Build Your Own Key-Value Storage Engine—Week 6

Block-Based SSTables and Indexing

Jan 21 • Teiva Harsanyi

4

1

Build Your Own Key-Value Storage Engine—Week 5

Leveling and Key-Range Partitioning

Jan 14 • Teiva Harsanyi

3

The Cold Start Problem

The cold start problem is a chicken-and-egg trap: no users without value, no value without users.

Jan 7 • Teiva Harsanyi

18

3

December 2025

Build Your Own Key-Value Storage Engine—Week 4

Deletes, Tombstones, and Compaction

Dec 17, 2025 • Teiva Harsanyi

4

Build Your Own Key-Value Storage Engine—Week 3

Durability with Write-Ahead Logging

Dec 3, 2025 • Teiva Harsanyi

5

November 2025

Linus Torvalds vs. Ambiguous Abstractions

There’s no issue with abstracting code into a helper function. If we want to optimize for cognitive load, the intent should be as clear as possible…

Nov 26, 2025 • Teiva Harsanyi

4

2

Build Your Own Key-Value Storage Engine—Week 2

LSM Tree Foundations

Nov 19, 2025 • Teiva Harsanyi

12

Nothing Beats Kindness

No act of kindness, no matter how small, is ever wasted.

Nov 13, 2025 • Teiva Harsanyi

16

4

Build Your Own Key-Value Storage Engine—Week 1

In-Memory Store

Nov 5, 2025 • Teiva Harsanyi

16

October 2025

Horror Coding Stories: Therac-25

In total, there were six known radiation overdoses involving the Therac-25,and at least three were fatal.

Oct 31, 2025 • Teiva Harsanyi

5

Build Your Own Key-Value Storage Engine

Eight Weeks to a Working Key-Value Storage Engine

Oct 29, 2025 • Teiva Harsanyi

14

4

1

Speed vs. Velocity

On paper, the team delivered 10 story points. That is only speed, though, not velocity. If we care about direction as well, the team only delivered a…

Oct 22, 2025 • Teiva Harsanyi

8

1