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W3 Total Cache
[resolved] Header Expire (13 posts)

  1. invi2003
    Member
    Posted 3 years ago #

    I have a question when using the Expires Header option within w3-total-cache Browser Cache.. When I check my site using redbot.org, it shows:

    #Vary: User-Agent can cause cache inefficiency
    # This response is stale.
    # This response might be served by a cache, even though it is stale.

    Is this a normal behavior that I should ignore ?

    Thanks

    http://wordpress.org/extend/plugins/w3-total-cache/

  2. efikim
    Member
    Posted 3 years ago #

    This might be caused if your server doesn't have the time correctly set, or doesn't provide the timezone to PHP, maybe.

    I'm on shared hosting and get a warning about PHP timezone from W3TC's compatibility check, and got a similar error (I can't remember exactly what it said now) when I used redbot to check the headers. I haven't got round to asking my hosting company if they can do something about it yet, so it could be something else entirely!

  3. invi2003
    Member
    Posted 3 years ago #

    Still no go.

    Server Modules & Resources:
    PHP Version: 5.1.6
    PHP Timezone: OK
    Web Server: Apache
    FTP functions: OK (required for Self-hosted (FTP) CDN support)
    Multibyte String support: OK (required for Rackspace Cloud Files support)
    cURL extension: OK (required for Amazon S3 support)
    zlib extension: OK (required for compression support)
    Opcode cache: eAccelerator
    Memcache extension: OK
    Mime type detection: Mimetype
    Hash function: hash (required for NetDNA purge support)
    Safe mode: Off
    Open basedir: Off
    zlib output compression: Off
    mod_mime: OK
    mod_expires: OK
    mod_deflate / mod_gzip: OK
    mod_headers: OK
    mod_env: OK
    mod_setenvif: OK
    mod_rewrite: OK

  4. thatruth2006
    Member
    Posted 3 years ago #

    How did you get all your mods turned on and eAccelerator enabled, I new to VPS, and all mine come back not installed when i do compatibility check, any help is appreciated.

  5. Frederick Townes
    Member
    Plugin Author

    Posted 3 years ago #

    @invi2003, requires mod_expires and the appropriate browser cache options enabled for the object you're testing. Make sure that .htaccess is updated (there are no warnings from W3TC) and from there you should be ok.

    @thatruth2006, hard question to answer without knowing how your server is set up.

  6. invi2003
    Member
    Posted 3 years ago #

    @thatruth2006 I have my own dedicated server so I was able to enable these features. Don't know much about doing it on VPS.

    @Frederick Townes here's my .htaccess code

    # BEGIN W3TC Skip 404 error handling by WordPress for static files
    <IfModule mod_rewrite.c>
    RewriteEngine On
    RewriteCond %{REQUEST_FILENAME} !-f
    RewriteCond %{REQUEST_FILENAME} !-d
    RewriteCond %{REQUEST_FILENAME} \.(css|js|html|htm|rtf|rtx|svg|svgz|txt|xsd|xsl|xml|asf|asx|wax|wmv|wmx|avi|bmp|class|divx|doc|docx|exe|gif|gz|gzip|ico|jpg|jpeg|jpe|mdb|mid|midi|mov|qt|mp3|m4a|mp4|m4v|mpeg|mpg|mpe|mpp|odb|odc|odf|odg|odp|ods|odt|ogg|pdf|png|pot|pps|ppt|pptx|ra|ram|swf|tar|tif|tiff|wav|wma|wri|xla|xls|xlsx|xlt|xlw|zip)$ [NC]
    RewriteRule .* - [L]
    </IfModule>
    # END W3TC Skip 404 error handling by WordPress for static files

