Engineer
Hey, I'm Gurshaan
I'm a CS student who loves designing and building meaningful things for the web. These days, I'm focused on creating SaaS products, websites, backends — and exploring whatever else sparks my curiosity.
Stack
Activity
Projects
Writing
How Authenticator Apps Work: A Technical Deep Dive into TOTP
A developer-focused explanation of authenticator apps, TOTP (RFC 6238), otpauth URIs, time drift handling, and the security properties behind offline 2FA codes.
April 7, 2026
Docker Engine: Under the Hood — From Monolith to Modular Architecture
Understanding the Docker Engine internals: evolution from monolithic daemon to modular architecture. Learn about containerd, runc, OCI standards, daemonless containers, and how Docker actually creates and runs containers.
February 2, 2026
Why Google Pub/Sub breaks silently in Bun
The reason behind the error "undefined undefined: undefined". Understanding gRPC, REST fallback, and when Node.js is the safer choice for GCP workloads.
January 27, 2026