Field manuals
for builders.
A small, slowly-growing library of practical ebooks. Each one written from real production work — the kind you keep open in a second tab, not on a shelf.
Featured release · Vol. 01
SQL Performance Masterclass.
A practical ebook for writing fast, scalable SQL. Fifty pages, pulled from years of staring at slow queries in production. It's tight, opinionated, and written to be read in a single afternoon — then kept open on a second monitor every time you touch a query plan.
- Pages
- 50
- Format
- Read
- 2h read
- Price
- Free
Catalog · 01 / 01
Every title. Slowly written, fast to read.
I publish slowly. Each one is the book I wish I'd had open in a second tab when I was learning the topic the hard way — short, opinionated, and meant to be read in a single sitting.
Vol. 01
Free this seasonVol. 01PDFEXPLAIN · INDEXES · JOINS
SQL
Performance
MasterclassPostgreSQL & MySQL
ITAI · 2026By
Aysun Itai
SQL Performance Masterclass
Field-tested EXPLAIN, index, join, pagination, and aggregation patterns for PostgreSQL and MySQL.
50 pages · PDFFreeVol. 02
In progressComing soonThe TypeScript Reliability Handbook
Working title — I'm writing it now.
Drops · Summer 2026—Vol. 03
In progressComing soonNext.js in Production
Working title — I'm writing it now.
Drops · Late 2026—
New releases
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