𝗗𝗔𝗧𝗔 𝗦𝗧𝗥𝗨𝗖𝗧𝗨𝗥𝗘𝗦 𝗔𝗡𝗗 𝗔𝗟𝗚𝗢𝗥𝗜𝗧𝗛𝗠𝗦 – Telegram

𝗗𝗔𝗧𝗔 𝗦𝗧𝗥𝗨𝗖𝗧𝗨𝗥𝗘𝗦 𝗔𝗡𝗗 𝗔𝗟𝗚𝗢𝗥𝗜𝗧𝗛𝗠𝗦

11.5K subscribers

20 photos

2 files

144 links

It contains data structures & algorithmic problem solutions.

Download Telegram

About

Blog

Apps

Platform

𝗗𝗔𝗧𝗔 𝗦𝗧𝗥𝗨𝗖𝗧𝗨𝗥𝗘𝗦 𝗔𝗡𝗗 𝗔𝗟𝗚𝗢𝗥𝗜𝗧𝗛𝗠𝗦

11.5K subscribers

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…

1.38K 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…

971 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.…

982 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…

978 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?…

889 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 🙏

972 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…

931 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. 🚨…

889 viewsKanhaiya, 14:05

𝗗𝗔𝗧𝗔 𝗦𝗧𝗥𝗨𝗖𝗧𝗨𝗥𝗘𝗦 𝗔𝗡𝗗 𝗔𝗟𝗚𝗢𝗥𝗜𝗧𝗛𝗠𝗦

https://www.linkedin.com/posts/kanahaiya-gupta_%F0%9D%97%A7%F0%9D%98%84%F0%9D%97%BC-%F0%9D%98%80%F0%9D%97%B2%F0%9D%97%BF%F0%9D%98%83%F0%9D%97%B2%F0%9D%97%BF%F0%9D%98%80-%F0%9D%97%A7%F0%9D%98%84%F0%9D%97%BC-%F0%9D%97%B1%F0%9D%97%B6%F0%9D%97%B3%F0%9D%97%B3%F0%9D%97%B2%F0%9D%97%BF%F0%9D%97%B2%F0%9D%97%BB%F0%9D%98%81-share-7490391933538983936-upIZ/?utm_source=social_share_send&utm_medium=member_desktop_web&rcm=ACoAAAnABVQBlknMXqfQbboPiNxNmcKfRLyBNs8

Lamport Logical Clocks: Causality Over Time | Kanahaiya Gupta posted on the topic | LinkedIn

𝗧𝘄𝗼 𝘀𝗲𝗿𝘃𝗲𝗿𝘀. 𝗧𝘄𝗼 𝗱𝗶𝗳𝗳𝗲𝗿𝗲𝗻𝘁 𝗰𝗹𝗼𝗰𝗸𝘀. 𝗪𝗵𝗶𝗰𝗵 𝗼𝗻𝗲 𝗶𝘀 𝗿𝗶𝗴𝗵𝘁? 🤔
⠀
Imagine this.
Server A says it's 10:00 AM.
Server B says it's 9:59 AM.
Both processed the same request.
Now answer this:
Which event happened first?
You can't tell.
And that's exactly why physical…

911 viewsKanhaiya, 13:05

𝗗𝗔𝗧𝗔 𝗦𝗧𝗥𝗨𝗖𝗧𝗨𝗥𝗘𝗦 𝗔𝗡𝗗 𝗔𝗟𝗚𝗢𝗥𝗜𝗧𝗛𝗠𝗦

https://www.linkedin.com/posts/kanahaiya-gupta_%F0%9D%97%A7%F0%9D%98%84%F0%9D%97%BC-%F0%9D%97%B2%F0%9D%98%83%F0%9D%97%B2%F0%9D%97%BB%F0%9D%98%81%F0%9D%98%80-%F0%9D%97%B0%F0%9D%97%AE%F0%9D%97%BB-%F0%9D%97%B5%F0%9D%97%AE%F0%9D%97%BD%F0%9D%97%BD%F0%9D%97%B2%F0%9D%97%BB-%F0%9D%97%AE%F0%9D%98%81-share-7490786218939682819-lN7J/?utm_source=social_share_send&utm_medium=member_desktop_web&rcm=ACoAAAnABVQBlknMXqfQbboPiNxNmcKfRLyBNs8

