Arpan Das

@adasarpan

Full Stack Developer at GUNI

Mathura, Uttar Pradesh (India)Joined April 2023

About

Experienced full-stack developer skilled in Node.js, React.js, and Django, with expertise in building and maintaining web applications. Proficient in using Redis DB and MongoDB for back-end development, and Antd and Material UI for front-end design. Strong knowledge of C++, Python, Rust, and Julia. Well-versed in tools such as Postman, Git, Github, and Linux.

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Arpan Das's blogs

ARPAN DAS BLOGadasarpan.hashnode.dev15 posts

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Recently published

ADArpan Dasadasarpan.hashnode.devJun 25 · 6 min read

Why Redis Lua Scripts Are a Superpower for Backend Engineers

When developers first start using Redis, they often think of it as a fast key-value store. Need caching? Redis. Need sessions? Redis. Need queues? Redis. Need rate limiting? Redis. But one of Redis' m

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ADArpan Dasadasarpan.hashnode.devJun 25 · 7 min read

Why Some Rate Limiters Slow Down Your API

Rate limiting exists to protect your application. Ironically, a poorly implemented rate limiter often becomes the thing that brings your application down. I've seen APIs capable of serving thousands o

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ADArpan Dasadasarpan.hashnode.devNov 11, 2025 · 13 min read

How Profile Guided Optimization Unlocks Next-Level Performance?

Profile-Guided Optimization (PGO) means: run your program, record where it actually spends time, and then recompile it so the compiler optimizes those hot paths first. It replaces guesses with measurements. Without PGO, compilers estimate these from ...

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ADArpan Dasadasarpan.hashnode.devFeb 12, 2025 · 3 min read

How To Create And Verify JWT Tokens in GO

JWT Tokens are popular methods for securely transmitting information between parties as a JSON Object. They are commonly used for authentication and authorization in web applications. Prerequisites Before we start, make sure you have the following “...

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ADArpan Dasadasarpan.hashnode.devJan 2, 2025 · 3 min read

Building An HTTP Client In Go From Scratch

In this blog, we will explore the process of building an HTTP Client from scratch using Raw TCP Connections in Go. This is going to be an excellent way to deepen your understanding of how HTTP requests and response works under the hood. Introduction ...

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Arpan Das

About

Available for

Arpan Das's blogs

Recently published

Why Redis Lua Scripts Are a Superpower for Backend Engineers

Why Some Rate Limiters Slow Down Your API

How Profile Guided Optimization Unlocks Next-Level Performance?

How To Create And Verify JWT Tokens in GO

Building An HTTP Client In Go From Scratch

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Arpan Das

About

Available for

Arpan Das's blogs

Recently published

Why Redis Lua Scripts Are a Superpower for Backend Engineers

Why Some Rate Limiters Slow Down Your API

How Profile Guided Optimization Unlocks Next-Level Performance?

How To Create And Verify JWT Tokens in GO

Building An HTTP Client In Go From Scratch