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why is proxy_cache_lock not working?

November 17, 2017 01:49AM
I am running nginx server in front of httpd server.

nginx -V
nginx version: nginx/1.10.2
built by gcc 4.4.7 20120313 (Red Hat 4.4.7-17) (GCC)
built with OpenSSL 1.0.1e-fips 11 Feb 2013
TLS SNI support enabled
configure arguments: --prefix=/usr/share/nginx --sbin-path=/usr/sbin/nginx --modules-path=/usr/lib64/nginx/modules --conf-path=/etc/nginx/nginx.conf --error-log-path=/var/log/nginx/error.log --http-log-path=/var/log/nginx/access.log --http-client-body-temp-path=/var/lib/nginx/tmp/client_body --http-proxy-temp-path=/var/lib/nginx/tmp/proxy --http-fastcgi-temp-path=/var/lib/nginx/tmp/fastcgi --http-uwsgi-temp-path=/var/lib/nginx/tmp/uwsgi --http-scgi-temp-path=/var/lib/nginx/tmp/scgi --pid-path=/var/run/nginx.pid --lock-path=/var/lock/subsys/nginx --user=nginx --group=nginx --with-file-aio --with-ipv6 --with-http_ssl_module --with-http_v2_module --with-http_realip_module --with-http_addition_module --with-http_xslt_module=dynamic --with-http_image_filter_module=dynamic --with-http_geoip_module=dynamic --with-http_sub_module --with-http_dav_module --with-http_flv_module --with-http_mp4_module --with-http_gunzip_module --with-http_gzip_static_module --with-http_random_index_module --with-http_secure_link_module --with-http_degradation_module --with-http_slice_module --with-http_stub_status_module --with-http_perl_module=dynamic --with-mail=dynamic --with-mail_ssl_module --with-pcre --with-pcre-jit --with-stream=dynamic --with-stream_ssl_module --with-debug --with-cc-opt='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic' --with-ld-opt=' -Wl,-E'



Below are the parts of the nginx configuration


proxy_cache_path /tmp/nginx/cache
levels=1:2
keys_zone=my_cache:1m
max_size=10g
inactive=30s
use_temp_path=off;

location ~*\.(ts)$ {

##### Proxy cache settings

proxy_http_version 1.1;
proxy_cache my_cache;
proxy_cache_revalidate on;
proxy_cache_key $uri;
proxy_cache_use_stale updating;
proxy_cache_valid any 1m;
proxy_cache_min_uses 1;
proxy_cache_lock on;
proxy_cache_lock_age 5s;
proxy_cache_lock_timeout 1h;
proxy_ignore_headers X-Accel-Expires Expires Cache-Control;
proxy_ignore_headers Set-Cookie;


proxy_pass http://192.168.2.225:8080;
}


Even with proxy_cache_lock on, the original server is getting hit on every miss request per the logs below.

nginx access logs:

HOST82 - MISS [17/Nov/2017:00:22:03 -0600] "GET profile1/76861/HD_profile1_00001.ts HTTP/1.1" 206 262144 "-" "Roku/DVP-8.0 (298.00E04108A)" "-"
HOST225 - MISS [17/Nov/2017:00:22:04 -0600] "GET profile1/76861/HD_profile1_00001.ts HTTP/1.1" 206 262144 "-" "Roku/DVP-8.0 (508.00E03138A)" "-"
HOST187 - MISS [17/Nov/2017:00:22:05 -0600] "GET profile1/76861/HD_profile1_00001.ts HTTP/1.1" 200 4696992 "-" "Roku/DVP-7.70 (047.70E04135A)" "-"
HOST125 - MISS [17/Nov/2017:00:22:06 -0600] "GET profile1/76861/HD_profile1_00001.ts HTTP/1.1" 206 262144 "-" "Roku/DVP-8.0 (248.00E04108A)" "-"
HOST80 - MISS [17/Nov/2017:00:22:08 -0600] "GET profile1/76861/HD_profile1_00001.ts HTTP/1.1" 206 262144 "-" "Roku/DVP-8.0 (288.00E04108A)" "-"

