@pankaj-sharma-dev

pankajsharmadev

@pankaj-sharma-dev

Real-world systems: build, break, and scale.

Faridabad, IndiaJoined April 2026

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pankajsharmadev's blogs

Bulld and Scalebuild-and-scale.hashnode.dev3 posts

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Ppankajsharmadevbuild-and-scale.hashnode.devMay 1 · 4 min read

When “Works on Lambda” Breaks on ECS: A Concurrency Bug from Misusing Singletons in .NET

We recently migrated a .NET Core application from .NET 8 to .NET 10 and moved its hosting model from AWS Lambda to ECS. The service acts as a wrapper around a downstream API that reads and updates cli

Ppankajsharmadevbuild-and-scale.hashnode.devApr 16 · 4 min read

Chromium + Puppeteer Broke After ASP.NET 8 → 10 Upgrade — The Hidden Snap Trap in Docker

We upgraded a service from ASP.NET 8 to 10. No application code changed—but our Puppeteer-based document pipeline completely broke. The root cause wasn’t .NET. It was a subtle base image change: Debi

Ppankajsharmadevbuild-and-scale.hashnode.devApr 16 · 1 min read

Hello World — Building and Learning in Public

Hello World — Building and Learning in Public I work on backend systems, mostly in the .NET ecosystem, trying to understand how systems behave under scale, failures, and real-world constraints. This b

pankajsharmadev

About

Available for

pankajsharmadev's blogs

Recently published

When “Works on Lambda” Breaks on ECS: A Concurrency Bug from Misusing Singletons in .NET

Chromium + Puppeteer Broke After ASP.NET 8 → 10 Upgrade — The Hidden Snap Trap in Docker

Hello World — Building and Learning in Public

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pankajsharmadev

About

Available for

pankajsharmadev's blogs

Recently published

When “Works on Lambda” Breaks on ECS: A Concurrency Bug from Misusing Singletons in .NET

Chromium + Puppeteer Broke After ASP.NET 8 → 10 Upgrade — The Hidden Snap Trap in Docker

Hello World — Building and Learning in Public