Proxy and cache any HTTP/HTTPS URL with automatic caching.
curl "http://localhost:3000/?url=https://api.example.com/data"
curl -H "X-NoCache: 1" "http://localhost:3000/?url=https://api.example.com/data"
curl -H "X-Status: 400" "http://localhost:3000/?url=https://api.example.com/bad"
curl "http://localhost:3000/purge/?url=https://api.example.com/data"