# Pankaj Tanwar

CS Engineer, writer, and creator. Sharing thoughts at https://pankajtanwar.in/blogs

Jaipur Joined on  https://pankajtanwar.in/

Education

MNIT Jaipur

Work

Software Developer

Challenge of day #21 - Split a String in Balanced Strings

## Challenge of day #21 - Split a String in Balanced Strings

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Challenge of the day #20 - To Lower Case.

## Challenge of the day #20 - To Lower Case.

Challenge #19 - N-Repeated Element in Size 2N Array.

## Challenge #19 - N-Repeated Element in Size 2N Array.

Challenge #18 - Count Negative Numbers in a Sorted Matrix

## Challenge #18 - Count Negative Numbers in a Sorted Matrix

Challenge #17 - Sum of Unique Elements.

## Challenge #17 - Sum of Unique Elements.

Challenge #16 - Best Time to Buy and Sell Stock

## Challenge #16 - Best Time to Buy and Sell Stock

Challenge #15 - Count Number of Pairs With Absolute Difference K

## Challenge #15 - Count Number of Pairs With Absolute Difference K

Prevent duplicate cron job running.

## Prevent duplicate cron job running.

What is the sorting algorithm behind ORDER BY query in MySQL?

## What is the sorting algorithm behind ORDER BY query in MySQL?

🎉 Launching Bestresources.co : Share & explore personal resources at one place!

## 🎉 Launching Bestresources.co : Share & explore personal resources at one place!

What is latency? Let’s deep dive & understand possible ways to optimise it.

## What is latency? Let’s deep dive & understand possible ways to optimise it.

Have you ever thought, how ‘nodemon’ works internally? Let’s build our own ‘nodemon’ in under 10 minutes!

## Have you ever thought, how ‘nodemon’ works internally? Let’s build our own ‘nodemon’ in under 10 minutes!

Do you know 0.1 + 0.2 ≠ 0.3 in JavaScript? Here is why!

## Do you know 0.1 + 0.2 ≠ 0.3 in JavaScript? Here is why!

How to implement WhatsApp like End-to-end encryption?

## How to implement WhatsApp like End-to-end encryption?

How does Github store millions of repo and billions of files?

## How does Github store millions of repo and billions of files?

System design : How Instagram computes real-time trending hashtags ?

## System design : How Instagram computes real-time trending hashtags ?

How database indexing actually works internally?

## How database indexing actually works internally?

Proxy vs Reverse Proxy - using a real life example!

## Proxy vs Reverse Proxy - using a real life example!

System Design - How to design Google Drive / Dropbox (a cloud file storage service)

## System Design - How to design Google Drive / Dropbox (a cloud file storage service)

System Design : Is client side load balancing a good idea?

## System Design : Is client side load balancing a good idea?

How Twitter stores 500M tweets a day?

## How Twitter stores 500M tweets a day?

Generating unique IDs in a distributed environment at high scale.

## Generating unique IDs in a distributed environment at high scale.

My journey - from python scripts to 20+ freelance full stack projects

## My journey - from python scripts to 20+ freelance full stack projects

Explain the synchronous, callback, and async-await (promises) approach like I am 10🧒