Ajay Suneja (Technical Suneja)

💻 Senior Software Engineer @adidas 🌟 Engineer By Heart & Content Creator By Passion ❤️ 600k+ subs on Youtube 🚀 160k+ on @Instagram 🚀 90k+ @LinkedIN

[Ajay Suneja (Technical Suneja) @TechnicalSuneja]

Success is a Journey not a Destination✅

Keep Working Hard and everything can be acheived

[Ajay Suneja (Technical Suneja) @TechnicalSuneja]

Optimistic Locking assumes conflicts are rare.
Pessimistic Locking assumes conflicts are inevitable.

The right choice depends on your business requirements, traffic patterns, and acceptable trade-offs.💯

[Ajay Suneja (Technical Suneja) @TechnicalSuneja]

𝗧𝘄𝗼 𝗽𝗲𝗼𝗽𝗹𝗲 𝗰𝗹𝗶𝗰𝗸 “𝗕𝗼𝗼𝗸 𝗡𝗼𝘄.”
𝗢𝗻𝗹𝘆 𝗼𝗻𝗲 𝘀𝗲𝗮𝘁 𝗶𝘀 𝗹𝗲𝗳𝘁.

Who gets it?

This simple question leads to one of the most important concepts in System Design:

𝗢𝗽𝘁𝗶𝗺𝗶𝘀𝘁𝗶𝗰 𝗟𝗼𝗰𝗸𝗶𝗻𝗴 𝘃𝘀 𝗣𝗲𝘀𝘀𝗶𝗺𝗶𝘀𝘁𝗶𝗰 𝗟𝗼𝗰𝗸𝗶𝗻𝗴.

Let’s understand it with a real example.

𝗘𝘅𝗮𝗺𝗽𝗹𝗲 𝟭
Imagine you are booking a movie ticket on BookMyShow.

Only one seat is left.

𝗥𝗮𝗵𝘂𝗹 𝗰𝗹𝗶𝗰𝗸𝘀 “𝗕𝗼𝗼𝗸 𝗡𝗼𝘄.”
𝗔𝘁 𝘁𝗵𝗲 𝘀𝗮𝗺𝗲 𝘁𝗶𝗺𝗲, 𝗡𝗲𝗵𝗮 𝗮𝗹𝘀𝗼 𝗰𝗹𝗶𝗰𝗸𝘀 “𝗕𝗼𝗼𝗸 𝗡𝗼𝘄.”

Both users saw the seat as available.

Now what?

If both payments succeed, the same seat gets sold twice.
That’s a serious business problem.

This is where locking comes in.

𝗢𝗽𝘁𝗶𝗺𝗶𝘀𝘁𝗶𝗰 𝗟𝗼𝗰𝗸𝗶𝗻𝗴 𝘀𝗮𝘆𝘀:

“Conflicts are rare. Let users continue.”

So both users can proceed, but when the booking is finally saved, the system checks if the seat is still available.

If Rahul booked it first, Neha’s booking will fail.

Simple idea.
No heavy locking.
Better scalability.
Less blocking.

𝗘𝘅𝗮𝗺𝗽𝗹𝗲 𝟮
Now imagine IRCTC Tatkal.

Thousands of users.
Limited seats.
Everyone clicking at the same time.

Here, conflicts are not rare.
They are almost guaranteed.

𝗣𝗲𝘀𝘀𝗶𝗺𝗶𝘀𝘁𝗶𝗰 𝗟𝗼𝗰𝗸𝗶𝗻𝗴 𝘀𝗮𝘆𝘀:

“If someone selected the seat, lock it.”

No one else can modify it until the booking succeeds or the lock expires.

𝗧𝗵𝗶𝘀 𝗴𝗶𝘃𝗲𝘀 𝗺𝗼𝗿𝗲 𝗰𝗼𝗻𝘀𝗶𝘀𝘁𝗲𝗻𝗰𝘆, 𝗯𝘂𝘁 𝗹𝗲𝘀𝘀 𝗰𝗼𝗻𝗰𝘂𝗿𝗿𝗲𝗻𝗰𝘆.

So which one is better?

Wrong question.

The real question is:

How likely are conflicts in your system?

Low conflicts → Optimistic Locking
High conflicts → Pessimistic Locking

System Design is not about memorizing fancy terms.

𝗜𝘁 𝗶𝘀 𝗮𝗯𝗼𝘂𝘁 𝘂𝗻𝗱𝗲𝗿𝘀𝘁𝗮𝗻𝗱𝗶𝗻𝗴 𝘁𝗵𝗲 𝗽𝗿𝗼𝗯𝗹𝗲𝗺, 𝗶𝗱𝗲𝗻𝘁𝗶𝗳𝘆𝗶𝗻𝗴 𝘁𝗵𝗲 𝘁𝗿𝗮𝗱𝗲-𝗼𝗳𝗳, 𝗮𝗻𝗱 𝗰𝗵𝗼𝗼𝘀𝗶𝗻𝗴 𝘁𝗵𝗲 𝗿𝗶𝗴𝗵𝘁 𝗮𝗽𝗽𝗿𝗼𝗮𝗰𝗵.

