Systems

Every system on HowItScales, from well-known products to classic designs. Click through each one and follow a request hop by hop.

UberMobility

Live driver locations, matching through a geospatial index, and surge pricing.

5 guided flowsSimulation#ride-hailing#geospatial#real-time
13 components1 documented
URL ShortenerWeb basics

Turns long links into short ones and redirects fast, with a cache in front of the database.

2 guided flowsSimulation#caching#read-heavy#classic
8 componentsteaching model