Designing A Simple Url Shortening Service A TinyURL Approach - System Design

Requirements

POST /shorten
{ long_url }
→ { short_url }
GET /{short_code}
→ 302 redirect

Client

API Gateway

+-------------------+

| |

Shorten Service Redirect Service

| |

ID Generator Cache (Redis)

| |

+-------> Database

urls(
  id BIGINT PK,
  short_code VARCHAR UNIQUE,
  long_url TEXT,
  created_at,
  expires_at
)

Flow:

Read → Cache → DB fallback → update cache

POST /shorten
{ long_url }
→ { short_url }
GET /{short_code}
→ 302 redirect

Client

API Gateway

+-------------------+

| |

Shorten Service Redirect Service

| |

ID Generator Cache (Redis)

| |

+-------> Database

urls(
  id BIGINT PK,
  short_code VARCHAR UNIQUE,
  long_url TEXT,
  created_at,
  expires_at
)

Flow:

Read → Cache → DB fallback → update cache