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List:       apache-httpd-users
Subject:    [users@httpd] Full cache locking requested
From:       Dirk Griffioen <dirk () unified-streaming ! com>
Date:       2017-10-19 4:36:06
Message-ID: DA140D3E-DA94-46D1-BBEE-16044823BC84 () unified-streaming ! com
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Hi,

In the Apache docs here: 

https://httpd.apache.org/docs/2.4/mod/mod_cache.html#thunderingherd 

it says: 'When a cached entry becomes stale'

It seems that this does not include the first call: the first uncached fragment is \
not protected by the cache lock, so all requests for the first fragment will hit the \
origin.

In the case of live video streaming players keep requesting the last (new) fragment \
as it is produced by an encoder.

Unfortunately, other caching tools (Nginx, Varnish) must be used as Apache itself \
cannot be used.

Is ‘full cache llocking' something that has been discussed or could be added?

Kind regards,

Dirk



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