 min readZeeshan Tofiq
45 OOP Interview Questions and Answers (2026)
45 OOP interview questions covering the four pillars, SOLID principles, and design patterns with real code in Java, Python, JavaScript, and C#. Updated for 2026
39 min readZeeshan Tofiq
Temporal API in Node.js APIs: Storing, Serializing, and Returning Dates Correctly (2026)
How to store, serialize, and return JavaScript Temporal API types correctly in a Node.js REST API with PostgreSQL. Real Express code and examples, 2026.
12 min readZeeshan Tofiq