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preserve/README.md
Knut Ahlers 813b20970c
Add infos about storage provider
Signed-off-by: Knut Ahlers <knut@ahlers.me>
2021-02-23 14:17:22 +01:00

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# 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`
### Select Storage Provider
**Local files**
```console
preserve \
--listen=:3000 \
--storage-provider=local \
--storage-dir=/var/lib/preserve
```
**Google Cloud Storage**
```console
preserve \
--listen=:3000 \
--storage-provider=gcs \
--bucket-uri=gs://mybucket/prefix
```