Tech

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Pratibimba: a reflection of your app on every pull request

A reflection of your app on every pull request

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Designing a Live-Class Attendance System at Scale

A system design problem involving heartbeats, reconnects, Kafka, and bitmap-based attendance.

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Building a Home for a River: Why I Built swachhmanorama.in For Free

A 21-year-old cleaned 500+ metres of a dying river in Uttar Pradesh with nothing but a phone camera. I built him a website for free. Here's why.

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Analytics Without Google Analytics (or Any Third-Party Tracker)

Building First-Party Analytics: No Google, No Plausible, No Cookie Banner I run my blog on Next.js, Go, Postgres, and Redis. No third-party trackers. Here's how a fire-and-forget event pipeline (Browser -> Go API -> Redis queue -> Postgres) gives me page views, scroll depth, read time, and referrers without shipping a single tracking script to readers. Plus: the PgBouncer + prepared statements bug that took down my overview endpoint, and how I built email notifications.

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Fixing a TODO in go-redis: Using CommandInfo to Route Commands

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From map[T]struct{} to Red-Black Trees: A Deep Dive into go-set (and a bug I fixed)

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RetroDB