vote-frame-shortener-link

Frame-Shortener is a URL shortening service built in Go, utilizing MongoDB for storage. It allows the creation of short links that redirect to longer URLs within specified allowed domains.

Configuration

Before running the service, ensure you set the following environment variables:

• ALLOWED_DOMAINS: Comma-separated list of domains for which short URLs can be created. Example: example.com,anotherdomain.com
• MONGO_URI: URI for connecting to the MongoDB instance. Example: mongodb://localhost:27017
• MONGO_DB: The MongoDB database name where the URL mappings will be stored.

Running the Service

To run the service, execute the binary or run the Go file directly:

go run main.go

Ensure the environment variables are set before starting the service.

Or by using docker compose:

docker compose build
docker compose up -d

See .env file for environment variables.

API Usage

Adding a New URL

To add a new URL, send a request to /add/<long-link>. The service will respond with a JSON containing the short link.

Example Request:

curl http://localhost:8080/add/example.com/my/long/link

Example Response:

{
  "link": "1a2b3c4d"
}

You can then access the short link via http://localhost:8080/1a2b3c4d, which will redirect you to the long link you provided.

Implementation Details

• The service listens on port 8080.
• Short links are generated using UUIDs, truncated to the first 8 characters.
• MongoDB is used to store the mapping between short links and long URLs.
• An index is created on the shortLink field in the MongoDB collection for efficient lookup.

Ensure that the MongoDB instance is running and accessible at the URI provided in the MONGO_URI environment variable before starting the Frame-Shortener service.