bh-urlshortener 0.0.4

A simple URL shortener service.

urlshortener

A self-hosted URL shortener. Shorten a URL, get a redirect, track visit counts. That's it.

API

Method	Path	Description
POST	/shorten	Create a short link
GET	/{code}	Redirect to original URL (307)
GET	/stats/{code}	Visit count + original URL
GET	/healthz	Liveness + DB connectivity check

# shorten
curl -X POST http://localhost:8000/shorten \
  -H "Content-Type: application/json" \
  -d '{"url": "https://example.com/some/long/path"}'
# {"code": "aB3kR7z", "short_url": "http://localhost:8000/aB3kR7z"}

# stats
curl http://localhost:8000/stats/aB3kR7z
# {"code": "aB3kR7z", "url": "https://example.com/some/long/path", "visits": 4}

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Running locally

Prerequisites: Python 3.11, a running PostgreSQL instance.

pip install -e .

# point at your DB (or rely on the default below)
export URLSHORTENER_DATABASE_URL="postgresql+psycopg://user:pass@localhost:5432/urlshortener"

urlshortener serve
# listening on http://127.0.0.1:8000

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Docker Compose

Spins up Postgres + app together:

docker compose up -d 

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Configuration

All settings are environment variables with the URLSHORTENER_ prefix.

Variable	Default	Description
URLSHORTENER_DATABASE_URL	postgresql+psycopg://urlshortener:urlshortener@localhost:5432/urlshortener	SQLAlchemy connection string
URLSHORTENER_BASE_URL	http://localhost:8000	Public base URL used when building short links
URLSHORTENER_HOST	127.0.0.1	Bind address
URLSHORTENER_PORT	8000	Bind port
URLSHORTENER_CODE_LENGTH	7	Length of generated short codes (4–32)
URLSHORTENER_LOG_LEVEL	INFO	Root log level

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Development

pip install -e ".[test]"

pytest          # runs tests + coverage
mypy src        # strict type checking

Tests use an in-memory fake store

License

MIT