Could you show 2 requests in a row to the same file? The logs you posted were requests to different files (...241.txt, ...326.tt, ...327.txt).
Since your origin seems like its doing the right thing, I'd stay away from the url_regex, and continue encouraging the correct behavior :) miles On Fri, Mar 29, 2019 at 1:28 PM John Garvin <[email protected]> wrote: > > Hi - > I'm seeing consistent TCP_MISSes for URIs that happen to follow a pattern. > > We distribute two kinds of .txt files. One is a serial number, say > serial.txt, with a sequential number incremented every 2-5 seconds. The > origin server, Apache http 2.2.x, has set the Cache-Control header like so: > < Cache-Control: max-age=5, stale-if-error=86400 > > The second type of txt file is a checksum. There is a checksum file for every > increment of the serial number. The Cache-Control header is > < Cache-Control: max-age=604800, stale-if-error=86400 > > I see consistent TCP_MISS messages in squid ascii logs for the cksum files. > > 1553890048.810 1 192.168.5.200 TCP_IMS_HIT/304 189 GET > http://192.168.5.80:80/ebl/srl.txt - NONE/- - > 1553890048.817 1 192.168.5.200 TCP_MISS/200 434 GET > http://192.168.5.80:80/hs1/sp_sender_rep.4/incremental/cksum/16824/16824241.txt > - DIRECT/192.168.5.80 text/plain > 1553890048.818 0 192.168.5.200 TCP_MISS/200 433 GET > http://192.168.5.80:80/hs1/sp_sender_rep.4/incremental/cksum/16824/16824326.txt > - DIRECT/192.168.5.80 text/plain > 1553890048.838 1 192.168.5.200 TCP_MISS/200 434 GET > http://192.168.5.80:80/hs1/comprehensive.4/incremental/cksum/16824/16824302.txt > - DIRECT/192.168.5.80 text/plain > 1553890048.839 1 192.168.5.200 TCP_MISS/200 433 GET > http://192.168.5.80:80/hs1/sp_sender_rep.4/incremental/cksum/16824/16824327.txt > - DIRECT/192.168.5.80 text/plain > > First, would anyone have any insight into why ATS 7.1.4 is not caching the > cksum files (\d+\.txt) but IS caching the serial placeholders? > The only difference I see is that the max-age value in the Cache-Control > header. > Any pointers to look towards would be appreciated. > > Second, would anyone like to take a stab at a url_regex to match the cksum > paths? I have > > url_regex==cksum/\d+/\d+\.txt ttl-in-cache=1d > > but I don't see any change in the logging. > > Thanks for any pointers. > > -- > John Garvin >
