Top Tweets for #CodeWithIshwar
Simple code > Clever code.
The best engineers don't make things complicated.
They make complex things simple.
#CodeWithIshwar #SoftwareEngineering #CleanCode #Programming #DeveloperLife 🚀
Software engineering and software interviews test different skills.The best engineers master both.#CodeWithIshwar #SoftwareEngineering #InterviewPrep
The best code:
Doesn't exist.
No bugs.
No maintenance.
No documentation.
No complexity.
Sometimes the most valuable commit is:
"Removed 2,000 lines of code."
#CodeWithIshwar #SoftwareEngineering 🚀
This week's learning:
The internet has no shortage of tutorials.
The shortage is people willing to struggle through building something from scratch.
Agree or disagree?
#FridayLearning #CodeWithIshwar #BuildInPublic #Programming #SoftwareEngineering 🚀
SOLID Principles make code scalable, maintainable, and easier to debug.
#codewithishwar #SOLID #CleanCode #SoftwareEngineering #Programming #Java #Backend #SystemDesign #Coding #Developers #TechTwitter #100DaysOfCode #Architecture #FullStackDeveloper
Node.js is single-threaded, but concurrency issues still happen.
Race conditions and overlapping async operations are real challenges in scalable systems.
That’s why mutexes, transactions, and Redis locks still matter 🚀
#NodeJS #JavaScript #BackendDevelopment #codewithishwar
Git won the popularity war.
But Mercurial powered massive engineering workflows at Meta Platforms and Mozilla.
🚀 New newsletter:
“Why Mercurial Still Matters in 2026”
https://t.co/ghKfKjDBxF
#Mercurial #Git #SoftwareEngineering #CodeWithIshwar
JavaScript is single-threaded.
So why do race conditions still exist? 👀
Because async JavaScript is all about execution order.
Event Loop → Promises → Microtasks → Race Conditions.
That’s the real game.
#CodeWithIshwar #javascript #nodejs #reactjs
Most devs don’t struggle with JavaScript.
They struggle because they ignore what’s under the hood.
JS =
• Closures (memory)
• Event Loop (async)
• Prototypes (inheritance)
• Coercion (weird but powerful)
#JavaScript #WebDev #Programming #CodeWithIshwar
A simple integer broke my program.
Two threads:
+1 and -1
Expected: 0
Actual: ❌ random
Because value++ is NOT atomic.
It’s:
Read → Modify → Write
Threads can interleave at any step → race condition.
#Concurrency #Multithreading #CodeWithIshwar
Redis looks simple — just key-value storage.
But underneath, it’s powered by smart data structures: Strings, Hashes, Lists, Sets, Sorted Sets.
That’s why Redis isn’t just fast — it’s a data structure engine for real-time systems 🚀
#Redis #DSA #SystemDesign #CodeWithIshwar
There is NO perfect system design.
Netflix scaled → changed architecture
Amazon trades consistency for availability
Uber keeps redesigning systems
Reality:
👉 Every system is a trade-off
#SystemDesign #Backend #Scalability #codewithishwar
🌐 Type a URL → DNS kicks in 🌐
Cache → Resolver → Root → TLD → IP
⚡ Cache = fast
🐢 No cache = slow
#dns #systemdesign #systemdesign #dns #backend #programming #codewithishwar
Scaling too early is a mistake.
You don’t scale your system—you scale your problems.
#SystemDesign #Scalability #BackendEngineering #SoftwareEngineering #CodeWithIshwar
Production was down.
Everything looked normal.
That’s when you know:
You’re solving a puzzle, not debugging.
#programming #systemdesign #codewithishwar
Most devs write code. Few understand what happens after.
Your code → AST (Abstract Syntax Tree), not executed as text.
Example: a = 2 + 3 * 4 → * before +
Code = string
AST = logic
#CodeWithIshwar #Programming #Developers
🧠 Thread vs Async vs Queue
Not alternatives. Different answers.
🧵 Threads → parallel work
⚡ Async → don’t block
📦 Queue → do it later
Real systems use all three.
Scalability = choosing based on the problem.
#SystemDesign #Concurrency #CodeWithIshwar
I almost overcomplicated this problem. 😅
LeetCode 3546 — Equal Sum Grid Partition
At first: “Try all cuts” ❌
But the trick is simple:
If total sum is even → find a prefix = total / 2
That’s it.
No brute force. Just clarity.
#leetcode #dsa #java #programming #codewithishwar
Most developers solve DP wrong.
They only track the best path.
But sometimes…
your worst path becomes your best.
(-ve × -ve = +ve)
That’s the trick behind LeetCode 1594.
- CodeWithIshwar 🚀 #codewithIshwar
Most developers get stuck not because problems are hard.
They get stuck because they don’t have a system.
Here’s my approach to solve any coding problem:
Strong developers don’t guess.
- Ishwar Chandra Tiwari | CodeWithIshwar
#CodeWithIshwar #leetcode #programming #developers
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