Weird caching problem

Hey guys,

I have a weird caching problems for a couple of weeks now.

The wordress admin dashboard gets cached somehow. If I deactivate a plugin and refresh the page the plugin still shows as installed.

If I add an image to a post and hit publish, the post gets published but without the image. If I refresh the page then it shows up.

I have no idea what's going on... I've tried deactivating all caching plugins on a staging version and it's still the same.

Read on the WP forums that someone that the issue was with nginx conf:

Code:

add_header Pragma public;
       add_header Cache-Control "max-age=86400, public, must-revalidate, proxy-revalidate";

In a hail marry attempt to solve this thinking that it was a server problem I went to update nginx, centimmod and PHP version. Only to have the server now dead somehow since after the update the sites aren't live anymore lol.

Edit: ok servers now back up...I couldn't restart nginx without removing:
location ~ ^/\.user\.ini {
deny all;
}

from all the .conf files... no idea why but at least the nginx is working now.

Any ideas what might cause this strange caching problem?
Thanks

---

 

Hi,

I've installed it via option 22 and super cache, just checked the logs.

Prior to checking the logs I also tried commenting and uncommenting different cache settings in my domain.conf for example switched from super cache to cache enable, and viceversa.

Also tinkered with cloudflare, and ofc removing all cache plugins (autoptimize + gzip, super cache, statically)

Here's the headers for when I'm deactivating a plugin... on the screen it still shows active, only after refreshing page a couple of times it will show inactive...

Code:

Request URL: https://domainname.com/wp-admin/plugins.php?action=deactivate&plugin=antispam-bee%2Fantispam_bee.php&plugin_status=all&paged=1&s&_wpnonce=fa6432d219
Request Method: GET
Status Code: 302
Remote Address:
Referrer Policy: strict-origin-when-cross-origin
alt-svc: h3-27=":443"; ma=86400, h3-28=":443"; ma=86400, h3-29=":443"; ma=86400
cache-control: no-cache, must-revalidate, max-age=0
cf-cache-status: DYNAMIC
cf-ray: 6322c79b5a3-CDG
cf-request-id: 08e9000000001
content-type: text/html; charset=UTF-8
date: Fri, 19 Mar 2021 01:03:14 GMT
expect-ct: max-age=604800, report-uri="https://report-uri.cloudflare.com/cdn-cgi/beacon/expect-ct"
expires: Wed, 11 Jan 1984 05:00:00 GMT
location: https://domainname.com/wp-admin/plugins.php?deactivate=true&plugin_status=all&paged=1&s=
nel: {"report_to":"cf-nel","max_age":604800}
referrer-policy: strict-origin-when-cross-origin
report-to: {"max_age":604800,"group":"cf-nel","endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report?s=AXg7TvKXQL05Q%2B9T"}]}
server: cloudflare
x-content-type-options: nosniff
X-DNS-Prefetch-Control: off
x-frame-options: SAMEORIGIN
x-powered-by: centminmod
x-redirect-by: WordPress
x-xss-protection: 1; mode=block
:authority: domainname.com
:method: GET
:path: /wp-admin/plugins.php?action=deactivate&plugin=antispam-bee%2Fantispam_bee.php&plugin_status=all&paged=1&s&_wpnonce=fa6432d219
:scheme: https
accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9
accept-encoding: gzip, deflate, br
accept-language: en-US,en;q=0.9
authorization: Basic x31223Random312jlk==
cookie: autoptimize_feed=1; wordpress_sec_55a1wnOH7OV0dwc9PiOkIvWaAzZlv2Hu%7Cc8553f939907ef5d6d3208369cd7d518af; stly_tab=general; wordpress_test_cookie=WP+Cookie+check; _ga=GA1.2.112256.159693; cookieconsent_status=dismiss; prli_visitor=5f12542b; printfriendly-font-class=pf-12; __cfduid=d8a525; prli_click_3=semrush; cf_clearance=dbb9e550f2405965e9-1615247986-0-150; _gid=GA1.2.18309263.1615294509; _omappvp=nDtchh0lFF2novgK3rokuIOAQjOk; mo_success_NPOiydQVlZ=true; prli_click_18=bingads; prli_click_1=bluehost; prli_click_11=siteground; prli_click_27=sociallyviral; prli_click_26=adsense-theme; prli_click_41=ahead; wp-settings-1=imgsize%3Dfull%26libraryContent%3Dbrowse%26align%3Dcenter%26hidetb%3D1%26advImgDetails%3Dshow%26editor%3Dhtml%26urlbutton%3Dnone%26posts_list_mode%3Dlist%26post_dfw%3Doff; wp-settings-time-1=1616064453; wordpress_logged_in_416=S%7C1167d4750845; wfwaf-authcookie-e60edf1e=1%7Cadministrator%c878e9a0
referer: https://domainname.com/wp-admin/plugins.php?plugin_status=all&paged=1&s
sec-ch-ua: "Google Chrome";v="89", "Chromium";v="89", ";Not A Brand";v="99"
sec-ch-ua-mobile: ?0
sec-fetch-dest: document
sec-fetch-mode: navigate
sec-fetch-site: same-origin
sec-fetch-user: ?1
upgrade-insecure-requests: 1
user-agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/89.0.4389.90 Safari/537.36
action: deactivate
plugin: antispam-bee/antispam_bee.php
plugin_status: all
paged: 1
s:
_wpnonce: fa6432d2