Lamport Clocks vs Vector Clocks in Distributed Systems | Kanahaiya Gupta posted on the topic | LinkedIn

𝗧𝘄𝗼 𝗲𝘃𝗲𝗻𝘁𝘀 𝗰𝗮𝗻 𝗵𝗮𝗽𝗽𝗲𝗻 𝗮𝘁 𝘁𝗵𝗲 𝘀𝗮𝗺𝗲 𝘁𝗶𝗺𝗲.
And neither happened first.
That sounds impossible...
Until you build distributed systems. 🤯
⠀
Imagine Alice and Bob are editing the same Google Doc.
Alice updates Paragraph 1.
Bob updates Paragraph 5.
Both are offline.…

859 viewsKanhaiya, 15:10

𝗗𝗔𝗧𝗔 𝗦𝗧𝗥𝗨𝗖𝗧𝗨𝗥𝗘𝗦 𝗔𝗡𝗗 𝗔𝗟𝗚𝗢𝗥𝗜𝗧𝗛𝗠𝗦

https://www.linkedin.com/posts/kanahaiya-gupta_%F0%9D%97%A0%F0%9D%97%BC%F0%9D%98%80%F0%9D%98%81-%F0%9D%97%B0%F0%9D%97%AE%F0%9D%97%BB%F0%9D%97%B1%F0%9D%97%B6%F0%9D%97%B1%F0%9D%97%AE%F0%9D%98%81%F0%9D%97%B2%F0%9D%98%80-%F0%9D%97%B0%F0%9D%97%AE%F0%9D%97%BB-%F0%9D%97%B2%F0%9D%98%85-share-7491108355768213504-3-uA/?utm_source=social_share_send&utm_medium=member_desktop_web&rcm=ACoAAAnABVQBlknMXqfQbboPiNxNmcKfRLyBNs8

Leader Election in Distributed Systems Ensures Single Authority | Kanahaiya Gupta posted on the topic | LinkedIn

𝗠𝗼𝘀𝘁 𝗰𝗮𝗻𝗱𝗶𝗱𝗮𝘁𝗲𝘀 𝗰𝗮𝗻 𝗲𝘅𝗽𝗹𝗮𝗶𝗻 𝗥𝗮𝗳𝘁.
𝗩𝗲𝗿𝘆 𝗳𝗲𝘄 𝗰𝗮𝗻 𝗲𝘅𝗽𝗹𝗮𝗶𝗻 𝘄𝗵𝘆 𝗟𝗲𝗮𝗱𝗲𝗿 𝗘𝗹𝗲𝗰𝘁𝗶𝗼𝗻 𝗲𝘅𝗶𝘀𝘁𝘀. 🤔
That's exactly where many System Design interviews are won or lost.
⠀
Imagine five engineers working on the same project.
Everyone starts assigning tasks independently.
🚨…

860 viewsKanhaiya, 12:32

𝗗𝗔𝗧𝗔 𝗦𝗧𝗥𝗨𝗖𝗧𝗨𝗥𝗘𝗦 𝗔𝗡𝗗 𝗔𝗟𝗚𝗢𝗥𝗜𝗧𝗛𝗠𝗦

https://www.linkedin.com/posts/kanahaiya-gupta_%F0%9D%97%AA%F0%9D%97%B5%F0%9D%97%AE%F0%9D%98%81-%F0%9D%97%B5%F0%9D%97%AE%F0%9D%97%BD%F0%9D%97%BD%F0%9D%97%B2%F0%9D%97%BB%F0%9D%98%80-%F0%9D%98%84%F0%9D%97%B5%F0%9D%97%B2%F0%9D%97%BB-%F0%9D%98%81%F0%9D%98%84%F0%9D%97%BC-%F0%9D%98%80%F0%9D%97%B2%F0%9D%97%BF%F0%9D%98%83%F0%9D%97%B2%F0%9D%97%BF%F0%9D%98%80-share-7491491197421621249-WBGa/?utm_source=social_share_send&utm_medium=member_desktop_web&rcm=ACoAAAnABVQBlknMXqfQbboPiNxNmcKfRLyBNs8

