On 12/10/17 04:57, EdouardM wrote:
Hi All,
question i have in mind about the refresh_pattern and multi-access...
let say i use a refresh_pattern about 1 month with an already cached object,
the question is:
- scenario 1: whatever the number of times the object will be requested,
once the delay (1 month) is expired the Squid will download a fresh copy
from internet ?
- scenario 2: each time the object is requested the ending-date will be
re-calculated for +1 month ?
in both scenarii, the remote object never changes...
from your point of view, what's the correct scenario here ?
Neither of those.
HTTP defines an algorithm for calculating object freshness.
<https://tools.ietf.org/html/rfc7234#section-4.2>
What refresh_pattern does is provide default values for the
section-4.2.2 parameters *if* the server does not deliver the values itself.
The most recent releases of Squid can also infer Date or Last-Modified
from message arrival times for the age calculation algorithm.
Amos
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