Bytes & B-Tree's
System Design RoadmapThe definitive deep-dive publication on databases — from storage atoms to distributed systems, from first principles to the bleeding edge. Weekly issues for engineers who want to truly understand how data works.
| Platform |  | Pricing | Only free issues | Publishes | Twice weekly |
|---|---|---|---|---|---|
| Issues | 8 | Founded | a month ago | Last Issue | 6 days ago |
| Active | |||||
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bytesbtrees.substack.comLatest Issues
IMS, CODASYL & CODD's relational model — what came before SQL, why it failed, and the idea that changed everything
The year is 1966. NASA is three years away from putting a man on the Moon. The Apollo programme is the largest engineering project in human history, involving 400,000 people, 20,000 contractors, and roughly 10 million individual parts. IB...
Why flat files fail — the six problems that forced databases into existence
In 1969, an engineer at a company called North American Rockwell was trying to track parts inventory across an Apollo spacecraft manufacturing programme. The data lived in flat files — sequential binary files on magnetic tape, organised b...
Files, block devices & the OS abstraction — and the three places where it leaks
There’s a mental model most engineers carry about how files work: you open a file, you write bytes, you close it, those bytes are on disk. Clean. Simple. Abstracted.
That model is accurate enough for writing a log file or saving a config...
Disk geometry & the I/O stack — why spinning disks changed software architecture, and what SSDs didn't fix as much as you'd think
Last week we talked about the memory hierarchy — the stack from CPU registers down to spinning metal, and the enormous latency gaps between each layer. This week we go one level deeper into the bottom two layers of that stack: hard disk d...
172 issues, completely mapped — every concept, every track, every connection
This is the syllabus. All three years. Everything we’ll cover, in order, with enough detail that you can decide whether this newsletter is right for you before reading a single issue.
Bytes & B-trees | Pre-launch #3 of 3 | Free | Bo...
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System Design Interview Roadmap - Step by step process that will make you comfortable, familiar and then expert at System Design.
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