Raft Leader Election Simplified for Distributed Systems | Kanahaiya Gupta posted on the topic | LinkedIn

𝗪𝗵𝗮𝘁 𝗵𝗮𝗽𝗽𝗲𝗻𝘀 𝘄𝗵𝗲𝗻 𝘁𝘄𝗼 𝘀𝗲𝗿𝘃𝗲𝗿𝘀 𝗯𝗼𝘁𝗵 𝘀𝗮𝘆...
"I'm the leader." 👀
Without rules, distributed systems become chaos.
Raft solved this with one brilliantly simple idea.
⠀
Imagine 5 friends choosing a football captain.
👥 Alice
👥 Bob
👥 Charlie
👥 David
👥 Emma
The current…

819 viewsKanhaiya, 13:52

𝗗𝗔𝗧𝗔 𝗦𝗧𝗥𝗨𝗖𝗧𝗨𝗥𝗘𝗦 𝗔𝗡𝗗 𝗔𝗟𝗚𝗢𝗥𝗜𝗧𝗛𝗠𝗦

https://www.linkedin.com/posts/kanahaiya-gupta_%F0%9D%97%A7%F0%9D%97%B5%F0%9D%97%BF%F0%9D%97%B2%F0%9D%97%B2-%F0%9D%97%B0%F0%9D%97%BC%F0%9D%97%BD%F0%9D%97%B6%F0%9D%97%B2%F0%9D%98%80-%F0%9D%97%BC%F0%9D%97%B3-%F0%9D%98%86%F0%9D%97%BC%F0%9D%98%82%F0%9D%97%BF-%F0%9D%97%B1%F0%9D%97%AE%F0%9D%98%81%F0%9D%97%AE-share-7491850059265896448-NhNH/?utm_source=social_share_send&utm_medium=member_desktop_web&rcm=ACoAAAnABVQBlknMXqfQbboPiNxNmcKfRLyBNs8

Replication Tradeoffs in Distributed Systems | Kanahaiya Gupta posted on the topic | LinkedIn

𝗧𝗵𝗿𝗲𝗲 𝗰𝗼𝗽𝗶𝗲𝘀 𝗼𝗳 𝘆𝗼𝘂𝗿 𝗱𝗮𝘁𝗮 𝗰𝗮𝗻 𝗯𝗲 𝘄𝗼𝗿𝘀𝗲 𝘁𝗵𝗮𝗻 𝗼𝗻𝗲.
If those three copies don't agree.
⠀
Imagine your database has 3 replicas:
A → $1,000
B → $1,000
C → $1,000
A customer deposits $500.
For a short period, you might have:
A → $1,500 ✅
B → $1,000 ❌
C → $1,000…

804 viewsKanhaiya, 13:38

𝗗𝗔𝗧𝗔 𝗦𝗧𝗥𝗨𝗖𝗧𝗨𝗥𝗘𝗦 𝗔𝗡𝗗 𝗔𝗟𝗚𝗢𝗥𝗜𝗧𝗛𝗠𝗦

https://www.linkedin.com/posts/kanahaiya-gupta_%F0%9D%97%A7%F0%9D%97%B5%F0%9D%97%BF%F0%9D%97%B2%F0%9D%97%B2-%F0%9D%98%80%F0%9D%97%B2%F0%9D%97%BF%F0%9D%98%83%F0%9D%97%B2%F0%9D%97%BF%F0%9D%98%80-%F0%9D%97%B0%F0%9D%97%AE%F0%9D%97%BB-%F0%9D%97%B5%F0%9D%97%AE%F0%9D%98%83%F0%9D%97%B2-share-7492229245058859008-My0I/?utm_source=social_share_send&utm_medium=member_desktop_web&rcm=ACoAAAnABVQBlknMXqfQbboPiNxNmcKfRLyBNs8

Distributed Systems: The Hard Problem of Consensus | Kanahaiya Gupta posted on the topic | LinkedIn

