Detailed Component Design

Deep dive into 2-3 key components. Explain how they work, how they scale, discuss tradeoffs, capacity, and any relevant algorithms or data structures.

Overview

The Write Path Service is responsible for creating short URLs from long URLs. It handles the validation of incoming URLs, generates unique short URLs, and stores the mapping in the database.

Responsibilities

Validate Long URL: Ensure that the provided long URL is well-formed and reachable.
Generate Short URL: Create a unique short URL using a hashing algorithm or a sequential ID generator.
Store Mapping: Save the mapping of the short URL to the long URL in the database.
Return Short URL: Provide the generated short URL back to the client.

API Endpoints

Endpoint: POST /api/shorten
- Request Body:
- { "longUrl": "https://www.example.com/some/very/long/url"}
- Response:
- { "shortUrl": "https://short.ly/abc123"}

Workflow

Receive Request: The service receives a request to shorten a URL.
Validate URL:
- Check if the long URL is valid (e.g., proper format, reachable).
- Return an error response if validation fails.
Generate Short URL:
- Use a hash function or a sequential ID generator to create a unique short URL.
- Ensure that the generated short URL does not already exist in the database.
Store Mapping:
- Save the mapping of the short URL to the long URL in the database.
- Optionally, store additional metadata (e.g., creation timestamp, user ID).
Return Response: Send the generated short URL back to the client.

Error Handling

Duplicate Short URL: If a generated short URL already exists, retry generating a new one.
Database Errors: Handle any database errors gracefully and return appropriate error messages to the client.

Performance Considerations

Caching: Frequently accessed mappings can be cached to reduce database load.
Rate Limiting: Implement rate limiting to prevent abuse (e.g., too many URL shortening requests from the same IP).

the read path

Recive request , validate short url and check aganst cahe, and it add to the cache if iits found in dbsomethign its return if not will retarn a 404

Submissions

Displaying Solutions with Scores Ranging from 1 to 10

Submissions

Displaying Solutions with Scores Ranging from 1 to 10