NanoG5

Beside I can feel the pageload indeed faster, is there any method to verify whether it works or not?
Thanks!

Try disabling Object Cache.
On my installation, if I enable Object Cache, my server will try to connect to Google IP (?) on port 80 (www), and my blog feels so slow. I can confirm / reproduce it.
I don’t know maybe because something to do with my other plugin.

Hi Frederick,

I believe the first Cache-Control is from the Page Cache (Cache home page, Cache requests only.., Don’t cache page.. , are checked).

If page cache expired (older than 3600 secs) then the header would be like this:

curl -I www.lifebit.me
HTTP/1.1 200 OK
Server: nginx
Date: Mon, 27 Aug 2012 15:18:25 GMT
Content-Type: text/html
Content-Length: 71674
Last-Modified: Mon, 27 Aug 2012 13:31:34 GMT
Connection: keep-alive
Vary: Accept-Encoding
Expires: Mon, 27 Aug 2012 14:31:34 GMT
Cache-Control: no-cache
Vary: Accept-Encoding, Cookie
Pragma: public
Cache-Control: public, must-revalidate, proxy-revalidate
Accept-Ranges: bytes

If page cache is not expired yet, the http header would be like this:

curl -I www.lifebit.me
HTTP/1.1 200 OK
Server: nginx
Date: Mon, 27 Aug 2012 15:22:37 GMT
Content-Type: text/html
Content-Length: 71762
Last-Modified: Mon, 27 Aug 2012 15:22:31 GMT
Connection: keep-alive
Vary: Accept-Encoding
Expires: Mon, 27 Aug 2012 16:22:31 GMT
Cache-Control: max-age=3594
Vary: Accept-Encoding, Cookie
Pragma: public
Cache-Control: public, must-revalidate, proxy-revalidate
Accept-Ranges: bytes

If there is no page cache:

curl -I www.lifebit.me
HTTP/1.1 200 OK
Server: nginx
Date: Mon, 27 Aug 2012 15:29:43 GMT
Content-Type: text/html; charset=UTF-8
Connection: keep-alive
Vary: Accept-Encoding
X-Pingback: https://www.lifebit.me/xmlrpc.php
Last-Modified: Mon, 27 Aug 2012 15:29:43 GMT
Vary: Cookie
Expires: Mon, 27 Aug 2012 16:29:43 GMT
Pragma: public
Cache-Control: public, must-revalidate, proxy-revalidate

If I disable Set cache control header:

curl -I www.lifebit.me
HTTP/1.1 200 OK
Server: nginx
Date: Mon, 27 Aug 2012 15:25:53 GMT
Content-Type: text/html; charset=UTF-8
Connection: keep-alive
Vary: Accept-Encoding
X-Pingback: https://www.lifebit.me/xmlrpc.php
Last-Modified: Mon, 27 Aug 2012 15:25:53 GMT
Vary: Cookie
Expires: Mon, 27 Aug 2012 16:25:53 GMT

I’m using W3TC generated nginx.conf in my web root, and I don’t have any specific nginx conf to handle static files or html.

