Kushal Vijay

You delete a tweet. It disappears from YOUR screen instantly. But it stays live for 30-60 seconds on everyone else's feed...💯

This isn't a bug. It's preventing something way worse.🚨

You tweet something controversial. It goes viral. 10,000 retweets in 5 minutes and out of panic you delete that.

If Twitter/X deleted it instantly from EVERYONE'S screen at once? 👀

They'd need to send 10,000+ deletion commands to 10,000+ different servers simultaneously.🌐

Distributed systems can't guarantee instant consistency across millions of devices.💻

Let’s learn about CAP theorem today, you can't have Consistency + Availability + Partition tolerance all at once.

Twitter showsyou instant deletion (good UX), but propagates slowly.

That 30-60 second delay, how it’s helpful. In 2014, people discovered they could:
1. Post illegal content
2. Screenshot it with timestamp
3. Delete it instantly
4. Claim "I never posted that, must be Photoshop"

The delay creates a proof window where others can screenshot the real tweet with a timestamp. Twitter turned a technical limitation into a security feature.

The same system that seems broken (slow deletion) prevents false accusations and evidence tampering. 🗣️

Distributed systems trade-off. But the delay also creates evidence windows preventing false denial attacks.

Other examples:
- WhatsApp: "Deleting for everyone" only works within 1 hour (prevents abuse)
- Gmail: "Undo send" gives 30-second window (prevents regret, creates proof)
- GitHub: Deleted repos stay in cache for 90 days (prevents supply chain attacks)

Every "flaw" in system design might be a feature you don't understand yet.
If you like this one, I’ll be covering a lot more interesting usecases in the upcoming posts.📈

Can you tell why YouTube buffers at 240p but Netflix never buffers at 4K?

hashtag#techcareers hashtag#engineering hashtag#story hashtag#career

1 week ago | [YT] | 133

Kushal Vijay

IIT placements started December 1st and Sharma ji ka beta already got 2.8 crore offer
Now every parent is questioning their child's future...💯

The WhatsApp forwards have begun. "Beta dekho, IIT BHU mein 17 students ko 1 crore+ mila!" 🗣️

What they DON'T forward: 1,701 students registered. Only 17 crossed ₹1 crore. That's 1%. 📉

Highest package: ₹2.8 crore (Da Vinci Trading)
IIT BHU: Highest ₹1.67 crore, minimum ₹47.19 lakh
IIT Roorkee: 8 international offers, 428 domestic offers in FIRST SLOT alone

Now Here's What Your Family Group Won't Tell You:🔇

- 20+ companies BANNED from placements this year bcz They cancelled job offers last year. Some as late as June/July - right before joining dates.

- Students with confirmed offers couldn't appear for other interviews. Then offers got revoked. Career destroyed. Mental breakdown. A year wasted.

- IIT students are REJECTING ₹20-25 lakh PPOs because they think they're "too low." Why? Because aunties are comparing them to the 0.1% who got ₹2.8 crore.

- Da Vinci Trading, NK Securities, Optiver, IMC Trading, APT Portfolio. Not Google. Not Microsoft. Trading firms that hire 2-4 students per IIT.

- They want elite math olympiad kids who can code algorithms that move billions in milliseconds. That's NOT most students. And that's perfectly fine.

- IIT Delhi: 1,200+ offers for 1,150 students. Almost everyone is getting placed. Great packages by any standard. But it FEELS like failure when your relatives compare you to 1 student out of 1000.

Stop measuring your average against someone else's outlier.❤️

To every parent: Your child getting placed from IIT is incredible. Stop comparing them or raising expectations to the 0.1%. You're destroying their mental health.

Are you celebrating your placement or feeling inadequate because of someone else's crore package?

#iit #placements #career #story

3 weeks ago | [YT] | 151

Kushal Vijay

Your salary just changed and nobody told you...1

Government implemented new labour codes on November 21st and your next payslip will look very different.

The govt just consolidated 29 labour laws into 4 codes. Sounds boring until you realize this affects EVERY salaried employee in India.

