# D008 - Fully Custom Analytics

> D008 - Fully Custom Analytics: a note from the Obsidian vault behind https://saifsiddiqui.in.

Canonical URL: https://saifsiddiqui.in/te/brain/d008-fully-custom-analytics/ (this is its markdown representation; the same URL serves HTML to browsers)
Other languages: en: https://saifsiddiqui.in/brain/d008-fully-custom-analytics/ · hi: https://saifsiddiqui.in/hi/brain/d008-fully-custom-analytics/ · kn: https://saifsiddiqui.in/kn/brain/d008-fully-custom-analytics/ · ur: https://saifsiddiqui.in/ur/brain/d008-fully-custom-analytics/ · ar: https://saifsiddiqui.in/ar/brain/d008-fully-custom-analytics/ · hi-Latn: https://saifsiddiqui.in/hi-latn/brain/d008-fully-custom-analytics/

**Type:** decision  
**Status:** accepted  
**Created:** 2026-07-17  
**Tags:** decision, analytics, flagship

## D008: Analytics: fully custom pipeline

**Context:** Saif wants an in-site analytics product (like PostHog/CleverTap) showing real visitor behavior, explicitly to **showcase skill**.

**Options considered:**
- Capture with PostHog, build only the dashboard, fastest, reliable, but capture isn't "yours".
- **Fully custom**, own tracker + ingest + store + dashboard.

**Decision:** **Fully custom, end-to-end** (chosen by Saif). Implementation: [Custom Analytics](/brain/custom-analytics/).

**Why:** It's the strongest possible engineering proof under [D001 - Site as Proof Principle](/brain/d001-site-as-proof-principle/), the whole pipeline is demonstrably his. Designed to stay lightweight (~3KB tracker, lazy) and privacy-clean (cookieless, IP discarded).

**Trade-offs:** biggest single build chunk (its own [Roadmap](/brain/roadmap/) phase) and adds a datastore (Neon Postgres + Upstash Redis). Honest scaling note for interviews: a columnar store (ClickHouse/Tinybird) at real scale, knowing *when* to scale is itself the signal. Visibility open ([Open Questions](/brain/open-questions/) #5).

## ఇంకా లింక్ చేయబడింది

- [Custom Analytics](/te/brain/custom-analytics/)
- [Open Questions](/te/brain/open-questions/)
- [Phase 4 - Analytics](/te/brain/phase-4-analytics/)
- [Portfolio Brain](/te/brain/portfolio-brain/)
- [Roadmap](/te/brain/roadmap/)

అన్ని గమనికలు: [/te/brain/](/te/brain/)

---

Mohd Saif, Product Engineer. I build solutions, not dead software.
Email: saifmd238@gmail.com · GitHub: https://github.com/Saif-09 · LinkedIn: https://www.linkedin.com/in/mohd-saif-134076141/ · Résumé (PDF): https://saifsiddiqui.in/resume

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- [/llms-full.txt](/llms-full.txt): the complete text of every page in one fetch
- [/agents.md](/agents.md): when to use this site, and how to query it
- [/sitemap-index.xml](/sitemap-index.xml): every URL, in seven languages