Serverless Event Pipeline

POST /shorten      →  Lambda (shortener)  →  DynamoDB (urls table)

GET /{code}        →  Lambda (redirect)   →  DynamoDB → SQS → 302
                                                         ↓
                                              Lambda (analytics)
                                                         ↓
                                              DynamoDB (clicks + counter)

GET /stats/{code}  →  Lambda (stats)      →  DynamoDB (both tables)

Shorten URL

Creates a short code, writes to DynamoDB with a conditional write to prevent collisions.

POST /shorten

// Response will appear here

Follow Redirect

Reads from DynamoDB, fire-and-forget sends a click event to SQS, returns 302. Response under 100ms.

GET /{code}

// Response will appear here

Click Analytics

Queries both DynamoDB tables. The analytics Lambda has already processed clicks asynchronously via SQS, aggregating top user agents and referers.

GET /stats/{code}

// Stats will appear here