𝗧𝗵𝗿𝗲𝗲 𝘀𝗲𝗿𝘃𝗲𝗿𝘀 𝗰𝗮𝗻 𝗵𝗮𝘃𝗲 𝘁𝗵𝗲 𝘀𝗮𝗺𝗲 𝗱𝗮𝘁𝗮…𝗮𝗻𝗱 𝘀𝘁𝗶𝗹𝗹 𝗱𝗶𝘀𝗮𝗴𝗿𝗲𝗲.
⠀
Replication gives you multiple copies.
But it doesn't automatically give you consistency.
The real problem is much harder:
𝗪𝗵𝗮𝘁 𝗵𝗮𝗽𝗽𝗲𝗻𝘀 𝗻𝗲𝘅𝘁?
⠀
Imagine 3 servers:
Server A
Server B
Server C
All start…

810 viewsKanhaiya, 14:45

𝗗𝗔𝗧𝗔 𝗦𝗧𝗥𝗨𝗖𝗧𝗨𝗥𝗘𝗦 𝗔𝗡𝗗 𝗔𝗟𝗚𝗢𝗥𝗜𝗧𝗛𝗠𝗦

https://www.linkedin.com/posts/kanahaiya-gupta_%F0%9D%97%99%F0%9D%97%B6%F0%9D%98%83%F0%9D%97%B2-%F0%9D%98%80%F0%9D%97%B2%F0%9D%97%BF%F0%9D%98%83%F0%9D%97%B2%F0%9D%97%BF%F0%9D%98%80-%F0%9D%97%B1%F0%9D%97%B6%F0%9D%98%80%F0%9D%97%AE%F0%9D%97%B4%F0%9D%97%BF%F0%9D%97%B2%F0%9D%97%B2-share-7492581209768673282-5Wmt/?utm_source=social_share_send&utm_medium=member_desktop_web&rcm=ACoAAAnABVQBlknMXqfQbboPiNxNmcKfRLyBNs8

Understanding Consensus in Distributed Systems | Kanahaiya Gupta posted on the topic | LinkedIn

𝗙𝗶𝘃𝗲 𝘀𝗲𝗿𝘃𝗲𝗿𝘀 𝗱𝗶𝘀𝗮𝗴𝗿𝗲𝗲. 𝗪𝗵𝗼 𝗴𝗲𝘁𝘀 𝘁𝗼 𝗱𝗲𝗰𝗶𝗱𝗲 𝘄𝗵𝗼'𝘀 𝗿𝗶𝗴𝗵𝘁?
Imagine this:
A → X = 100
B → X = 100
C → X = 200
D → X = 100
E → ❌ crashed
Four servers are alive.
But they don't agree.
And the network can't tell you whether a server is:
👉 Dead
👉 Slow
👉 Disconnected…

808 viewsKanhaiya, 14:03

𝗗𝗔𝗧𝗔 𝗦𝗧𝗥𝗨𝗖𝗧𝗨𝗥𝗘𝗦 𝗔𝗡𝗗 𝗔𝗟𝗚𝗢𝗥𝗜𝗧𝗛𝗠𝗦

https://www.linkedin.com/posts/kanahaiya-gupta_distributedsystems-systemdesign-softwarearchitecture-share-7492945454012256257-D0_m/?utm_source=social_share_send&utm_medium=member_desktop_web&rcm=ACoAAAnABVQBlknMXqfQbboPiNxNmcKfRLyBNs8

Choosing the Right Consistency for Your Distributed System | Kanahaiya Gupta posted on the topic | LinkedIn

𝗦𝘁𝗿𝗼𝗻𝗴 𝗰𝗼𝗻𝘀𝗶𝘀𝘁𝗲𝗻𝗰𝘆 𝗶𝘀𝗻'𝘁 𝗮𝗹𝘄𝗮𝘆𝘀 𝗯𝗲𝘁𝘁𝗲𝗿. 𝗜𝘁'𝘀 𝗼𝗳𝘁𝗲𝗻 𝗷𝘂𝘀𝘁 𝗺𝗼𝗿𝗲 𝗲𝘅𝗽𝗲𝗻𝘀𝗶𝘃𝗲. ⚙️
⠀
Imagine your database has 3 replicas:
A → B → C
A user changes their name through A:
A → John ✅
But replication takes time.
For a short period:
A → John
B → Old value
C → Old value…