    # BEGIN HTTP Compression
    <IfModule mod_deflate.c>
    # Netscape 4.x has some problems...
    BrowserMatch ^Mozilla/4 gzip-only-text/html
    # Netscape 4.06-4.08 have some more problems
    BrowserMatch ^Mozilla/4\.0[678] no-gzip
    # MSIE masquerades as Netscape, but it is fine
    BrowserMatch \bMSIE !no-gzip !gzip-only-text/html
    # NOTE: Due to a bug in mod_setenvif up to Apache 2.0.48
    # the above regex won't work. You can use the following
    # workaround to get the desired effect:
    BrowserMatch \bMSI[E] !no-gzip !gzip-only-text/html
    # Don't compress media or scripts
    SetEnvIfNoCase Request_URI (?:bmp|gif|jpe?g|php|png|swf|tiff?)$ no-gzip dont-vary
    # Make sure proxies don't deliver the wrong content
    Header append Vary User-Agent env=!dont-vary
    # Fragment size to be compressed at one time by zlib
    #DeflateBufferSize 4096
    # Amount of compression applied to output
    #DeflateCompressionLevel 9
    # How much memory should be used by zlib for compression
    #DeflateMemLevel 9
    # Zlib compression window size
    #DeflateWindowSize 15
    # Enable HTTP Compression policy for all except .css, .js and .html documents
    SetOutputFilter DEFLATE
    AddOutputFilterByType DEFLATE text/css text/plain text/html text/xml text/xsd text/xsl application/x-javascript \
    \. application/wlwmanifest+xml image/svg+xml image/x-icon
    </IfModule>
    # END HTTP Compression

