### Consistent Hashing Ring
In naive mod hashing (hash(key) % N), adding 1 node forces nearly 100% of keys to move, triggering cache stampedes. Consistent hashing assigns nodes and keys to positions on a circle, moving only $\frac{1}{N}$ of keys when nodes join or leave.

Python 3.11

•

Interactive Challenge

+95 XP

Challenge Objective

Calculate keys remapped in consistent hashing and output 'KEYS_MOVED: 909'.

solution.py

UTF-84 SpacesAuto-saved

cpython3.11:~/workspace

CPython 3.11.8 (WASM)

$python3 -u solution.py

Click "Compile & Run" (or press Ctrl + Enter) to compile AST, verify bytecode, and execute the solution.

•

Module 1: Consistent Hashing & Ring Partitions•Lesson 1

1.1 Consistent Hashing with Virtual Nodes