Aman

I Defend Systems to Pay My Bills!

[Shubh Jain @shubh19]

Google – 85% rounds are DSA + System Design
Atlassian – 80% DSA + System Design
Amazon – 70% DSA + System Design
Microsoft – 75% DSA + System Design

If you want to clear Software Engineer interviews, the formula is simple System Design and DSA

Here are 16 most asked questions on these topics:

𝗗𝗦𝗔
1. Implement LRU/LFU Cache.
2. Find Median from Data Stream.
3. Word Ladder problem (shortest transformation).
4. Merge K Sorted Lists.
5. Detect Cycle in a Directed Graph.
6. Maximum Subarray Sum (Kadane + variations).
7. Kth Largest Element in a Stream.
8. Design a Scheduler with Task Priorities.

𝗦𝘆𝘀𝘁𝗲𝗺 𝗗𝗲𝘀𝗶𝗴𝗻
9. Design a scalable Chat Application (WhatsApp/Slack).
10. Design a URL Shortener.
11. Design a distributed Notification System.
12. How would you scale a Video Streaming platform?
13. Design a Payment System (like Razorpay/Stripe).
14. How do you design an API Rate Limiter?
15. Design an E-commerce Checkout System.
16. Design a Ride-Hailing app (Uber/Ola).

You are not failing due to lack of preparation, but because your preparation doesn’t match what companies actually test.

[Aman @IamAmanKS]

@Musafirr_hu_yar HNY

[Aman @IamAmanKS]

@ayushi_heree Invest In Myself.

[Aman @IamAmanKS]

Silver is going to meet the same fate. This is a different case from the Gold. Gold is needed for its own inherent value as a backing for currencies other than jewelry.

[Aman @IamAmanKS]

If something becomes this expensive, technological innovation will replace silver in devices. I remember the case of Mica. Mica was indispensable for electronic devices. It had become rare and very expensive. Now you do not need Mica for electronic devices.

[Aman @IamAmanKS]

Learning Stock Market Since Few Months.
Silver is at 150x , Will it Double or Crash in 2026?

[Aman @IamAmanKS]

@adityaxcodes C) Luck

[Aman @IamAmanKS]

@AmanSharma_554 Bhai 2027 mein bhi goals banana hai toh last waala skip kardena.

[Aman @IamAmanKS]

@KunikaKishore Yeah!

[Aman @IamAmanKS]

@dipalitwt Python

[Aman @IamAmanKS]

@_adityaa21 Bro get a Technical Role. It would be difficult for a switch later on.

[Aman @IamAmanKS]

When I joined a Tier-2 college, people said it would be hard to find good connections with seniors. But I was fortunate to meet seniors who guided me and helped me secure a job! Now, I'm trying to become the kind of person I once looked for during my own preparation days.

[Aman @IamAmanKS]

@just_avik lol this has been going on since ages in my college!

[Aman @IamAmanKS]

Try typing "https://t.co/MSHTpHxgkL" into your browser. You won’t land on Perplexity.

You’ll be redirected to… Google Gemini.

When I saw it, I had to double-check.

And honestly? It’s such a classic Google move.

[Aman @IamAmanKS]

Now scale this:
𝟐𝐁+ 𝐮𝐬𝐞𝐫𝐬
𝟏𝟎𝟎𝐁+ 𝐦𝐞𝐬𝐬𝐚𝐠𝐞𝐬/𝐝𝐚𝐲
𝐁𝐢𝐥𝐥𝐢𝐨𝐧𝐬 of real-time ephemeral events flowing through 𝐑𝐞𝐝𝐢𝐬 𝐜𝐥𝐮𝐬𝐭𝐞𝐫𝐬 every second.

[Aman @IamAmanKS]

𝐖𝐡𝐲 𝐝𝐨𝐞𝐬 𝐖𝐡𝐚𝐭𝐬𝐀𝐩𝐩 𝐬𝐡𝐨𝐰 “𝐭𝐲𝐩𝐢𝐧𝐠…” 𝐢𝐧𝐬𝐭𝐚𝐧𝐭𝐥𝐲?
Even if your friend is across the world, the update still reaches you in under 𝟐𝟎𝟎𝐦𝐬.
It’s not magic — it’s 𝐖𝐞𝐛𝐒𝐨𝐜𝐤𝐞𝐭𝐬 and a 𝐠𝐥𝐨𝐛𝐚𝐥 𝐞𝐯𝐞𝐧𝐭 𝐩𝐢𝐩𝐞𝐥𝐢𝐧𝐞.

[Aman @IamAmanKS]

Redis instantly notifies the server (Server B) holding 𝐲𝐨𝐮𝐫 𝐖𝐞𝐛𝐒𝐨𝐜𝐤𝐞𝐭 connection.
𝟒. 𝐑𝐞𝐚𝐥-𝐓𝐢𝐦𝐞 𝐃𝐞𝐥𝐢𝐯𝐞𝐫𝐲 Server B pushes it to your device → you see 𝐭𝐲𝐩𝐢𝐧𝐠… almost instantly.