1. Your Take-Home Salary Is About To Drop

New rule: Basic salary must be minimum 50% of CTC. Most companies kept basic at 30-35% to reduce PF deductions and give you more in-hand salary. Your CTC stays the same. Your bank account sees less money.

2. Fixed-Term Employees Gratuity After 1 Year Permanent employees still need 5 years but Fixed-term/ contract now eligible after just 1 year. Companies that hire on contract basis will see costs jump 20-30%. Slower hiring for freshers initially as companies

adjust budgets.

3. Gig Workers Finally Get Social Security Platform workers (Swiggy, Uber, Zomato) now covered under social security. Aggregators must contribute 1-2% of annual turnover for worker benefits. This is huge for 24 million gig workers in India.

Companies are quietly restructuring salary components right now This will slow down fresher hiring because employees cost will imcrease 20%

#labourlaws #news #india

3 weeks ago | [YT] | 77

Kushal Vijay

If Microsoft, Google, Amazon doesn't come to your College for Hiring.
They are hiring Off-Campus right now
yt.openinapp.co/8nleg

1 month ago | [YT] | 73

Kushal Vijay

Spoke at UP's first LinkedIn Summit yesterday. 700+ students. 💯

Thanks to Tisha and Aviral for the opportunity. Kudos to the fellow speakers Darika, Riya, Vrinda, Vishnu, Shawrya for sharing their experiences.❤️


Grateful to Mr. Parth Parth and the entire team for honoring me with the “AI Innovator of the Year” award.🚀

Also met the viral sensation and a great comic, Ashish Solanki.

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1 month ago | [YT] | 98

Kushal Vijay

HAPPY Diwali to you All 🪔❤️

I wish this diwali brings you a lot of joy and growth. Rooting for your success ✨️

2 months ago | [YT] | 61

Kushal Vijay

I've been coding in Python for 5 years. And This man changed everything for millions of developers with Python...💯

Sebastián Ramírez. The creator of FastAPI.🌐

Used by Microsoft, Uber, Netflix. One of the most impactful Python frameworks in the last decade.

I expected ego. I expected "I built something huge" energy. What I got? Pure humility and obsession with giving back.❤️

The Framework That Changed Python Forever FastAPI didn't exist 7 years ago. Now it's the default choice for building APIs. Sebastián built it because he was frustrated with existing tools.

The Keynote That Hit Different Watching him speak at PyCon last week, Just pure excitement about Python's future and how we can all contribute to open source.

You don't need permission to build something impactful. You don't need a degree from Stanford or 10 years at FAANG.📈

Sebastián built FastAPI while working a regular job. Your side project today could be someone's production tool tomorrow.

I also gave a talk at PyCon last week about Weaponizing MCP Servers: Production-Ready AI Agent Infrastructure with Python.. Sharing my learnings on the same stage where legends share their work? Surreal.✨

What's that one tool that made you fall in love with development? Drop it below. 👇

2 months ago | [YT] | 119

Kushal Vijay

Just Spoke At The Biggest Python Conference in Hiroshima, Japan. You Won't Imagine The People I Met Here... 💯


30 minutes on stage talking about building MCP servers that don't crash in production.

But The real value happened during the coffee breaks and networking sessions.🍵

The diversity of companies in one room was insane:
Met engineers from Bloomberg handling massive financial data pipelines, Rakuten scaling e-commerce infrastructure, JetBrains building developer tools, Mercari, Inc.'s marketplace systems, Snowflake's data platform teams, CodeRabbit, Streamlit shipping AI features, HENNGE group and Startups based out of Tokyo and so many other developers.🧑🏻‍💻

Talked about the next big thing and job opportunities at these companies. More in upcming videos.

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2 months ago | [YT] | 67

Kushal Vijay

it took me 5 years to make this post ❤️

Ye jeet aap sab ki hai, thank you for all the love and support.

Bhot durr jana hai abhi 🚀

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3 months ago | [YT] | 189

Kushal Vijay

Apprenticeships by Google and Microsoft are active, Recommend all the recent graduates and freshers to apply.

Links available in our Telegram Group:
t.me/vijaykushal

3 months ago | [YT] | 15