On 21/08/2014 11:56 p.m., Délsio Cabá wrote:
> Hi,
> 
> I have just update to the latest version, and the results are clear:
> cat  /var/log/squid/access.log  | awk '{print $4}' | sort | uniq -c | sort -rn
>  486561 TCP_MISS/200
>   89612 TCP_MISS/304
>   52123 TCP_MEM_HIT/200
>   40408 TCP_MISS/206
>   36267 TCP_MISS/302
>   20904 TCP_MISS/204
>   12246 TCP_IMS_HIT/304
>   12171 TCP_MISS/404
>   10533 TCP_MISS/301
>    9145 TCP_MISS/000
>    6004 TCP_OFFLINE_HIT/200
> ......
> 
> It's said that MISS/301, MISS/303 are not cacheable without special
> instructions.
> 
> What are those SPECIAL instructions?

http://tools.ietf.org/html/rfc7234#section-3

301 is a status code defined as cacheable by default.
303 depends on the other conditions.

Amos

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