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README: Clarify why serving file requests from the app is bad

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Mia Herkt 2022-11-20 16:54:46 +01:00
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@ -30,8 +30,10 @@ where ``/up`` is whatever you’ve configured as ``FHOST_STORAGE_PATH``.
For all other servers, set ``FHOST_USE_X_ACCEL_REDIRECT`` to ``False`` and
``USE_X_SENDFILE`` to ``True``, assuming your server supports this.
Otherwise, Flask will serve the file with chunked encoding, which sucks and
should be avoided at all costs.
Otherwise, Flask will serve the file with chunked encoding, which has several
downsides, one of them being that range requests will not work. This is a
problem for example when streaming media files: It won’t be possible to seek,
and some ISOBMFF (MP4) files will not play at all.
To make files expire, simply create a cronjob that runs ``cleanup.py`` every
now and then.