[Faaak]

How about avoiding redundancies ? Are same CSS files cached twice or referenced by their hash ?

The page URI is a bit obscure though. I think a tresoro.io/example.tld/page/foobar/timestamp would look good.

What about big media content and/or small differences between them ?

[agamble]

Great question.

Currently there is no global redundancy checking, only locally within the same page. So two CSS files which are the same from multiple archives are both kept. While this might not be ideal in terms of scaling to infinity, each archive + its dependencies are right now limited in size to 25MB, which should help keep costs under control until this is monetised. :)

[WhiteOwlLion]

What file system are you using? Couldn't a deduplicating file system handle redundancy for you?