Requirements

Functional Requirements:

• Create a short URL for a given long URL.
• Return the long URL associated with a given short URL.

Non-Functional Requirements:

• Auto retry
• support url with different suffix
• 99.9% uptime

API Design

transform api

which is xxx.com/transform/{transform-url}

redirect api

which is xxx.com/{short-url}

High-Level Design

client send url to server, we save it in db and have a associate short one generated

Detailed Component Design

shorten url by saving the long url in our own database, and a shorten one is return by encryption. we will do the redirect