Interactive visualizations I use to explain systems concepts across posts and projects.

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Memtable L0 L1 L2

LSM-Tree

data structure

An interactive demo of a simple LSM-based key-value storage engine: Put, Get, Delete, memtable flushes, and compaction across SSTable levels.

Used in:

• The Memtable: where writes go to wait
• Building BeachDB: A Database from Scratch (in Go)

Skip List

data structure

A visual walkthrough of search, insert, and delete operations in a probabilistic sorted structure with fast lanes over a linked list.

Used in:

• The Memtable: where writes go to wait

app page cache disk

fsync() Durability

syscall

A journey of fsync() from a Go goroutine through a Unix-like system, down the storage stack, and toward NAND gates on an SSD.

Used in:

• Durability is a promise you can't hand-wave: Write-Ahead Log (v1)