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.