I'm off to bed now since it's 3AM and haven't solved anything so far haha.

Thanks,
Stephen

 

I think I had the problem for a while it's just the past few weeks I've been more active on working on the site (kinda forgot about it for many months).

If I remember correctly I think I edited the conf files to make SSL or HTTP to > https work. Not sure though. Oh and yesterday to remove the user.ini to be able to restart nginx.

.conf code:

Code:

# Centmin Mod Getting Started Guide
# must read http://centminmod.com/getstarted.html

# redirect from non-www to www
# uncomment, save file and restart Nginx to enable
# if unsure use return 302 before using return 301
#server {
#            listen   80;
#            server_name domainname.com;
#            return 301 $scheme://www.domainname.com$request_uri;
#       }

server {
 
  server_name domainname.com www.domainname.com;

# ngx_pagespeed & ngx_pagespeed handler
#include /usr/local/nginx/conf/pagespeed.conf;
#include /usr/local/nginx/conf/pagespeedhandler.conf;
#include /usr/local/nginx/conf/pagespeedstatslog.conf;

  #add_header X-Frame-Options SAMEORIGIN;
  add_header X-Xss-Protection "1; mode=block" always;
  add_header X-Content-Type-Options "nosniff" always;
  #add_header Referrer-Policy "strict-origin-when-cross-origin";
  #add_header Feature-Policy "accelerometer 'none'; camera 'none'; geolocation 'none'; gyroscope 'none'; magnetometer 'none'; microphone 'none'; payment 'none'; usb 'none'";

  # limit_conn limit_per_ip 16;
  # ssi  on;

  access_log /home/nginx/domains/domainname.com/log/access.log combined buffer=256k flush=5m;
  error_log /home/nginx/domains/domainname.com/log/error.log;

 include /usr/local/nginx/conf/autoprotect/domainname.com/autoprotect-domainname.com.conf;
  root /home/nginx/domains/domainname.com/public;
  # uncomment cloudflare.conf include if using cloudflare for
  # server and/or vhost site
  include /usr/local/nginx/conf/cloudflare.conf;
  include /usr/local/nginx/conf/503include-main.conf;

  #include /usr/local/nginx/conf/wpincludes/domainname.com/wpcacheenabler_domainname.com.conf;
  include /usr/local/nginx/conf/wpincludes/domainname.com/wpsupercache_domainname.com.conf;
  # https://community.centminmod.com/posts/18828/
  #include /usr/local/nginx/conf/wpincludes/domainname.com/rediscache_domainname.com.conf;

  location / {
  include /usr/local/nginx/conf/503include-only.conf;
 

  # Enables directory listings when index file not found
  #autoindex  on;

  # for wordpress super cache plugin
  try_files /wp-content/cache/supercache/$http_host/$cache_uri/index.html $uri $uri/ /index.php?q=$uri&$args;

  # for wp cache enabler plugin
  #try_files $cache_enabler_uri $uri $uri/ $custom_subdir/index.php?$args;

  # Wordpress Permalinks
  #try_files $uri $uri/ /index.php?q=$uri&$args;

  # Nginx level redis Wordpress
  # https://community.centminmod.com/posts/18828/
  #try_files $uri $uri/ /index.php?$args;

