Cache-Enabler Plugin How to check if cache is served with nginx?

Hi,

I am using htop to track process. What I usually see is mostly php running (CPU 3-10%), while nginx rarely run (CPU 0-0.7%) even though the cache size is a few GB already. So, does cache successfully serve to visitors? I though nginx should run most of the time.

I check the x-handler when page is load 2nd time is: wp

Also saw the timestamp at the end of html.

Is Centmin suppose to serve cache all through nginx? In my case, it seems php is still serve caches.

My visitors are all guests, no logged-in usera.

Thanks!

 

With:

Code:

curl -s "localhost/phpstatus?full"

Output is something like this:

Code:

pool:                 www
process manager:      ondemand
start time:           14/Oct/2020:08:38:07 +0000
start since:          17318
accepted conn:        67314
listen queue:         0
max listen queue:     75
listen queue len:     65535
idle processes:       0
active processes:     5
total processes:      5
max active processes: 105
max children reached: 1
slow requests:        0

************************
pid:                  12773
state:                Running
start time:           14/Oct/2020:13:26:45 +0000
start since:          0
requests:             1
request duration:     481
request method:       GET
request URI:          /phpstatus?full
content length:       0
user:                 -
script:               -
last request cpu:     0.00
last request memory:  0

************************
pid:                  12692
state:                Reading headers
start time:           14/Oct/2020:13:25:31 +0000
start since:          74
requests:             47
request duration:     8746867
request method:       -
request URI:          -
content length:       0
user:                 -
script:               -
last request cpu:     0.00
last request memory:  0

************************
pid:                  12619
state:                Running
start time:           14/Oct/2020:13:24:37 +0000
start since:          128
requests:             160
request duration:     137334
request method:       GET
request URI:          /index.php
content length:       0
user:                 -
script:               /home/nginx/domains/mydomain.com/public/index.php
last request cpu:     0.00
last request memory:  0

************************
pid:                  12638
state:                Reading headers
start time:           14/Oct/2020:13:24:53 +0000
start since:          112
requests:             118
request duration:     10027680
request method:       -
request URI:          -
content length:       0
user:                 -
script:               -
last request cpu:     0.00
last request memory:  0

************************
pid:                  10078
state:                Reading headers
start time:           14/Oct/2020:13:15:33 +0000
start since:          672
requests:             263
request duration:     406107
request method:       -
request URI:          -
content length:       0
user:                 -
script:               -
last request cpu:     0.00
last request memory:  0

With:

Code:

cat /home/nginx/domains/mydomain.com/log/access.log

I have lots of output, ie:

Code:

IP - - [14/Oct/2020:13:05:44 +0000] "GET /url.html HTTP/1.1" 200 21487 "-" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:75.0) Gecko/20100101 Firefox/75.0"

IP - - [14/Oct/2020:13:07:41 +0000] "GET /url.html HTTP/1.1" 200 22782 "-" "Scrapy/1.5.2 (+https://scrapy.org)"

IP - - [14/Oct/2020:13:07:50 +0000] "GET /url.html HTTP/1.1" 200 22642 "https://url.html" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.75 Safari/537.36"

From these two, how to know if the cache is served with nginx?

Thank you.