    # BEGIN W3TC Browser Cache
    <IfModule mod_mime.c>
    AddType text/css .css
    AddType application/x-javascript .js
    AddType text/html .html .htm
    AddType text/richtext .rtf .rtx
    AddType image/svg+xml .svg .svgz
    AddType text/plain .txt
    AddType text/xsd .xsd
    AddType text/xsl .xsl
    AddType text/xml .xml
    AddType video/asf .asf .asx .wax .wmv .wmx
    AddType video/avi .avi
    AddType image/bmp .bmp
    AddType application/java .class
    AddType video/divx .divx
    AddType application/msword .doc .docx
    AddType application/x-msdownload .exe
    AddType image/gif .gif
    AddType application/x-gzip .gz .gzip
    AddType image/x-icon .ico
    AddType image/jpeg .jpg .jpeg .jpe
    AddType application/vnd.ms-access .mdb
    AddType audio/midi .mid .midi
    AddType video/quicktime .mov .qt
    AddType audio/mpeg .mp3 .m4a
    AddType video/mp4 .mp4 .m4v
    AddType video/mpeg .mpeg .mpg .mpe
    AddType application/vnd.ms-project .mpp
    AddType application/vnd.oasis.opendocument.database .odb
    AddType application/vnd.oasis.opendocument.chart .odc
    AddType application/vnd.oasis.opendocument.formula .odf
    AddType application/vnd.oasis.opendocument.graphics .odg
    AddType application/vnd.oasis.opendocument.presentation .odp
    AddType application/vnd.oasis.opendocument.spreadsheet .ods
    AddType application/vnd.oasis.opendocument.text .odt
    AddType audio/ogg .ogg
    AddType application/pdf .pdf
    AddType image/png .png
    AddType application/vnd.ms-powerpoint .pot .pps .ppt .pptx
    AddType audio/x-realaudio .ra .ram
    AddType application/x-shockwave-flash .swf
    AddType application/x-tar .tar
    AddType image/tiff .tif .tiff
    AddType audio/wav .wav
    AddType audio/wma .wma
    AddType application/vnd.ms-write .wri
    AddType application/vnd.ms-excel .xla .xls .xlsx .xlt .xlw
    AddType application/zip .zip
    </IfModule>
    <IfModule mod_expires.c>
    ExpiresActive On
    ExpiresByType text/css M3600
    ExpiresByType application/x-javascript M3600
    ExpiresByType text/html M3600
    ExpiresByType text/richtext M3600
    ExpiresByType image/svg+xml M3600
    ExpiresByType text/plain M3600
    ExpiresByType text/xsd M3600
    ExpiresByType text/xsl M3600
    ExpiresByType text/xml M3600
    ExpiresByType video/asf M31536000
    ExpiresByType video/avi M31536000
    ExpiresByType image/bmp M31536000
    ExpiresByType application/java M31536000
    ExpiresByType image/x-icon M31536000
    ExpiresByType image/jpeg M31536000
    ExpiresByType application/vnd.ms-access M31536000
    ExpiresByType audio/midi M31536000
    ExpiresByType video/quicktime M31536000
    ExpiresByType audio/mpeg M31536000
    ExpiresByType video/mp4 M31536000
    ExpiresByType video/mpeg M31536000
    ExpiresByType application/vnd.ms-project M31536000
    ExpiresByType application/vnd.oasis.opendocument.database M31536000
    ExpiresByType application/vnd.oasis.opendocument.chart M31536000
    ExpiresByType application/vnd.oasis.opendocument.formula M31536000
    ExpiresByType application/vnd.oasis.opendocument.graphics M31536000
    ExpiresByType application/vnd.oasis.opendocument.presentation M31536000
    ExpiresByType application/vnd.oasis.opendocument.spreadsheet M31536000
    ExpiresByType application/vnd.oasis.opendocument.text M31536000
    ExpiresByType audio/ogg M31536000
    ExpiresByType application/pdf M31536000
    ExpiresByType image/png M31536000
    ExpiresByType application/vnd.ms-powerpoint M31536000
    ExpiresByType audio/x-realaudio M31536000
    ExpiresByType application/x-shockwave-flash M31536000
    ExpiresByType application/x-tar M31536000
    ExpiresByType image/tiff M31536000
    ExpiresByType audio/wav M31536000
    ExpiresByType audio/wma M31536000
    ExpiresByType application/vnd.ms-write M31536000
    ExpiresByType application/vnd.ms-excel M31536000
    ExpiresByType application/zip M31536000
    </IfModule>
    <IfModule mod_deflate.c>
    <IfModule mod_setenvif.c>
    BrowserMatch ^Mozilla/4 gzip-only-text/html
    BrowserMatch ^Mozilla/4\.0[678] no-gzip
    BrowserMatch \bMSIE !no-gzip !gzip-only-text/html
    BrowserMatch \bMSI[E] !no-gzip !gzip-only-text/html
    </IfModule>
    <IfModule mod_headers.c>
    Header append Vary User-Agent env=!dont-vary
    </IfModule>
    AddOutputFilterByType DEFLATE text/css application/x-javascript text/html text/richtext image/svg+xml text/plain text/xsd text/xsl text/xml image/x-icon
    </IfModule>
    <FilesMatch "\.(css|js)$">
    <IfModule mod_headers.c>
    Header set Pragma "public"
    Header set Cache-Control "public"
    </IfModule>
    FileETag MTime Size
    <IfModule mod_headers.c>
    Header set X-Powered-By "W3 Total Cache/0.9.1.1"
    </IfModule>
    </FilesMatch>
    <FilesMatch "\.(html|htm|rtf|rtx|svg|svgz|txt|xsd|xsl|xml)$">
    <IfModule mod_headers.c>
    Header set Pragma "public"
    Header set Cache-Control "public, must-revalidate, proxy-revalidate"
    </IfModule>
    FileETag MTime Size
    <IfModule mod_headers.c>
    Header set X-Powered-By "W3 Total Cache/0.9.1.1"
    </IfModule>
    </FilesMatch>
    <FilesMatch "\.(asf|asx|wax|wmv|wmx|avi|bmp|class|divx|doc|docx|exe|gif|gz|gzip|ico|jpg|jpeg|jpe|mdb|mid|midi|mov|qt|mp3|m4a|mp4|m4v|mpeg|mpg|mpe|mpp|odb|odc|odf|odg|odp|ods|odt|ogg|pdf|png|pot|pps|ppt|pptx|ra|ram|swf|tar|tif|tiff|wav|wma|wri|xla|xls|xlsx|xlt|xlw|zip)$">
    <IfModule mod_headers.c>
    Header set Pragma "public"
    Header set Cache-Control "public, must-revalidate, proxy-revalidate"
    </IfModule>
    FileETag MTime Size
    <IfModule mod_headers.c>
    Header set X-Powered-By "W3 Total Cache/0.9.1.1"
    </IfModule>
    </FilesMatch>
    <FilesMatch "\.(asf|asx|wax|wmv|wmx|avi|bmp|class|divx|doc|docx|exe|gif|gz|gzip|ico|jpg|jpeg|jpe|mdb|mid|midi|mov|qt|mp3|m4a|mp4|m4v|mpeg|mpg|mpe|mpp|odb|odc|odf|odg|odp|ods|odt|ogg|pdf|png|pot|pps|ppt|pptx|ra|ram|swf|tar|tif|tiff|wav|wma|wri|xla|xls|xlsx|xlt|xlw|zip)$">
    <IfModule mod_headers.c>
    Header set Pragma "public"
    Header set Cache-Control "public, must-revalidate, proxy-revalidate"
    </IfModule>
    FileETag MTime Size
    <IfModule mod_headers.c>
    Header set X-Powered-By "W3 Total Cache/0.9.1.1"
    </IfModule>
    </FilesMatch>
    # END W3TC Browser Cache