  }

location ~* /(wp-login\.php) {
    limit_req zone=xwplogin burst=1 nodelay;
    #limit_conn xwpconlimit 30;
    auth_basic "Private";
    auth_basic_user_file /home/nginx/domains/domainname.com/htpasswd_wplogin;  
    include /usr/local/nginx/conf/php-wpsc.conf;
    # https://community.centminmod.com/posts/18828/
    #include /usr/local/nginx/conf/php-rediscache.conf;
}

location ~* /(xmlrpc\.php) {
    limit_req zone=xwprpc burst=45 nodelay;
    #limit_conn xwpconlimit 30;
    include /usr/local/nginx/conf/php-wpsc.conf;
    # https://community.centminmod.com/posts/18828/
    #include /usr/local/nginx/conf/php-rediscache.conf;
}

location ~* /wp-admin/(load-scripts\.php) {
    limit_req zone=xwprpc burst=5 nodelay;
    #limit_conn xwpconlimit 30;
    include /usr/local/nginx/conf/php-wpsc.conf;
    # https://community.centminmod.com/posts/18828/
    #include /usr/local/nginx/conf/php-rediscache.conf;
}

location ~* /wp-admin/(load-styles\.php) {
    limit_req zone=xwprpc burst=5 nodelay;
    #limit_conn xwpconlimit 30;
    include /usr/local/nginx/conf/php-wpsc.conf;
    # https://community.centminmod.com/posts/18828/
    #include /usr/local/nginx/conf/php-rediscache.conf;
}

  include /usr/local/nginx/conf/wpincludes/domainname.com/wpsecure_domainname.com.conf;
  include /usr/local/nginx/conf/php-wpsc.conf;
 
  # https://community.centminmod.com/posts/18828/
  #include /usr/local/nginx/conf/php-rediscache.conf;
  include /usr/local/nginx/conf/pre-staticfiles-local-domainname.com.conf;
  include /usr/local/nginx/conf/pre-staticfiles-global.conf;
  include /usr/local/nginx/conf/staticfiles.conf;
  include /usr/local/nginx/conf/drop.conf;
  #include /usr/local/nginx/conf/errorpage.conf;
  include /usr/local/nginx/conf/vts_server.conf;
}

.SSL.conf code:

Code:

# Centmin Mod Getting Started Guide
# must read http://centminmod.com/getstarted.html
# For HTTP/2 SSL Setup
# read http://centminmod.com/nginx_configure_https_ssl_spdy.html

# redirect from www to non-www  forced SSL
# uncomment, save file and restart Nginx to enable
# if unsure use return 302 before using return 301
# server {
#   server_name domainname.com www.domainname.com;
#    return 302 https://$server_name$request_uri;
# }

server {
  listen 443 ssl http2 reuseport;
  server_name domainname.com www.domainname.com;

  ssl_dhparam /usr/local/nginx/conf/ssl/domainname.com/dhparam.pem;
  ssl_certificate      /usr/local/nginx/conf/ssl/domainname.com/domainname.com.crt;
  ssl_certificate_key  /usr/local/nginx/conf/ssl/domainname.com/domainname.com.key;
  include /usr/local/nginx/conf/ssl_include.conf;

  # cloudflare authenticated origin pull cert community.centminmod.com/threads/13847/
  #ssl_client_certificate /usr/local/nginx/conf/ssl/cloudflare/domainname.com/origin.crt;
  #ssl_verify_client on;
  http2_max_field_size 16k;
  http2_max_header_size 32k;
  http2_max_requests 50000;
  # mozilla recommended
  ssl_ciphers ECDHE-EDITED;
  ssl_prefer_server_ciphers   on;
  #add_header Alternate-Protocol  443:npn-spdy/3;

  # before enabling HSTS line below read centminmod.com/nginx_domain_dns_setup.html#hsts
  #add_header Strict-Transport-Security "max-age=31536000; includeSubdomains;";
  #add_header X-Frame-Options SAMEORIGIN;
  add_header X-Xss-Protection "1; mode=block" always;
  add_header X-Content-Type-Options "nosniff" always;
  #add_header Referrer-Policy "strict-origin-when-cross-origin";
  #add_header Feature-Policy "accelerometer 'none'; camera 'none'; geolocation 'none'; gyroscope 'none'; magnetometer 'none'; microphone 'none'; payment 'none'; usb 'none'";
  #spdy_headers_comp 5;
  ssl_buffer_size 1369;
  ssl_session_tickets on;
 
  # enable ocsp stapling
  #resolver 8.8.8.8 8.8.4.4 1.1.1.1 1.0.0.1 valid=10m;
  #resolver_timeout 10s;
  #ssl_stapling on;
  #ssl_stapling_verify on;
  #ssl_trusted_certificate /usr/local/nginx/conf/ssl/domainname.com/domainname.com-trusted.crt;

# ngx_pagespeed & ngx_pagespeed handler
#include /usr/local/nginx/conf/pagespeed.conf;
#include /usr/local/nginx/conf/pagespeedhandler.conf;
#include /usr/local/nginx/conf/pagespeedstatslog.conf;