HOST80 - MISS [17/Nov/2017:00:22:15 -0600] "GET profile1/76861/HD_profile1_00002.ts HTTP/1.1" 206 262144 "-" "Roku/DVP-8.0 (288.00E04108A)" "-"
HOST82 - MISS [17/Nov/2017:00:22:16 -0600] "GET profile1/76861/HD_profile1_00002.ts HTTP/1.1" 206 262144 "-" "Roku/DVP-8.0 (298.00E04108A)" "-"
HOST225 - MISS [17/Nov/2017:00:22:18 -0600] "GET profile1/76861/HD_profile1_00002.ts HTTP/1.1" 206 262144 "-" "Roku/DVP-8.0 (508.00E03138A)" "-"
HOST187 - MISS [17/Nov/2017:00:22:19 -0600] "GET profile1/76861/HD_profile1_00002.ts HTTP/1.1" 200 4527604 "-" "Roku/DVP-7.70 (047.70E04135A)" "-"


Origin httpd logs

192.168.2.226 - - [17/Nov/2017:06:29:40 +0000] "GET profile1/76861/HD_profile1_00001.ts HTTP/1.1" 200 4696992
192.168.2.226 - - [17/Nov/2017:06:29:41 +0000] "GET profile1/76861/HD_profile1_00001.ts HTTP/1.1" 200 4696992
192.168.2.226 - - [17/Nov/2017:06:29:42 +0000] "GET profile1/76861/HD_profile1_00001.ts HTTP/1.1" 200 4696992
192.168.2.226 - - [17/Nov/2017:06:29:43 +0000] "GET profile1/76861/HD_profile1_00001.ts HTTP/1.1" 200 4696992
192.168.2.226 - - [17/Nov/2017:06:29:45 +0000] "GET profile1/76861/HD_profile1_00001.ts HTTP/1.1" 200 4696992

192.168.2.226 - - [17/Nov/2017:06:29:52 +0000] "GET profile1/76861/HD_profile1_00002.ts HTTP/1.1" 200 4527604
192.168.2.226 - - [17/Nov/2017:06:29:53 +0000] "GET profile1/76861/HD_profile1_00002.ts HTTP/1.1" 200 4527604
192.168.2.226 - - [17/Nov/2017:06:29:55 +0000] "GET profile1/76861/HD_profile1_00002.ts HTTP/1.1" 200 4527604
192.168.2.226 - - [17/Nov/2017:06:29:56 +0000] "GET profile1/76861/HD_profile1_00002.ts HTTP/1.1" 200 4527604
192.168.2.226 - - [17/Nov/2017:06:29:56 +0000] "GET profile1/76861/HD_profile1_00002.ts HTTP/1.1" 200 4527604

192.168.2.226 - - [17/Nov/2017:06:30:03 +0000] "GET profile1/76861/HD_profile1_00003.ts HTTP/1.1" 200 4866004
192.168.2.226 - - [17/Nov/2017:06:30:05 +0000] "GET profile1/76861/HD_profile1_00003.ts HTTP/1.1" 200 4866004
192.168.2.226 - - [17/Nov/2017:06:30:05 +0000] "GET profile1/76861/HD_profile1_00003.ts HTTP/1.1" 200 4866004
192.168.2.226 - - [17/Nov/2017:06:30:07 +0000] "GET profile1/76861/HD_profile1_00003.ts HTTP/1.1" 200 4866004
192.168.2.226 - - [17/Nov/2017:06:30:08 +0000] "GET profile1/76861/HD_profile1_00003.ts HTTP/1.1" 200 4866004


What am I missing?
Subject Author Posted

why is proxy_cache_lock not working?

edanic0017 November 17, 2017 01:49AM

Re: why is proxy_cache_lock not working?

Maxim Dounin November 17, 2017 09:56AM

Re: why is proxy_cache_lock not working?

edanic0017 November 18, 2017 04:33AM



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