𝗗𝗔𝗧𝗔 𝗦𝗧𝗥𝗨𝗖𝗧𝗨𝗥𝗘𝗦 𝗔𝗡𝗗 𝗔𝗟𝗚𝗢𝗥𝗜𝗧𝗛𝗠𝗦

If anyone preparing for senior or higher roles in product base companies , they can follow on linkedin as i will posting the content/my learning there more offen , which can help people to learn fast by just reading the post.

1.47K viewsKanhaiya, 06:34

https://www.linkedin.com/posts/kanahaiya-gupta_your-laptop-has-never-talked-to-amazons-share-7486450731999449089-dQpA/?utm_source=social_share_send&utm_medium=member_desktop_web&rcm=ACoAAAnABVQBlknMXqfQbboPiNxNmcKfRLyBNs8

How TCP Creates the Illusion of Internet Reliability | Kanahaiya Gupta posted on the topic | LinkedIn

Your laptop has never talked to Amazon's server. It talked to something far less trustworthy.

The Internet.

Packets get:

❌ Lost
⏳ Delayed
🔁 Duplicated
⚠️ Corrupted
🔀 Delivered out of order

𝗜 𝗰𝗼𝘃𝗲𝗿𝗲𝗱 𝘁𝗵𝗶𝘀 𝗶𝗻 𝗖𝗵𝗮𝗽𝘁𝗲𝗿 𝟭 - 𝘁𝗵𝗲 "$𝟭𝟬𝟬𝟬 𝗰𝗵𝗮𝗿𝗴𝗲 𝘁𝗵𝗮𝘁 𝗺𝗮𝘆𝗯𝗲 𝗱𝗶𝗱𝗻'𝘁…

1.46K viewsKanhaiya, 16:03

𝗗𝗔𝗧𝗔 𝗦𝗧𝗥𝗨𝗖𝗧𝗨𝗥𝗘𝗦 𝗔𝗡𝗗 𝗔𝗟𝗚𝗢𝗥𝗜𝗧𝗛𝗠𝗦

https://www.linkedin.com/posts/kanahaiya-gupta_systemdesign-distributedsystems-tcp-share-7486775565182660608-u1ef/?utm_source=social_share_send&utm_medium=member_desktop_web&rcm=ACoAAAnABVQBlknMXqfQbboPiNxNmcKfRLyBNs8

The Hidden Cost of TCP Connections in Distributed Systems | Kanahaiya Gupta posted on the topic | LinkedIn

Your code runs in 5ms. Our API takes 150ms. So where did the other 145ms go? 🤔
⠀
It disappeared before your application executed a single line of business logic.
Your app was just... saying hello.
⠀
Most engineers spend hours optimizing algorithms.
Very few…

1.39K viewsKanhaiya, 13:34

𝗗𝗔𝗧𝗔 𝗦𝗧𝗥𝗨𝗖𝗧𝗨𝗥𝗘𝗦 𝗔𝗡𝗗 𝗔𝗟𝗚𝗢𝗥𝗜𝗧𝗛𝗠𝗦

https://www.linkedin.com/posts/kanahaiya-gupta_%F0%9D%97%9B%F0%9D%97%A7%F0%9D%97%A7%F0%9D%97%A3%F0%9D%97%A6-%F0%9D%97%B1%F0%9D%97%BC%F0%9D%97%B2%F0%9D%98%80%F0%9D%97%BB%F0%9D%98%81-%F0%9D%97%B7%F0%9D%98%82%F0%9D%98%80%F0%9D%98%81-%F0%9D%97%B2%F0%9D%97%BB%F0%9D%97%B0%F0%9D%97%BF%F0%9D%98%86%F0%9D%97%BD%F0%9D%98%81-share-7487515369167941632-f27s/?utm_source=social_share_send&utm_medium=member_desktop_web&rcm=ACoAAAnABVQBlknMXqfQbboPiNxNmcKfRLyBNs8

What HTTPS Really Protects Beyond Passwords | Kanahaiya Gupta posted on the topic | LinkedIn

𝗛𝗧𝗧𝗣𝗦 𝗱𝗼𝗲𝘀𝗻'𝘁 𝗷𝘂𝘀𝘁 𝗲𝗻𝗰𝗿𝘆𝗽𝘁 𝘆𝗼𝘂𝗿 𝗽𝗮𝘀𝘀𝘄𝗼𝗿𝗱.
It encrypts almost everything.
And surprisingly...
I've heard even senior engineers get this wrong. 🚨
⠀
Most people think HTTPS only protects this:
Username: alice
Password: mySecret123
In reality, it protects far…