That’s when concepts stop being interview prep.

That’s when true engineering begins. 💯

Which locking strategy have you used in a real project?

Follow @TechnicalSuneja for more real-world System Design concepts explained through practical examples. 🚀

#SystemDesign #SoftwareEngineering #TechInterviews #SoftwareDeveloper #Scalability #CareerGrowth

[Ajay Suneja (Technical Suneja) @TechnicalSuneja]

𝗧𝘄𝗼 𝗽𝗲𝗼𝗽𝗹𝗲 𝗰𝗹𝗶𝗰𝗸 “𝗕𝗼𝗼𝗸 𝗡𝗼𝘄.”
𝗢𝗻𝗹𝘆 𝗼𝗻𝗲 𝘀𝗲𝗮𝘁 𝗶𝘀 𝗹𝗲𝗳𝘁.

Who gets it?

This simple question leads to one of the most important concepts in System Design:

𝗢𝗽𝘁𝗶𝗺𝗶𝘀𝘁𝗶𝗰 𝗟𝗼𝗰𝗸𝗶𝗻𝗴 𝘃𝘀 𝗣𝗲𝘀𝘀𝗶𝗺𝗶𝘀𝘁𝗶𝗰 𝗟𝗼𝗰𝗸𝗶𝗻𝗴.

Let’s understand it with a real example.

𝗘𝘅𝗮𝗺𝗽𝗹𝗲 𝟭
Imagine you are booking a movie ticket on BookMyShow.

Only one seat is left.

𝗥𝗮𝗵𝘂𝗹 𝗰𝗹𝗶𝗰𝗸𝘀 “𝗕𝗼𝗼𝗸 𝗡𝗼𝘄.”
𝗔𝘁 𝘁𝗵𝗲 𝘀𝗮𝗺𝗲 𝘁𝗶𝗺𝗲, 𝗡𝗲𝗵𝗮 𝗮𝗹𝘀𝗼 𝗰𝗹𝗶𝗰𝗸𝘀 “𝗕𝗼𝗼𝗸 𝗡𝗼𝘄.”

Both users saw the seat as available.

Now what?

If both payments succeed, the same seat gets sold twice.
That’s a serious business problem.

This is where locking comes in.

𝗢𝗽𝘁𝗶𝗺𝗶𝘀𝘁𝗶𝗰 𝗟𝗼𝗰𝗸𝗶𝗻𝗴 𝘀𝗮𝘆𝘀:

“Conflicts are rare. Let users continue.”

So both users can proceed, but when the booking is finally saved, the system checks if the seat is still available.

If Rahul booked it first, Neha’s booking will fail.

Simple idea.
No heavy locking.
Better scalability.
Less blocking.

𝗘𝘅𝗮𝗺𝗽𝗹𝗲 𝟮
Now imagine IRCTC Tatkal.

Thousands of users.
Limited seats.
Everyone clicking at the same time.

Here, conflicts are not rare.
They are almost guaranteed.

𝗣𝗲𝘀𝘀𝗶𝗺𝗶𝘀𝘁𝗶𝗰 𝗟𝗼𝗰𝗸𝗶𝗻𝗴 𝘀𝗮𝘆𝘀:

“If someone selected the seat, lock it.”

No one else can modify it until the booking succeeds or the lock expires.

𝗧𝗵𝗶𝘀 𝗴𝗶𝘃𝗲𝘀 𝗺𝗼𝗿𝗲 𝗰𝗼𝗻𝘀𝗶𝘀𝘁𝗲𝗻𝗰𝘆, 𝗯𝘂𝘁 𝗹𝗲𝘀𝘀 𝗰𝗼𝗻𝗰𝘂𝗿𝗿𝗲𝗻𝗰𝘆.

So which one is better?

Wrong question.

The real question is:

How likely are conflicts in your system?

Low conflicts → Optimistic Locking
High conflicts → Pessimistic Locking

System Design is not about memorizing fancy terms.

𝗜𝘁 𝗶𝘀 𝗮𝗯𝗼𝘂𝘁 𝘂𝗻𝗱𝗲𝗿𝘀𝘁𝗮𝗻𝗱𝗶𝗻𝗴 𝘁𝗵𝗲 𝗽𝗿𝗼𝗯𝗹𝗲𝗺, 𝗶𝗱𝗲𝗻𝘁𝗶𝗳𝘆𝗶𝗻𝗴 𝘁𝗵𝗲 𝘁𝗿𝗮𝗱𝗲-𝗼𝗳𝗳, 𝗮𝗻𝗱 𝗰𝗵𝗼𝗼𝘀𝗶𝗻𝗴 𝘁𝗵𝗲 𝗿𝗶𝗴𝗵𝘁 𝗮𝗽𝗽𝗿𝗼𝗮𝗰𝗵.

