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Changes between Initial Version and Version 1 of Ticket #5617, comment 4

initial	v1
5	5	X-Sendfile sounds like a promising way to do it. Reading the NGINX doc, there is also support for it in lighthttpd and Apache [0], so it's good we're not prescribing too much here.
6	6
7		I'd just implement it as a completely separate feature orthogonal to private mode, though, and this should allow disabling it completely in dev.
	7	I'd just implement it as a completely separate feature orthogonal to private mode, though, and this should allow disabling it completely in dev: either send the file, or just add the X-Sendfile header if configured to do so.
8	8
9	9	The next bit of feature once that is implemented would be sharing specific content to unlogged users. I think X-Sendfile could be used in the same way, but we'd need to have some management of the shared URLs. At the moment, I just share the direct URLs to the files, but it's clearly a bug, not a feature (;