1.1K viewsKanhaiya, 10:16

𝗗𝗔𝗧𝗔 𝗦𝗧𝗥𝗨𝗖𝗧𝗨𝗥𝗘𝗦 𝗔𝗡𝗗 𝗔𝗟𝗚𝗢𝗥𝗜𝗧𝗛𝗠𝗦

https://www.linkedin.com/posts/kanahaiya-gupta_distributedsystems-systemdesign-dns-share-7487884396893605888-Vk08/?utm_source=social_share_send&utm_medium=member_desktop_web&rcm=ACoAAAnABVQBlknMXqfQbboPiNxNmcKfRLyBNs8

DNS is the internet's phone book, not just a lookup service | Kanahaiya Gupta posted on the topic | LinkedIn

𝗬𝗼𝘂𝗿 𝘀𝗲𝗿𝘃𝗲𝗿𝘀 𝗮𝗿𝗲𝗻'𝘁 𝗱𝗼𝘄𝗻. 𝗬𝗲𝘁 𝘆𝗼𝘂𝗿 𝗲𝗻𝘁𝗶𝗿𝗲 𝗮𝗽𝗽𝗹𝗶𝗰𝗮𝘁𝗶𝗼𝗻 𝗶𝘀 𝗼𝗳𝗳𝗹𝗶𝗻𝗲.

✅ Zero errors.
✅ Every server is online.
✅ Latency looks perfect.

Yet users still can't reach it.
The outage isn't in your code.
It's in the internet's phone book. 📖
⠀
Before your browser…

1.04K viewsKanhaiya, 15:02

𝗗𝗔𝗧𝗔 𝗦𝗧𝗥𝗨𝗖𝗧𝗨𝗥𝗘𝗦 𝗔𝗡𝗗 𝗔𝗟𝗚𝗢𝗥𝗜𝗧𝗛𝗠𝗦

https://www.linkedin.com/posts/kanahaiya-gupta_%F0%9D%97%97%F0%9D%97%A6%F0%9D%97%94-%F0%9D%97%9C%F0%9D%97%BB%F0%9D%98%81%F0%9D%97%B2%F0%9D%97%BF%F0%9D%98%83%F0%9D%97%B6%F0%9D%97%B2%F0%9D%98%84-%F0%9D%97%A3%F0%9D%97%BF%F0%9D%97%B2%F0%9D%97%BD%F0%9D%97%AE%F0%9D%97%BF%F0%9D%97%AE%F0%9D%98%81%F0%9D%97%B6%F0%9D%97%BC%F0%9D%97%BB-share-7488200669598748673-Cz08/?utm_source=social_share_send&utm_medium=member_desktop_web&rcm=ACoAAAnABVQBlknMXqfQbboPiNxNmcKfRLyBNs8

Crack Coding Interviews with DSA Roadmap and Resources | Kanahaiya Gupta posted on the topic | LinkedIn

🚀𝗗𝗦𝗔 𝗜𝗻𝘁𝗲𝗿𝘃𝗶𝗲𝘄 𝗣𝗿𝗲𝗽𝗮𝗿𝗮𝘁𝗶𝗼𝗻 𝗥𝗼𝗮𝗱𝗺𝗮𝗽 (0 → Offer)
The fastest practical roadmap to crack coding interviews without wasting months on random resources.
Welcome everyone 👋

If you're preparing for:
✅ Product Companies
✅ FAANG / MAANG
✅ Startups
✅ SDE / Senior…

975 viewsKanhaiya, 12:57

𝗗𝗔𝗧𝗔 𝗦𝗧𝗥𝗨𝗖𝗧𝗨𝗥𝗘𝗦 𝗔𝗡𝗗 𝗔𝗟𝗚𝗢𝗥𝗜𝗧𝗛𝗠𝗦

https://www.linkedin.com/posts/kanahaiya-gupta_most-developers-use-apis-every-day-but-share-7488233312403230721-M2iu/?utm_source=social_share_send&utm_medium=member_desktop_web&rcm=ACoAAAnABVQBlknMXqfQbboPiNxNmcKfRLyBNs8

APIs as a Contract: Simplifying Software Development | Kanahaiya Gupta posted on the topic | LinkedIn

Most developers use APIs every day.

But if you asked them to explain one...

many would struggle.

Here's the explanation I wish someone had given me.

