[squid-users] Speed ​​limit from file size

Alex Rousskov rousskov at measurement-factory.com
Fri Jun 22 15:22:49 UTC 2018

On 06/21/2018 10:34 PM, Michael Pro wrote:

> I put all the necessary links in the database in step #2.
> I'm quite satisfied with entering this value (Content-Length) after step #3.
> How can I update the data for the link?

I am not sure I understand the question, but if you are asking how to
add response Content-Length info to some external database, then you
have a few options, including:

1. An external ACL used with http_reply_access
   (gets notified after receiving response headers)

2. An access.log daemon (gets notified after response delivery)

3. An access.log parser (gets notified after response delivery
   and log flushing)


> чт, 21 июн. 2018 г. в 22:52, Alex Rousskov <rousskov at measurement-factory.com>:
>> On 06/21/2018 12:08 PM, Michael Pro wrote:
>>> чт, 21 июн. 2018 г. в 19:09, Alex Rousskov <rousskov at measurement-factory.com>:
>>>> ...
>>>> You may prefer response delay pools, but they are only available in v5:
>>>> https://github.com/squid-cache/squid/commit/b27668e
>>> But to use this I understood that I need to use the store_id_program mechanism.
>> There is no relationship between response delay pools and Store IDs.
>>> A related question is how to pass the size (Content-Length) to store_id_extras.
>> You cannot pass response Content-Length header to the store_id_program
>> because that helper is consulted _before_ there is a response (step #2):
>>   1. parse client request X
>>   2. adapt X into request Y (ICAP, eCAP, url_rewriter, store_id, etc.)
>>   3. get the resource requested by Y
>>      (from the cache, peer, or origin server)
>> HTH,
>> Alex.
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