Luzifer / preserve

preserve is a little HTTP server to preserve the presence of URLs.

Ever relied on an HTTP resource to be available and it vanished? Happened too often to me so I wrote a little tool to prevent URLs from vanishing: preserve.

Usage

After you've started preserve it will by default listen on port 3000 and you can start using it by prefixing the URL of the resource:

Lets say you want to ensure the image https://example.com/image.png does not vanish:

• http://localhost:3000/https://example.com/image.png will fetch the resource once and then deliver it from the local cache
• http://localhost:3000/latest/https://example.com/image.png will fetch the resource with every request until it gets unavailable and then serve it from local cache

This also works with parameters:

http://localhost:3000/https://pbs.twimg.com/media/somemediaid?format=jpg&name=4096x4096

If you do have some service (like Discord) screwing up these URLs you can apply base64 URL-Encoding to them (do NOT omit the padding):

http://localhost:3000/b64:aHR0cHM6Ly9wYnMudHdpbWcuY29tL21lZGlhL3NvbWVtZWRpYWlkP2Zvcm1hdD1qcGcmbmFtZT00MDk2eDQwOTY=

Select Storage Provider

Local files

preserve \
  --listen=:3000 \
  --storage-provider=local \
  --storage-dir=/var/lib/preserve

Google Cloud Storage

preserve \
  --listen=:3000 \
  --storage-provider=gcs \
  --bucket-uri=gs://mybucket/prefix