BobSammers wrote: 
> I
> I note the word "expires" close to a date a month from now. This might
> explain (if this is being processed and overriding the 1 hour default
> that was mentioned) why the entries are not being removed. The number
> before the phrase "content-length" is probably pretty accurate for the
> size of the non-text part of the cached value.
> 
> I don't know where this is from; perhaps someone else can tell, but can
> it really be the result of multiple URL requests you have identified, as
> it's ~250K of binary data? Perhaps these entries (over 200 of them) were
> in my cache for some other reason.

I am use LMS cache so it behaviour is the same for all user of the
cache.  AFAICT when an entry expires it is not removed - just not used.
Purging clears out the cache but it doesn't occur for first time maybe
8h.  I did a test and reduced the time for a purge and afterwards -
cache size was still big but I didn't check contents.

The http header expires relates to the validity of of the page so for a
BBC program on iPlayer it will be about 28 days - I think the "expires"
is not used by Cache in the plugin just the URL matching and "expires"
is only  important if it is less than the cache's own expiry time.


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