# BEGIN W3TC Page Cache cache
location ~ /wp-content/w3tc/pgcache.*html$ {
    expires modified 3600s;
    add_header Vary "Accept-Encoding, Cookie";
    add_header Pragma "public";
    add_header Cache-Control "public, must-revalidate, proxy-revalidate";
}
location ~ /wp-content/w3tc/pgcache.*gzip$ {
    gzip off;
    types {}
    default_type text/html;
    expires modified 3600s;
    add_header Vary "Accept-Encoding, Cookie";
    add_header Pragma "public";
    add_header Cache-Control "public, must-revalidate, proxy-revalidate";
    add_header Content-Encoding gzip;
}
# END W3TC Page Cache cache
# BEGIN W3TC Browser Cache
gzip on;
gzip_types text/css application/x-javascript text/x-component text/richtext image/svg+xml text/plain text/xsd text/xsl text/xml image/x-icon;
location ~ \.(css|js|htc)$ {
    expires 31536000s;
    add_header Pragma "public";
    add_header Cache-Control "public, must-revalidate, proxy-revalidate";
}
location ~ \.(html|htm|rtf|rtx|svg|svgz|txt|xsd|xsl|xml)$ {
    expires 3600s;
    add_header Pragma "public";
    add_header Cache-Control "public, must-revalidate, proxy-revalidate";
}
location ~ \.(asf|asx|wax|wmv|wmx|avi|bmp|class|divx|doc|docx|eot|exe|gif|gz|gzip|ico|jpg|jpeg|jpe|mdb|mid|midi|mov|qt|mp3|m4a|mp4|m4v|mpeg|mpg|mpe|mpp|otf|odb|odc|odf|odg|odp|ods|odt|ogg|pdf|png|pot|pps|ppt|pptx|ra|ram|svg|svgz|swf|tar|tif|tiff|ttf|ttc|wav|wma|wri|xla|xls|xlsx|xlt|xlw|zip)$ {
    expires 31536000s;
    add_header Pragma "public";
    add_header Cache-Control "public, must-revalidate, proxy-revalidate";
}
# END W3TC Browser Cache
# BEGIN W3TC Page Cache core
rewrite ^(.*\/)?w3tc_rewrite_test$ $1?w3tc_rewrite_test=1 last;
set $w3tc_rewrite 1;
if ($request_method = POST) {
    set $w3tc_rewrite 0;
}
if ($query_string != "") {
    set $w3tc_rewrite 0;
}
if ($http_host != "www.lifebit.me") {
    set $w3tc_rewrite 0;
}
set $w3tc_rewrite2 1;
if ($request_uri !~ \/$) {
    set $w3tc_rewrite2 0;
}
if ($request_uri ~* "(sitemap(_index)?\.xml(\.gz)?|[a-z0-9_\-]+-sitemap([0-9]+)?\.xml(\.gz)?)") {
    set $w3tc_rewrite2 1;
}
if ($w3tc_rewrite2 != 1) {
    set $w3tc_rewrite 0;
}
set $w3tc_rewrite3 1;
if ($request_uri ~* "(\/wp-admin\/|\/xmlrpc.php|\/wp-(app|cron|login|register|mail)\.php|\/feed\/|wp-.*\.php|index\.php)") {
    set $w3tc_rewrite3 0;
}
if ($request_uri ~* "(wp\-comments\-popup\.php|wp\-links\-opml\.php|wp\-locations\.php)") {
    set $w3tc_rewrite3 1;
}
if ($w3tc_rewrite3 != 1) {
    set $w3tc_rewrite 0;
}
if ($http_cookie ~* "(comment_author|wp\-postpass|wordpress_\[a\-f0\-9\]\+|wordpress_logged_in)") {
    set $w3tc_rewrite 0;
}
if ($http_user_agent ~* "(W3\ Total\ Cache/0\.9\.2\.4)") {
    set $w3tc_rewrite 0;
}
set $w3tc_ua "";
set $w3tc_ref "";
set $w3tc_ssl "";
set $w3tc_enc "";
if ($http_accept_encoding ~ gzip) {
    set $w3tc_enc _gzip;
}
set $w3tc_ext "";
if (-f "$document_root/wp-content/w3tc/pgcache/$request_uri/_index$w3tc_ua$w3tc_ref$w3tc_ssl.html$w3tc_enc") {
    set $w3tc_ext .html;
}
if ($w3tc_ext = "") {
  set $w3tc_rewrite 0;
}
if ($w3tc_rewrite = 1) {
    rewrite .* "/wp-content/w3tc/pgcache/$request_uri/_index$w3tc_ua$w3tc_ref$w3tc_ssl$w3tc_ext$w3tc_enc" last;
}
# END W3TC Page Cache core

The nginx.conf above is my current active configuration, Page Cache (cache home page, cache request only.., don’t cache pages..), Browser Cache (set expires header, set cache control header, enable http gzip, cache control policy: cache with validation public, must-revalidate, proxy-revalidate).

Thanks for your reply Frederick, please let me know if you need any info from me.

Now I uncheck “Set W3 Total Cache header” & “Enable HTTP (gzip) compression” in Browser Cache tab, “Cache SSL (https) requests” in Page Cache tab (yes, seems irrelevant), and then restart NGINX.
Curl result:

HTTP/1.1 200 OK
Server: nginx
Date: Fri, 17 Aug 2012 00:03:11 GMT
Content-Type: text/html
Content-Length: 72853
Last-Modified: Fri, 17 Aug 2012 00:03:08 GMT
Connection: keep-alive
Vary: Accept-Encoding
Expires: Fri, 17 Aug 2012 01:03:08 GMT
Cache-Control: max-age=3597
Vary: Cookie
Pragma: public
Cache-Control: max-age=3600, public, must-revalidate, proxy-revalidate
Accept-Ranges: bytes

At least now the first Cache-Control header is max-age, not no-cache. But is it normal & OK having two Cache-Control header? I believe the first Cache-Control header is from Page Cache.

Hi thanks for your reply guys.

I tried removing DB Cache Reloaded plugin, but problem still exist. Somehow I suspect this problem is about caching.

Then I remember I installed APC PHP opcode on my server with apc.stat=0 that way APC / PHP will ignore the changes we made on files / code / script.

apc.stat controls whether or not APC checks if a file has been updated in the filesystem, and it will cause your server to always serve the cached version of scripts, even if you change the code.

So, either remove the apc.stat=0 in APC settings, you have to disable APC while upgrading your WordPress installation. This solved my problem.

Hope this helps!

Oh ya right. I never use menus before.

Thanks wordbrother.

Hi sorry if this is a little bit out of topic. I’m planning to use S3 with this plugin, so is this plugin still good with WP 3.3? No issues at all?
Thanks!

I’m using ‘All in One SEO Pack’, quite similar I guess.
I tried disable the SEO plugin, but still can’t solve the problem..
Thanks anyway Smos

Yes I have the same problem, Smos.
Resolved yet?

Hi Northlake,
Yes it works! Table created and plugin runs smoothly. Do I have to change it back?
But I still don’t understand what cause this problem. I’m using all the latest release for wordpress, theme, and plugins.
Thank you!