Udit Yadav

VP (SDE-III) at Goldman Sachs | Ex-Oracle | NIT-A 2017
Noida | Bangalore

[Udit Yadav @Udit1195]

@arpit_bhayani Agree! AI builds the app, System design keeps it alive :-)

[Arpit Bhayani @arpit_bhayani]

I have seen more systems struggling because of wrong code than slower ones. The fact remains, most engineers optimise too early.

About 8 years ago, my principal engineer once told me: Performance is almost always the last thing you should be thinking about. As an SDE-2, this did not make sense :) After a few follow-ups, I understood why he meant that.

The order that actually matters is this. First, is the code correct? Does it do what it is supposed to do? Second, can someone maintain it six months from now without wanting to quit? Third, is it fast to read and write? Only after all three does performance even enter the conversation.

The reason this order exists is simple. A fast, unmaintainable codebase is a liability. A performant-but-wrong system is worse than a slow, correct one. You cannot optimise your way out of a bug.

Now, this is not universally true. Databases, high-frequency trading systems, and real-time embedded software are domains where performance is a first-class concern from day one. But those are the exceptions, not the default assumption you should bring to every PR.

What is certainly true is that for most codebases, premature optimisation adds complexity, reduces readability, and solves a problem that does not exist yet.

So, write correct code first. Then clean it. Then, only if the profiler gives you a reason, make it fast.

[Rahul Rawat @rawatrahul9]

Pathetic and shameful from the referee. How on earth was that ball in play?
This moment resulted in India’s loss 1-2 loss to Qatar. #Indianfootball

[Vikrant Gupta @vikrantgupta73]

On racism: Do you remember how during the World Cup game @imVkohli coaxed the Indian crowd not to boo @stevesmith49 (on Sandpaper Gate) - Virat in fact gestured to the crowd to applaud Smith. Can’t Australian players do the same in Sydney? #SydneyTest #racism #IndvsAus #Siraj

[Udit Yadav @Udit1195]

@Airtel_Presence Really Poor Service Airtel

[Udit Yadav @Udit1195]

@airtelindia Poor Service Airtel . #Disconnected

[Ministry of Education @EduMinOfIndia]

.@smritiirani visited NIT Agartala to engage with students & faculty. HRM also reviewed their lab & hostel facilities

[Mihir Bijur @MihirBijur]

Just read that people in Uttarakhand are selling water to those stranded for Rs. 250! If true, it's a sad day for humanity. Humanity failed.

[Udit Yadav @Udit1195]

@AnkitaTyagi5 true quote..

[Udit Yadav @Udit1195]

@MTVIndia #IndiasRisingStars Virat Kohli..

[Michael Clarke @MClarke23]

Congrats to @BrettLee_58 on an amazing career. A great ambassador for Australian cricket. Will be missed.

[Udit Yadav @Udit1195]

this is my frst tweet....:-D