Kushagra Mathur

Software Engineer | AI Builder
Turning ideas into products with code.
Sharing code, system design & career insights

[Kushagra Mathur @CoderGhost37]

Every large internet company uses CDNs because they make applications:

⚡ Faster

📉 Cheaper to operate

🌍 Better for global users

Tomorrow: Message Queues—why modern systems don't process every task immediately.

[Kushagra Mathur @CoderGhost37]

Your server might be in Mumbai.

But your users are in London, New York, Sydney, and Tokyo.

Why should every request travel thousands of kilometers? 👇

#SystemDesign #CDN #Backend #WebPerformance #SoftwareEngineering

[Kushagra Mathur @CoderGhost37]

A CDN isn't a replacement for your backend.

Think of it as another layer in your architecture:

Browser Cache → CDN → Application → Redis → Database

Each layer reduces latency and load.

[Kushagra Mathur @CoderGhost37]

@ramxcodes The hardest experience requirement to satisfy is “0 years.”

[Kushagra Mathur @CoderGhost37]

@SumitM_X Nextjs, is a React framework which is used to build full-stack applications.

Nestjs, is a javascript backend framework build on nodejs and expressjs which is used to build APIs, microservices, etc

[Kushagra Mathur @CoderGhost37]

@SumitM_X It’s preferred because String objects are immutable and can remain in memory until garbage collection, making them harder to clear. A char[] can be explicitly overwritten immediately after authentication, reducing the window during which sensitive data remains in memory.

[Kushagra Mathur @CoderGhost37]

@Palakonweb Hi, let's connect

[Kushagra Mathur @CoderGhost37]

@jsmasterypro Classes should focus on cooking. Not supply chain management.

[Kushagra Mathur @CoderGhost37]

@ramxcodes AI got better. Product decisions didn’t.

[Kushagra Mathur @CoderGhost37]

@mehulmpt Have you considered canceling your transport and walking to save $200? That should do it.

[Kushagra Mathur @CoderGhost37]

@mehulmpt AI launches have become limited-time events. 😭

[Kushagra Mathur @CoderGhost37]

@akshaymarch7 Comparison is useful only if it tells you what to learn next.

[Kushagra Mathur @CoderGhost37]

@aryanlabde Claude can write code better than many developers.
Shipping a product still takes much more than writing code.

[Kushagra Mathur @CoderGhost37]

@nirudhuuu The real unlock is moving from interactive AI to background AI.

That’s when agents become infrastructure instead of tools.

[Kushagra Mathur @CoderGhost37]

@mehulmpt They didn't buy attention.
They earned timelines.

[Kushagra Mathur @CoderGhost37]

@akshaymarch7 You can memorize the architecture. You can’t fake the trade-offs.

[Kushagra Mathur @CoderGhost37]

@mehulmpt Sometimes people don’t want the perfect answer.

They just want the burden of deciding lifted for a moment.

[Kushagra Mathur @CoderGhost37]

@jsmasterypro AI doesn’t introduce bugs as often as it introduces ambition.