  # limit_conn limit_per_ip 16;
  # ssi  on;

  access_log /home/nginx/domains/domainname.com/log/access.log combined buffer=256k flush=5m;
  error_log /home/nginx/domains/domainname.com/log/error.log;

  include /usr/local/nginx/conf/autoprotect/domainname.com/autoprotect-domainname.com.conf;
  root /home/nginx/domains/domainname.com/public;
  # uncomment cloudflare.conf include if using cloudflare for
  # server and/or vhost site
  #include /usr/local/nginx/conf/cloudflare.conf;
  include /usr/local/nginx/conf/503include-main.conf;

  #include /usr/local/nginx/conf/wpincludes/domainname.com/wpcacheenabler_domainname.com.conf;
  include /usr/local/nginx/conf/wpincludes/domainname.com/wpsupercache_domainname.com.conf;
  # https://community.centminmod.com/posts/18828/
  #include /usr/local/nginx/conf/wpincludes/domainname.com/rediscache_domainname.com.conf;

  location / {
  include /usr/local/nginx/conf/503include-only.conf;
 

  # Enables directory listings when index file not found
  #autoindex  on;

  # for wordpress super cache plugin
  try_files /wp-content/cache/supercache/$http_host/$cache_uri/index.html $uri $uri/ /index.php?q=$uri&$args;

  # for wp cache enabler plugin
  #try_files $cache_enabler_uri $uri $uri/ $custom_subdir/index.php?$args;

  # Wordpress Permalinks
  #try_files $uri $uri/ /index.php?q=$uri&$args;

  # Nginx level redis Wordpress
  # https://community.centminmod.com/posts/18828/
  #try_files $uri $uri/ /index.php?$args;

  }

location ~* /(wp-login\.php) {
    limit_req zone=xwplogin burst=1 nodelay;
    #limit_conn xwpconlimit 30;
    auth_basic "Private";
    auth_basic_user_file /home/nginx/domains/domainname.com/htpasswd_wplogin;  
    include /usr/local/nginx/conf/php-wpsc.conf;
   
    # https://community.centminmod.com/posts/18828/
    #include /usr/local/nginx/conf/php-rediscache.conf;
}

location ~* /(xmlrpc\.php) {
    limit_req zone=xwprpc burst=45 nodelay;
    #limit_conn xwpconlimit 30;
    include /usr/local/nginx/conf/php-wpsc.conf;
   
    # https://community.centminmod.com/posts/18828/
    #include /usr/local/nginx/conf/php-rediscache.conf;
}

location ~* /wp-admin/(load-scripts\.php) {
    limit_req zone=xwprpc burst=5 nodelay;
    #limit_conn xwpconlimit 30;
    include /usr/local/nginx/conf/php-wpsc.conf;
   
    # https://community.centminmod.com/posts/18828/
    #include /usr/local/nginx/conf/php-rediscache.conf;
}

location ~* /wp-admin/(load-styles\.php) {
    limit_req zone=xwprpc burst=5 nodelay;
    #limit_conn xwpconlimit 30;
    include /usr/local/nginx/conf/php-wpsc.conf;
   
    # https://community.centminmod.com/posts/18828/
    #include /usr/local/nginx/conf/php-rediscache.conf;
}

  include /usr/local/nginx/conf/wpincludes/domainname.com/wpsecure_domainname.com.conf;
  include /usr/local/nginx/conf/php-wpsc.conf;
 
  # https://community.centminmod.com/posts/18828/
  #include /usr/local/nginx/conf/php-rediscache.conf;
  include /usr/local/nginx/conf/pre-staticfiles-local-domainname.com.conf;
  include /usr/local/nginx/conf/pre-staticfiles-global.conf;
  include /usr/local/nginx/conf/staticfiles.conf;
  include /usr/local/nginx/conf/drop.conf;
  #include /usr/local/nginx/conf/errorpage.conf;
  include /usr/local/nginx/conf/vts_server.conf;
}

Code:

