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:

List the key non-functional requirements (eg low latency, scalability, reliability, etc.)...

API Design

1 - Client requests the api using the longURL

2 - If it exists in the database, return it

3 - If it doesn't exist in the database, generate a new unique ID

3.1 - Convert the ID to shortURL using the base64 conversion

3.2 - Save ID, shortURL, longURL in the DB.

High-Level Design

1 - Client requests the api using the longURL

2 - If it exists in the database, return it

3 - If it doesn't exist in the database, generate a new unique ID

3.1 - Convert the ID to shortURL using the base64 conversion

3.2 - Save ID, shortURL, longURL in the DB.

Detailed Component Design

We can use base64 to convert the unique ID to a shortURL.