Sachin Kasana

Principal Engineer by day, DevTools builder by night 🌙 | Love working with Node.js, React & AI | Sharing insights on clean code, performance, and web development. https://json-formatter-dev.vercel.ap

india Joined on Jun 30, 2022 https://sachinkasana-dev.vercel.app/

Education

MCA

Work

Full-stack Developer | Principal Engineer

Sachin Kasana

Aug 7

Production-Grade Node.js Permission Model: Lock Down Your Runtime

#javascriptdevelopmen #javascripttips #backendsecurity #node

1 min read

Sachin Kasana

Aug 7

Node.js 24 vs 22 in 2025: What’s New, What Breaks, and How to Upgrade Safely

#node #upgradesandmigration #backenddevelopment #bestpractices

1 min read

Sachin Kasana

Aug 7

Retry Logic in Node.js: How to Handle Flaky APIs Without Losing Your Mind

#bestpractices #backend #javascripttips #optmization

2 min read

Sachin Kasana

Aug 7

REST vs GraphQL vs OData — Choosing the Right API for the Right Job

#architecture #graphql #odata #restapi

3 min read

Sachin Kasana

May 31

I Replaced My Spinner with a Skeleton — And My UX Skyrocketed

#webdev #performancemanagemen #javascriptdevelopmen #uxdesign

3 min read

Sachin Kasana

May 31

Stop Using Switch Statements — Use a Lookup Object Instead

#webdev #cleancode #javascript #codingpatterns

3 min read

Sachin Kasana

May 31

How Node.js Handles High Concurrency Without Threads (And Why It Still Blocks Sometimes)

#programming #performance #node #optimization

4 min read

Sachin Kasana

May 14

How Web Workers Saved My JavaScript App from Freezing on Every CSV Upload

#webdev #webworker #optimization #performance

3 min read

Sachin Kasana

May 9

Most people think lazy loading is always good.

#performance #react #javascript

1 min read

Sachin Kasana

May 14

Avoid These Lazy Loading Mistakes That Could Slow Down Your Website (with Real Fixes)

#javascript #react #bestpractices #performance

3 min read

Sachin Kasana

May 14

Dockerizing Node.js for Developers (Not DevOps)

#devopstool #node #javascript #dockerimage

2 min read

Sachin Kasana

May 14

SOLID Principles in JavaScript & TypeScript — Real-World Examples You Can Actually Use

#architecture #javascript #designpatterns #soliddesignprinciple

4 min read

Sachin Kasana

Apr 28

10 Node.js Best Practices I Wish I Knew Sooner

#performance #javascript #programming #bestpractices

4 min read

Sachin Kasana

Apr 26

I Built a Free JSON Formatter & Viewer for Developers — Feedback Welcome!

#webdev #devtools #productivity

1 min read

Sachin Kasana

Apr 27

Design Patterns in JavaScript — Part 4: The Adapter Pattern

#programming #cleancode #designpatterns #javascript

2 min read

Sachin Kasana

Apr 27

️‍️ Design Patterns in JavaScript — Part 3: The Observer Pattern

#javascript #architecture #designpatterns #programming

2 min read

Sachin Kasana

Apr 27

Design Patterns in JavaScript — Part 2: The Factory Pattern

#architecture #designpatterns #cleancode #javascript

2 min read

Sachin Kasana

Apr 27

Design Patterns in JavaScript — Part 1: Singleton & Module (With Real Examples)

#designpatterns #javascript #architecture #cleancode

3 min read

Sachin Kasana

Apr 27

How to Monitor Frontend Errors Like a Backend Pro

#sentry #observability #frontend #javascript

3 min read

Sachin Kasana

Apr 27

⚡ From 5s to 500ms: How I Reduced My Page Load with Real Metrics

#corewebvitals #webperf #pagespeed #frontendperformance

2 min read

Sachin Kasana

Apr 27

10x Your App’s Speed: Migrate to the New Node.js and Unlock Performance Features

#javascriptperformanc #nodejsdevelopment #performance #backend

3 min read

Sachin Kasana

May 4

From 10 Seconds to 2: Real Techniques for Reducing Load Times with Practical Examples

#webperf #weboptimization #sitespeed #optimization

2 min read

Sachin Kasana

May 4

Mastering Web Rendering: Choosing the Right Strategy for Your Site’s Speed and SEO

#javascriptdevelopmen #webrendering #javascript #rendering

5 min read

Sachin Kasana

Apr 29

Node.js Array Limits: What’s the Maximum Length You Can Reach?

#javascriptdevelopmen #javascript #node #nodejsdevelopment

2 min read

Forem

Sachin Kasana

Badges

Three Year Club

Writing Debut

Two Year Club

One Year Club

Skills/Languages

Currently hacking on

Available for

Production-Grade Node.js Permission Model: Lock Down Your Runtime

Node.js 24 vs 22 in 2025: What’s New, What Breaks, and How to Upgrade Safely

Retry Logic in Node.js: How to Handle Flaky APIs Without Losing Your Mind

REST vs GraphQL vs OData — Choosing the Right API for the Right Job

I Replaced My Spinner with a Skeleton — And My UX Skyrocketed

Stop Using Switch Statements — Use a Lookup Object Instead

How Node.js Handles High Concurrency Without Threads (And Why It Still Blocks Sometimes)

How Web Workers Saved My JavaScript App from Freezing on Every CSV Upload

Most people think lazy loading is always good.

Avoid These Lazy Loading Mistakes That Could Slow Down Your Website (with Real Fixes)

Dockerizing Node.js for Developers (Not DevOps)

SOLID Principles in JavaScript & TypeScript — Real-World Examples You Can Actually Use

10 Node.js Best Practices I Wish I Knew Sooner

I Built a Free JSON Formatter & Viewer for Developers — Feedback Welcome!

Design Patterns in JavaScript — Part 4: The Adapter Pattern

️‍️ Design Patterns in JavaScript — Part 3: The Observer Pattern

Design Patterns in JavaScript — Part 2: The Factory Pattern

Design Patterns in JavaScript — Part 1: Singleton & Module (With Real Examples)

How to Monitor Frontend Errors Like a Backend Pro

⚡ From 5s to 500ms: How I Reduced My Page Load with Real Metrics

10x Your App’s Speed: Migrate to the New Node.js and Unlock Performance Features

From 10 Seconds to 2: Real Techniques for Reducing Load Times with Practical Examples

Mastering Web Rendering: Choosing the Right Strategy for Your Site’s Speed and SEO

Node.js Array Limits: What’s the Maximum Length You Can Reach?