curl -I https://domain.com
HTTP/1.1 200 OK
Date: Fri, 19 Mar 2021 01:43:37 GMT
Content-Type: text/html; charset=UTF-8
Connection: keep-alive
Set-Cookie: __cfduid=dd6ff87548354ed149665b0dd414d06c41616118216; expires=Sun, 18-Apr-21 01:43:36 GMT; path=/; domain=.domain.com; HttpOnly; SameSite=Lax; Secure
Vary: Accept-Encoding
Link: <https://domain.com/wp-json/>; rel="https://api.w.org/"
Link: <https://domain.com/wp-json/wp/v2/pages/8>; rel="alternate"; type="application/json"
Link: <https://domain.com/>; rel=shortlink
X-Powered-By: centminmod
X-Xss-Protection: 1; mode=block
X-Content-Type-Options: nosniff
CF-Cache-Status: DYNAMIC
cf-request-id: 08e9c00e330000f9f773b9c000000001
Expect-CT: max-age=604800, report-uri="https://report-uri.cloudflare.com/cdn-cgi/beacon/expect-ct"
Report-To: {"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report?s=vNFyH2JCV0f2CDi944hEKs9JW1UPwLlVu%2FtM288%2BTQThwHnklY9m%2B98vrWkohHtemtX%2FI%2FzgkM6enotCNwNAnx9KpFMKz6uuj64IxUZlPA%3D%3D"}],"group":"cf-nel","max_age":604800}
NEL: {"max_age":604800,"report_to":"cf-nel"}
Server: cloudflare
CF-RAY: 632302c38f86f9f7-IAD
alt-svc: h3-27=":443"; ma=86400, h3-28=":443"; ma=86400, h3-29=":443"; ma=86400

Code:

curl -I https://www.domain.com


HTTP/1.1 301 Moved Permanently
Date: Fri, 19 Mar 2021 01:44:07 GMT
Content-Type: text/html; charset=UTF-8
Connection: keep-alive
Set-Cookie: __cfduid=df98c29a9d01268109ade4766e51046ed1616118246; expires=Sun, 18-Apr-21 01:44:06 GMT; path=/; domain=.domain.com; HttpOnly; SameSite=Lax; Secure
X-Redirect-By: WordPress
Location: https://domain.com/
X-Powered-By: centminmod
X-Xss-Protection: 1; mode=block
X-Content-Type-Options: nosniff
CF-Cache-Status: DYNAMIC
cf-request-id: 08e9c0838f000026fb6d181000000001
Expect-CT: max-age=604800, report-uri="https://report-uri.cloudflare.com/cdn-cgi/beacon/expect-ct"
Report-To: {"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report?s=q4kArpNVUI2tkQqzsVfAsQYNj%2FNuCVjYAEKwSm3Bpu4d26Yahs5ibvHqXR5G9kYycBq1oWrl%2BEoyylWesa%2FuJLzD%2FN%2F02hqStsNMZ33cbzsNKQc%3D"}],"group":"cf-nel","max_age":604800}
NEL: {"report_to":"cf-nel","max_age":604800}
Server: cloudflare
CF-RAY: 6323037f491626fb-MSP
alt-svc: h3-27=":443"; ma=86400, h3-28=":443"; ma=86400, h3-29=":443"; ma=86400

Code:

curl -I http://domain.com

HTTP/1.1 301 Moved Permanently
Date: Fri, 19 Mar 2021 01:44:39 GMT
Connection: keep-alive
Cache-Control: max-age=3600
Expires: Fri, 19 Mar 2021 02:44:39 GMT
Location: https://domain.com/
cf-request-id: 08e9c1052c0000384eb70c6000000001
Report-To: {"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report?s=I9sxtngOx%2FbahyxuxMxDbglAe1HrUP11a%2FoPGI758FOolFz0ntKr7y9fYm5MwwSWXMuXRSnVDqkTOiT9viurM6I6%2FdH4SkBhLNCl9urLTA%3D%3D"}],"max_age":604800,"group":"cf-nel"}
NEL: {"max_age":604800,"report_to":"cf-nel"}
Server: cloudflare
CF-RAY: 6323044eafd5384e-IAD
alt-svc: h3-27=":443"; ma=86400, h3-28=":443"; ma=86400, h3-29=":443"; ma=86400

Code:

curl -I http://www.domain.com

HTTP/1.1 301 Moved Permanently
Date: Fri, 19 Mar 2021 01:45:15 GMT
Connection: keep-alive
Cache-Control: max-age=3600
Expires: Fri, 19 Mar 2021 02:45:15 GMT
Location: https://www.domain.com/
cf-request-id: 08e9c1911e00000323151f3000000001
Report-To: {"group":"cf-nel","endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report?s=yfCZgba2PbebVXj65cw5O%2FGdRtQC4yKYu66H%2BMTYsUVA%2F7sg7ef5ycnkmscV9dr2sUBinokyoX%2BdQl7rxMkJ%2FZGStVXsWuFKIRxe%2FASNrJdq%2FoA%3D"}],"max_age":604800}
NEL: {"max_age":604800,"report_to":"cf-nel"}
Server: cloudflare
CF-RAY: 6323052e99760323-IAD
alt-svc: h3-27=":443"; ma=86400, h3-28=":443"; ma=86400, h3-29=":443"; ma=86400

Thanks,
Stephen