PostHog Handbook Library
An unofficial PostHog handbook reader with search and eBook downloads.
Publishes web, EPUB, and printable editions from PostHog’s public handbook. Editions include source links, publication dates, and a summary of changes.
View GitHubHow PostHog runs ClickHouse at scale
ClickHouse powers nearly every analytical feature in PostHog: trends, funnels, retention, paths, session replay, error tracking, logs, data warehouse queries, and more.
Unofficial edition · 2026-10-05 · Source: PostHog
Engineering volume selected. How PostHog runs ClickHouse at scale.
Features
- Searchable web reader
- Offline web access
- Complete and section-level eBooks
- Printable HTML
- Downloadable HTML archive
- Weekly rebuilds and change summaries
Technical notes
Publishing
A Node script reads the handbook source from PostHog/posthog.com. GitHub Actions rebuilds weekly, deploys to GitHub Pages, and attaches files to dated releases.
Change summaries
Source manifests are compared with the previous release to produce Markdown and JSON change reports.
Attribution
Generated pages and editions include source links and dates. The reader is an unofficial project; the original handbook remains on PostHog’s website.