Khalil Dev✓

Hey 👋 If you’re in - Tech - Web Development - Software Engineering - AI Say Hello and let’s connect and grow 🤝

BE Interview Question: Your API is getting 100k requests per second. Server is choking. Users are complaining. You have 15 minutes to fix it. What’s the first thing you do?

There several issue with this code that’s needs proper handling: 1- Coupons can be stacked infinitely.
2- Total can become negative. 3- Floating-point math causes rounding errors. 4- Date type comparisons are unreliable. 5- Concurrent requests cause race conditions. Anything else is missing?

یه مصاحبه کردم طرف کد به این سادگی نمیتونست مشکلش تشخیص بده. اگه برنامه نویسی که زیر ۱۰ ثانیه باید بگی... اگه وایب کدری که این پست رد کن

Interview Question: To implement immediate server-side session revocation for a high-security app, our team wants to use stateless JWTs to preserve API scalability. How do you securely handle user logout?

SQL Interview Question: Which aggregate function returns the number of non-NULL values in a specified column? A. COUNT B. SUM C. DISTINCT

Developers Which HTTP method is designed to be read-only (safe) and produces the exact same server state regardless of how many times the request is repeated? A. GET B. PATCH C. DELETE D. POST

BE Interview Question: User traffic doubles overnight, but database CPU remains low. Why are checkouts timing out for users?

JavaScript Developers In below code, why the first one is true but the second one is false? What's the reason?

Developers Which is better than React for Frontend development? - Vue - Angular - TanStack

AI can write code all day - with all hype. But companies will still reject you on the spot if you can’t explain your solution for a simple array problem.

💡 JavaScript tips map vs filter vs reduce Array methods.

System Design Interview Question: A Redis cache cluster crashes during a traffic surge, overloading the database. How do you prevent this thundering herd?

Honestly AI-generated code can have: ✅ Clean naming ✅ Beautiful abstractions ✅ 100% test coverage ✅ Great documentation ✅ No obvious bugs …and still be completely wrong.

It was a good jump after long time. Thank you everyone for your support. Keep posting you’ll get too..

But the problem is the count still isn’t updated. I don’t know why. 218.3k is from 24 Oct

It’s X And 4.6M impressions in one day is crazy.

@X @grok can you check?

Developers, What is the correct HTTP response code for DELETE operation in REST API?

Good morning X fam Have a productive week ahead.

Generative AI vs Agentic AI 👉 Generative AI creates the answer. 👉 Agentic AI completes the task. Generative AI: • Writes code • Summarizes reports • Creates images Agentic AI: • Plans steps • Uses tools • Checks results • Takes actions Think: Prompt → response Goal → plan → action → result Agents often use generative AI. More detail here: