[Koha-devel] Amazon Cover Images

[Frédéric Demians]

> I think caching is something that Amazon (and probably others) rules
> out explicitly. The point of that service is to gain hits, sales and
> user info, not providing a nice source to harvest for your own
> server.

It's not about caching thumbnails themselves, but URLs to them. There is
no interest in caching images when Amazon or Google have CDN designed to
deliver their content in a breeze. So the number of hits to the images
stay the same for the providers, originating from browsers, whereas the
number of requests to AWS or Google Book services decrease, since their
result is cached. And this cache may be cleared periodically, or checked
since providers can decide to move their thumbnails URLs.

I described a solution for bug 7187:

http://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=7187

And indeed, I just reinvented the wheel:

http://wiki.koha-community.org/wiki/Covers_from_multiple_sources_RFC