⠀

Imagine walking into a restaurant.

You don't walk straight into the kitchen.

You don't tell the chef…

1K viewsKanhaiya, 14:06

𝗗𝗔𝗧𝗔 𝗦𝗧𝗥𝗨𝗖𝗧𝗨𝗥𝗘𝗦 𝗔𝗡𝗗 𝗔𝗟𝗚𝗢𝗥𝗜𝗧𝗛𝗠𝗦

https://www.linkedin.com/posts/kanahaiya-gupta_i-used-to-think-http-was-just-for-browsers-share-7488599148724690945-DKzH/?utm_source=social_share_send&utm_medium=member_desktop_web&rcm=ACoAAAnABVQBlknMXqfQbboPiNxNmcKfRLyBNs8

Why HTTP Remains the Most Practical Choice for Distributed Systems | Kanahaiya Gupta posted on the topic | LinkedIn

I used to think HTTP was just for browsers.
Then I learned something that completely changed how I think about distributed systems.
Many of the world's largest software systems still rely on... HTTP.
Not because it's the fastest.
Not because it's the newest.…

983 viewsKanhaiya, 14:20

𝗗𝗔𝗧𝗔 𝗦𝗧𝗥𝗨𝗖𝗧𝗨𝗥𝗘𝗦 𝗔𝗡𝗗 𝗔𝗟𝗚𝗢𝗥𝗜𝗧𝗛𝗠𝗦

https://www.linkedin.com/posts/kanahaiya-gupta_%F0%9D%97%AC%F0%9D%97%BC%F0%9D%98%82%F0%9D%97%BF-%F0%9D%97%BD%F0%9D%97%AE%F0%9D%98%86%F0%9D%97%BA%F0%9D%97%B2%F0%9D%97%BB%F0%9D%98%81-%F0%9D%97%B1%F0%9D%97%B6%F0%9D%97%B1%F0%9D%97%BB%F0%9D%98%81-%F0%9D%97%B3%F0%9D%97%AE%F0%9D%97%B6%F0%9D%97%B9-share-7488956049320902657-irut/?utm_source=social_share_send&utm_medium=member_desktop_web&rcm=ACoAAAnABVQBlknMXqfQbboPiNxNmcKfRLyBNs8

How Payment Systems Prevent Duplicate Charges with Idempotence | Kanahaiya Gupta posted on the topic | LinkedIn

𝗬𝗼𝘂𝗿 𝗽𝗮𝘆𝗺𝗲𝗻𝘁 𝗱𝗶𝗱𝗻'𝘁 𝗳𝗮𝗶𝗹.
𝗜𝘁 𝗺𝗶𝗴𝗵𝘁 𝗵𝗮𝘃𝗲 𝗳𝗮𝗶𝗹𝗲𝗱... 𝘁𝘄𝗶𝗰𝗲. 💳
⠀
Imagine buying a $100 product online.
You click:
"Pay Now"
⏳ Loading...
Then...
❌ Request Timed Out.
⠀
Now you have a decision to make.
Do you wait?
Or do you click "Pay" again?
Most people click…

980 viewsKanhaiya, 13:59

𝗗𝗔𝗧𝗔 𝗦𝗧𝗥𝗨𝗖𝗧𝗨𝗥𝗘𝗦 𝗔𝗡𝗗 𝗔𝗟𝗚𝗢𝗥𝗜𝗧𝗛𝗠𝗦

https://www.linkedin.com/posts/kanahaiya-gupta_every-distributed-systems-algorithm-is-wrong-share-7489308955312259074--XNA/?utm_source=social_share_send&utm_medium=member_desktop_web&rcm=ACoAAAnABVQBlknMXqfQbboPiNxNmcKfRLyBNs8

Distributed Systems: Understanding Assumptions Before Algorithms | Kanahaiya Gupta posted on the topic | LinkedIn

Every distributed systems algorithm is wrong...
Until you define its assumptions. 🧠
⠀
Imagine five engineers trying to make a decision.
Can they always reach an agreement?
"It depends."
👉 Can everyone communicate?
👉 Is someone offline?
👉 Did someone crash?…

892 viewsKanhaiya, 13:20

𝗗𝗔𝗧𝗔 𝗦𝗧𝗥𝗨𝗖𝗧𝗨𝗥𝗘𝗦 𝗔𝗡𝗗 𝗔𝗟𝗚𝗢𝗥𝗜𝗧𝗛𝗠𝗦

Hi All 👋,

A small request 🙏

If you get a chance, could you please react to my LinkedIn posts? Your reactions and feedback genuinely help me understand whether the content is useful or if I should improve the way I explain things (or even stop posting if it's not adding value).

