Learn PostgreSQL the way the source code actually works
Start free. Upgrade when you want every cookbook recipe and learning pathway — grounded in PostgreSQL internals.
Free
Get a real feel for the depth.
- 10 cookbook recipes
- 5 learning-pathway lessons
- Full error reference (symptoms, root cause, recovery)
- GUC + glossary reference
Pro
Billed monthly. Cancel anytime.
- Everything in Free
- All cookbook recipes
- All 5 learning pathways
- New content as it ships
Pro
~$16.58/month · save ~50% vs monthly
- Everything in Free
- All cookbook recipes
- All 5 learning pathways
- New content as it ships
Questions
What does "free" actually include?
10 full cookbook recipes and 5 complete pathway lessons — not teasers. The entire error reference, GUC reference, and glossary stay free forever. No card required, no trial period.
How is this different from the official PostgreSQL docs?
The docs tell you what a feature does. This tells you why it behaves the way it does under load, what to look for when it breaks, and the exact steps to recover — written by engineers who have handled these incidents in production.
Is this worth it if I already know PostgreSQL?
Most experienced DBAs find the internals depth useful — query planner mechanics, autovacuum tuning, and replication edge cases are rarely covered in a single place with source-level detail. The free tier is complete enough to judge before upgrading.
What exactly do I get with Pro?
All cookbook recipes and all five structured learning pathways end-to-end. New content ships directly into your account — no extra charge.
What is the difference between monthly and annual?
Same access, same content. Annual ($199/year) works out to about $24.99/month and saves roughly 35% compared to paying month to month. Monthly ($24.99) is flexible with no long-term commitment.
Can I cancel anytime?
Yes. Use the cancellation form on your account page or reply to any receipt email. Your access continues until the billing period ends — no prorating, no hidden fees.
Do you offer refunds?
Yes — if Pro is not what you expected, email us within 14 days of your first charge and we will refund in full, no questions asked.
Can I share my account with my team?
Accounts are single-user. If your team needs access, each person gets their own account. Email us before purchasing and we will work something out — we are not going to make this painful.
What payment methods do you accept?
All major credit and debit cards.
What happens to my progress if I downgrade?
Your bookmarks, reading history, and lesson progress are saved permanently. If you move back to free, Pro-only content becomes locked but nothing is deleted. Upgrade again and everything is exactly where you left it.
Built for engineers on call, not for certification prep
Incident-ready
Every error page maps SQLSTATE to symptom, root cause, recovery steps, and prevention — the exact shape of a real incident runbook.
Internals-first
Explanations point into the PostgreSQL source so you understand the mechanism, not just the workaround. Useful long after the incident is closed.
Structured progression
Five pathways — Foundations, Performance, Operations, HA Architecture, The Engine Room — designed as a progression so you build a mental model, not just a bag of tricks.