That’s when concepts stop being interview prep.

That’s when true engineering begins. 💯

Which locking strategy have you used in a real project?

Follow @TechnicalSuneja for more real-world System Design concepts explained through practical examples. 🚀

#SystemDesign #SoftwareEngineering #TechInterviews #SoftwareDeveloper #Scalability #CareerGrowth

[Ajay Suneja (Technical Suneja) @TechnicalSuneja]

Champions again! 🇮🇳
India wins the T20 World Cup.
Amazing effort by the whole team 👏everyone played their part. Proud moment!🇮🇳🫡

[Ajay Suneja (Technical Suneja) @TechnicalSuneja]

No matter how small is your salary today, 🤑
Always respect the journey that brought you here.🙌

#respect #journey #TechnicalSuneja

[Ajay Suneja (Technical Suneja) @TechnicalSuneja]

Dear Freshers!

The start is always hard!
You will lose hope and think, “This will not work.”

But mark my words :
Once you pass through this phase, nobody can stop you from thriving.

#Fresher #technicalsuneja

[Ajay Suneja (Technical Suneja) @TechnicalSuneja]

Never forget you can start at 21,
Fail at 25,

Restart at 35,
And finally thrive at 40.

Don’t let the internet rush you.
Someone else’s success is not your deadline.

You’re not late.
You’re just on your time.

#technicalsuneja

[Ajay Suneja (Technical Suneja) @TechnicalSuneja]

Your parents are waiting for your success. ❤️

Never quit before you become someone they’re proud of. 💪✨

#Success #TechnicalSuneja

[Ajay Suneja (Technical Suneja) @TechnicalSuneja]

Waqt lagega, mushkilein bhi aayengi,
Par woh din zaroor aayega,

Jin haathon mein aaj books hain,
unhi haathon mein kal Offer Letter hoga.

Bas Mehnat par bharosa rakho. ✨📚💼

#technicalsuneja #offerletter

[Ajay Suneja (Technical Suneja) @TechnicalSuneja]

Nobody chooses to be poor or unemployed!
Stop calling people lazy just because your door opened first.

Life doesn’t run on equal starting points.
It runs on different timelines.

Trust the God and his process!
Everyone’s time comes. ⏳

#GodsPlan

[Ajay Suneja (Technical Suneja) @TechnicalSuneja]

Reailty Check !

Switching Jobs in every 1.5-2 years is the Fastest Way to increase your salary especially when you are early in your career

#JobSwitch

[Ajay Suneja (Technical Suneja) @TechnicalSuneja]

Speed doesn’t matter if you’re running in the wrong direction! 💯 💯

[Ajay Suneja (Technical Suneja) @TechnicalSuneja]

Every line of code you write today makes you a better developer tomorrow 💯

You don’t need to be great to start, but you need to start to be great. ✨

[Ajay Suneja (Technical Suneja) @TechnicalSuneja]

𝗥𝗲𝘀𝘂𝗺𝗲: Pro in setting up dev environments
𝗥𝗲𝗮𝗹𝗶𝘁𝘆: 3 hours to fix .env file 😩
We laugh, we cry, we Google again.
That’s the developer journey! 💯💯

[Ajay Suneja (Technical Suneja) @TechnicalSuneja]

Learning to code is hard. But not giving up — that’s what turns you into a real developer. 💯😉

#CodeLife #DevJourney #KeepCoding

[Ajay Suneja (Technical Suneja) @TechnicalSuneja]

90% of coding is just figuring out
where the bug is. 😁
The other 10% is fixing a typo.😉

#DeveloperThoughts #Debugging

[Ajay Suneja (Technical Suneja) @TechnicalSuneja]

You won’t master coding in a day, but if you code daily, you will master it. 💯💯

[Ajay Suneja (Technical Suneja) @TechnicalSuneja]

From writing my first ‘Hello World’ to building complex apps, every line of code has been a step towards growth.

Remember, the journey from beginner to expert is built on perseverance, curiosity, and endless debugging!

#CodingJourney #KeepCoding

[Ajay Suneja (Technical Suneja) @TechnicalSuneja]

Code often doesn’t work on the first try, but persistence uncovers the pattern. Keep pushing, keep coding, and watch the magic happen! ✨

#KeepCoding #TechLife

[Ajay Suneja (Technical Suneja) @TechnicalSuneja]

Don’t forget core JavaScript while chasing AI hype. In interviews, GPT won’t show up — you will. 💯💯

[Ajay Suneja (Technical Suneja) @TechnicalSuneja]

Your salary should be based on your skills, not just your past package! 🚀 Keep applying, keep leveling up— someone will pay you what you’re worth! 💰🔥