Pankaj Tanwar - CS Engineer, writer & creator.

UNLINK vs DEL - A deep dive into how it works internally in Redis 🪢

Pankaj Tanwar Jan 18, 2025

https://pankajtanwar.in/blog/unlink-vs-del-a-deep-dive-into-how-it-works-internally-in-redis

Building a tiny load balancing service using PID Controllers 🚘

Pankaj Tanwar Dec 26, 2024

https://pankajtanwar.in/blog/building-a-tiny-load-balancing-service-using-pid-controllers

I turned my 10 year old tablet into a digital photo frame, displaying google photos album. 🌴

Pankaj Tanwar Jul 15, 2024

https://pankajtanwar.in/blog/i-turned-my-10-year-old-tablet-into-a-digital-photo-frame-displaying-google-photos-album

I built a gnome shell extension to show how much my day, month, year and life has passed.

Pankaj Tanwar Dec 17, 2023

https://pankajtanwar.in/blog/i-built-a-gnome-shell-extension-to-show-how-much-my-day-month-year-and-life-has-passed

Top 3 USELESS JavaScript interview questions 🤮

Pankaj Tanwar Aug 22, 2022

https://pankajtanwar.in/blog/top-3-useless-javascript-interview-questions

How redis expires keys? A dive into how TTL works internally in Redis. 🌊

Pankaj Tanwar Jun 12, 2022

https://pankajtanwar.in/blog/how-redis-expires-keys-a-deep-dive-into-how-ttl-works-internally-in-redis

I quit my job, built 8 freelance projects at a time, and made good money but… lost happiness💡

Pankaj Tanwar Apr 8, 2022

https://pankajtanwar.in/blog/i-quit-my-job-built-8-freelance-projects-at-a-time-and-made-good-money-but-lost-happiness

I built a file upload service without any external library, just pure JavaScript 🤖

Pankaj Tanwar Mar 9, 2022

https://pankajtanwar.in/blog/i-built-a-file-upload-service-without-any-external-library-using-pure-javascript

How I built a real-time blog view counter with NextJs and Firebase 👨‍💻

Pankaj Tanwar Feb 5, 2022

https://pankajtanwar.in/blog/how-i-built-a-real-time-blog-view-counter-with-nextjs-and-firebase

Pagination with Cassandra - let’s deal with paging large queries in python 🐍

Pankaj Tanwar Jan 22, 2022

https://pankajtanwar.in/blog/pagination-with-cassandra-lets-deal-with-paging-large-queries-in-python

I resigned.... what's next? 🚀

Pankaj Tanwar Jan 7, 2022

https://pankajtanwar.in/blog/i-resigned-whats-next

Counting my contributions to a git repo 💻

Pankaj Tanwar Jan 7, 2022

https://pankajtanwar.in/blog/counting-my-contributions-to-a-git-repo

A directory is not a folder.

Pankaj Tanwar Dec 29, 2021

https://pankajtanwar.in/blog/a-directory-is-not-a-folder

Prevent duplicate cron job running.

Pankaj Tanwar Aug 31, 2021

https://pankajtanwar.in/blog/prevent-duplicate-cron-job-running

3% Formula to invest in yourself.

Pankaj Tanwar Aug 29, 2021

https://pankajtanwar.in/blog/3-percent-formula-to-invest-in-yourself

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

Pankaj Tanwar Jul 16, 2021

https://pankajtanwar.in/blog/what-is-latency-lets-deep-dive-and-understand-possible-ways-to-optimise-it

Introducing Bestresources.co - Share & explore personal resources at one place!

Pankaj Tanwar Jun 30, 2021

https://pankajtanwar.in/blog/introducing-bestresourcesco-share-and-explore-personal-resources-at-one-place

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

Pankaj Tanwar Jun 20, 2021

https://pankajtanwar.in/blog/what-is-the-sorting-algorithm-behind-order-by-query-in-mysql

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

Pankaj Tanwar May 30, 2021

https://pankajtanwar.in/blog/have-you-ever-thought-how-nodemon-works-internally-lets-build-our-own-nodemon-in-under-10-minutes

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

Pankaj Tanwar May 21, 2021

https://pankajtanwar.in/blog/do-you-know-01-02-03-in-javascript-here-is-why

The basics you need to know about Kafka [Graphic Explanation Ahead 🖥️]

Pankaj Tanwar May 15, 2021

https://pankajtanwar.in/blog/the-basics-you-need-to-know-about-kafka-graphic-explanation-ahead

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

Pankaj Tanwar Apr 29, 2021

https://pankajtanwar.in/blog/how-to-implement-whatsapp-like-end-to-end-encryption

Interesting analogy to understand synchronous, callback, and async-await (promises) approach like I am 10 Y Kid 🧒

Pankaj Tanwar Apr 23, 2021

https://pankajtanwar.in/blog/interesting-analogy-to-understand-synchronous-callback-and-async-await-promises-approach-like-i-am-10-y-kid

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

Pankaj Tanwar Apr 20, 2021

https://pankajtanwar.in/blog/how-does-github-store-millions-of-repo-and-billions-of-files

How Instagram computes real-time trending hashtags ?

Pankaj Tanwar Apr 17, 2021

https://pankajtanwar.in/blog/how-instagram-computes-real-time-trending-hashtags

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

Pankaj Tanwar Apr 10, 2021

https://pankajtanwar.in/blog/system-design-how-to-design-google-drive-dropbox-a-cloud-file-storage-service

How database indexing actually works internally?

Pankaj Tanwar Mar 31, 2021

https://pankajtanwar.in/blog/how-database-indexing-actually-works-internally

Proxy vs Reverse Proxy - using a real life example!

Pankaj Tanwar Mar 24, 2021

https://pankajtanwar.in/blog/proxy-vs-reverse-proxy-using-a-real-life-example

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

Pankaj Tanwar Mar 15, 2021

https://pankajtanwar.in/blog/system-design-is-client-side-load-balancing-a-good-idea

Scalability Challenge - How to remove duplicates in a large data set (~100M) ?

Pankaj Tanwar Mar 8, 2021

https://pankajtanwar.in/blog/scalability-challenge-how-to-remove-duplicates-in-a-large-data-set-100m

How Twitter stores 500M tweets a day?

Pankaj Tanwar Feb 26, 2021

https://pankajtanwar.in/blog/how-twitter-stores-500m-tweets-a-day

Generating unique IDs in a distributed environment at high scale.

Pankaj Tanwar Feb 18, 2021

https://pankajtanwar.in/blog/generating-unique-ids-in-a-distributed-environment-at-high-scale

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

Pankaj Tanwar Feb 13, 2021

https://pankajtanwar.in/blog/my-journey-from-python-scripts-to-20-freelance-full-stack-projects

Convert number to Indian format number using Javascript.

Pankaj Tanwar Jan 12, 2021

https://pankajtanwar.in/blog/convert-number-to-indian-format-number-using-javascript

Possible ways to iterate a string in JavaScript.

Pankaj Tanwar Jan 10, 2021

https://pankajtanwar.in/blog/possible-ways-to-iterate-a-string-in-javascript

Explain Microservices like I am 10.

Pankaj Tanwar Jan 10, 2021

https://pankajtanwar.in/blog/explain-microservices-like-i-am-10

Advantages & disadvantages of declaring JavaScript functions inside objects.

Pankaj Tanwar Jan 10, 2021

https://pankajtanwar.in/blog/advantages-and-disadvantages-of-declaring-javascript-functions-inside-objects

https://pankajtanwar.in/feed.xml

Posts