771 viewsKanhaiya, 14:12

𝗗𝗔𝗧𝗔 𝗦𝗧𝗥𝗨𝗖𝗧𝗨𝗥𝗘𝗦 𝗔𝗡𝗗 𝗔𝗟𝗚𝗢𝗥𝗜𝗧𝗛𝗠𝗦

https://www.linkedin.com/posts/kanahaiya-gupta_distributedsystems-systemdesign-softwarearchitecture-share-7493301314400034817-LE7J/?utm_source=social_share_send&utm_medium=member_desktop_web&rcm=ACoAAAnABVQBlknMXqfQbboPiNxNmcKfRLyBNs

Distributed Systems: When Coordination is Not Always Necessary | Kanahaiya Gupta posted on the topic | LinkedIn

𝗧𝗵𝗲 𝗺𝗼𝘀𝘁 𝗲𝘅𝗽𝗲𝗻𝘀𝗶𝘃𝗲 𝘄𝗼𝗿𝗱𝘀 𝗶𝗻 𝗮 𝗱𝗶𝘀𝘁𝗿𝗶𝗯𝘂𝘁𝗲𝗱 𝘀𝘆𝘀𝘁𝗲𝗺 𝗺𝗶𝗴𝗵𝘁 𝗯𝗲:
“𝗖𝗮𝗻 𝗜 𝗽𝗿𝗼𝗰𝗲𝗲𝗱?” 🚨
⠀
One server asks.
Another server checks.
A third server confirms.
Only then does the request move forward.
That sounds safe.
Until every request starts doing it. ⚙️
Latency increases.…

727 viewsKanhaiya, 13:44

𝗗𝗔𝗧𝗔 𝗦𝗧𝗥𝗨𝗖𝗧𝗨𝗥𝗘𝗦 𝗔𝗡𝗗 𝗔𝗟𝗚𝗢𝗥𝗜𝗧𝗛𝗠𝗦

https://www.linkedin.com/posts/kanahaiya-gupta_%F0%9D%97%96%F0%9D%97%BC%F0%9D%97%BB%F0%9D%98%80%F0%9D%97%B2%F0%9D%97%BB%F0%9D%98%80%F0%9D%98%82%F0%9D%98%80-%F0%9D%98%80%F0%9D%97%AE%F0%9D%98%86%F0%9D%98%80-%F0%9D%97%9F%F0%9D%97%B2%F0%9D%98%81%F0%9D%98%80-%F0%9D%97%AE%F0%9D%97%B4%F0%9D%97%BF%F0%9D%97%B2%F0%9D%97%B2-share-7493668307510861825-PYp1/?utm_source=social_share_send&utm_medium=member_desktop_web&rcm=ACoAAAnABVQBlknMXqfQbboPiNxNmcKfRLyBNs

CRDTs: Conflict-Free Replicated Data Types for Distributed Systems | Kanahaiya Gupta posted on the topic | LinkedIn

𝗖𝗼𝗻𝘀𝗲𝗻𝘀𝘂𝘀 𝘀𝗮𝘆𝘀: “𝗟𝗲𝘁’𝘀 𝗮𝗴𝗿𝗲𝗲 𝗯𝗲𝗳𝗼𝗿𝗲 𝘄𝗲 𝗮𝗰𝘁.”
𝗖𝗥𝗗𝗧𝘀 𝘀𝗮𝘆: “𝗟𝗲𝘁’𝘀 𝗮𝗰𝘁. 𝗪𝗲’𝗹𝗹 𝗺𝗲𝗿𝗴𝗲 𝗹𝗮𝘁𝗲𝗿.” 🤯
⠀
At first, that sounds like a recipe for data corruption.
Two replicas.
No immediate coordination.
Both changing the same data.
What could possibly go wrong? 🚨

CRDT…

725 viewsKanhaiya, 14:49