[{"_1":2,"_64":-5,"_65":-5},"loaderData",{"_3":4,"_33":34,"_62":-5,"_63":-5},"root",{"_5":-5,"_6":-5,"_7":8,"_20":-5,"_21":22,"_23":24,"_27":28},"user","shoppingCartId","shoppingCart",{"_9":10,"_11":12,"_13":14,"_15":16,"_17":18,"_19":12},"count",0,"free",true,"updatedAt","2025-12-21T10:00:12.006Z","paymentGateway","STRIPE","cartItems",[],"loading","toast","locale","en","constants",{"_25":26},"paypalClientId","AX53Cwz8jR6rVVzzZiZNWWXl0dGagi-GZrjG-S3Ua14E5nrKMn7DxDQ730O4R8LusLPp49ALn6aRVaEy","publishers",{"_29":30,"_31":32},"companies",[],"universities",[],"routes/_store+/_readers+/email_author.$slug/route",{"_35":36,"_61":-5},"book",{"_37":38,"_39":40,"_41":42,"_43":44,"_45":46,"_47":48},"id","Z2lkOi8vbGVhbnB1Yi9TdG9yZTo6Qm9va1Byb2R1Y3QvNzQ1NTk","title","Code a database in 45 steps (Go)","state","published","contactAuthorMethod","email","aboutText","

This series of test-driven small coding puzzles lets you code a database from scratch (no dependencies).

There are 45 puzzles, most puzzles are fewer than 50 lines of code, covering ALL major aspects of databases, including KV storage engines, LSM-Tree indexes, SQL, concurrent transactions, ACID, etc.

This sounds complicated, but software dev often evolves dealing with complexities, a skill not learned from tutorial-ish code or simple CRUD jobs.

This is the 1st Trial of Code project (2025). I plan to release more next year. Subscribe to get updates.

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