My goal is to simplify concepts from distributed systems, system design, and backend engineering—topics that you may be working on today or will almost certainly encounter as you grow in your career.

Your support and feedback keep me motivated to continue creating content and sharing what I've learned over the years.

Thank you so much! ❤️

Regards,
Kanahaiya 🙏

975 viewsKanhaiya, 13:29

𝗗𝗔𝗧𝗔 𝗦𝗧𝗥𝗨𝗖𝗧𝗨𝗥𝗘𝗦 𝗔𝗡𝗗 𝗔𝗟𝗚𝗢𝗥𝗜𝗧𝗛𝗠𝗦

https://www.linkedin.com/posts/kanahaiya-gupta_%F0%9D%97%98%F0%9D%98%83%F0%9D%97%B2%F0%9D%97%BF%F0%9D%98%86-%F0%9D%97%B1%F0%9D%97%B6%F0%9D%98%80%F0%9D%98%81%F0%9D%97%BF%F0%9D%97%B6%F0%9D%97%AF%F0%9D%98%82%F0%9D%98%81%F0%9D%97%B2%F0%9D%97%B1-%F0%9D%98%80%F0%9D%98%86%F0%9D%98%80%F0%9D%98%81%F0%9D%97%B2%F0%9D%97%BA-share-7489680988487294977-15gi/?utm_source=social_share_send&utm_medium=member_desktop_web&rcm=ACoAAAnABVQBlknMXqfQbboPiNxNmcKfRLyBNs8

Distributed Systems Silence is Ambiguous | Kanahaiya Gupta posted on the topic | LinkedIn

𝗘𝘃𝗲𝗿𝘆 𝗱𝗶𝘀𝘁𝗿𝗶𝗯𝘂𝘁𝗲𝗱 𝘀𝘆𝘀𝘁𝗲𝗺 𝘀𝘁𝗮𝗿𝘁𝘀 𝘄𝗶𝘁𝗵 𝗮 𝗹𝗶𝗲.
"We know the server has failed."
No...
You don't. ⚠️
⠀
Imagine you're talking to a friend.
Halfway through the call...
It disconnects.
What happened?
📱 Their battery died.
📶 They lost signal.
✈️ They switched to…

933 viewsKanhaiya, 13:59

𝗗𝗔𝗧𝗔 𝗦𝗧𝗥𝗨𝗖𝗧𝗨𝗥𝗘𝗦 𝗔𝗡𝗗 𝗔𝗟𝗚𝗢𝗥𝗜𝗧𝗛𝗠𝗦

https://www.linkedin.com/posts/kanahaiya-gupta_%F0%9D%97%AC%F0%9D%97%BC%F0%9D%98%82%F0%9D%97%BF-%F0%9D%98%81%F0%9D%97%B6%F0%9D%97%BA%F0%9D%97%B2%F0%9D%98%80%F0%9D%98%81%F0%9D%97%AE%F0%9D%97%BA%F0%9D%97%BD%F0%9D%98%80-%F0%9D%97%AE%F0%9D%97%BF%F0%9D%97%B2-%F0%9D%97%B9%F0%9D%98%86-share-7490042897287938048-_G--/?utm_source=share&utm_medium=member_desktop&rcm=ACoAAAnABVQBlknMXqfQbboPiNxNmcKfRLyBNs

Distributed Systems: Time Isn't Shared, Causality Matters | Kanahaiya Gupta posted on the topic | LinkedIn

𝗬𝗼𝘂𝗿 𝘁𝗶𝗺𝗲𝘀𝘁𝗮𝗺𝗽𝘀 𝗮𝗿𝗲 𝗹𝘆𝗶𝗻𝗴 𝘁𝗼 𝘆𝗼𝘂.
Every distributed systems engineer learns this the hard way. ⏰
⠀
Most developers believe one simple thing:
"If Event A has an earlier timestamp than Event B...
...then A happened first."
Seems obvious.
It's also wrong. 🚨…

891 viewsKanhaiya, 14:05

𝗗𝗔𝗧𝗔 𝗦𝗧𝗥𝗨𝗖𝗧𝗨𝗥𝗘𝗦 𝗔𝗡𝗗 𝗔𝗟𝗚𝗢𝗥𝗜𝗧𝗛𝗠𝗦