    # BEGIN WordPress
    <IfModule mod_rewrite.c>
    RewriteEngine On
    RewriteBase /
    RewriteRule ^index\.php$ - [L]
    RewriteCond %{REQUEST_FILENAME} !-f
    RewriteCond %{REQUEST_FILENAME} !-d
    RewriteRule . /index.php [L]
    </IfModule>

    # END WordPress

  7. Frederick Townes
    Member
    Plugin Author

    Posted 3 years ago #

    Ok, so did you use one the various tools mentioned in the FAQ to test your pages/objects? http://web-sniffer.net/ is a decent tool.

  8. invi2003
    Member
    Posted 3 years ago #

    I tried the tool and this is the result i see when using googbot as the agent

    HTTP Response Header

    Name Value Delim
    Status: HTTP/1.1 200 OK
    Date: Wed, 04 Aug 2010 16:57:28 GMT
    Server: Apache/2.2.3 (CentOS)
    X-Powered-By: W3 Total Cache/0.9.1.1
    X-Pingback: http://www.(REMOVED).com/xmlrpc.php
    Cache-Control: max-age=-440870
    Expires: Fri, 30 Jul 2010 14:29:38 GMT
    Vary: Accept-Encoding,User-Agent
    Content-Encoding: gzip
    Content-Length: 17518
    Connection: close
    Content-Type: text/html; charset=UTF-8

    But when I do it with Web-sniffer as an agent it shows

    HTTP Response Header

    Name Value Delim
    Status: HTTP/1.1 200 OK
    Date: Wed, 04 Aug 2010 16:59:55 GMT
    Server: Apache/2.2.3 (CentOS)
    X-Powered-By: PHP/5.1.6
    Last-Modified: Wed, 04 Aug 2010 16:37:46 GMT
    Vary: Accept-Encoding,Cookie,User-Agent
    Expires: Wed, 04 Aug 2010 17:37:46 GMT
    Pragma: public
    Cache-Control: public, must-revalidate, proxy-revalidate
    Etag: 1413eb9051a3c4b55ed9eaccdd79cf97
    Content-Encoding: gzip
    X-Pingback: http://www.(REMOVED).com/xmlrpc.php
    Connection: close
    Transfer-Encoding: chunked
    Content-Type: text/html; charset=UTF-8

    I'm kind of confuse here. Checking Google and Yahoo the last cache page they have of my site is Google from 6/28/2010 and Yahoo 8/01/2010

  9. Frederick Townes
    Member
    Plugin Author

    Posted 3 years ago #

    You have some non-default settings or other (non-W3TC) directives in your .htaccess file that are causing anomalies.

    Can you submit a bug submission form from the support tab of the plugin?

  10. invi2003
    Member
    Posted 3 years ago #

    Just did.

    Just so you know I just added this to .htaccess while troubleshooting

    <FilesMatch "\.(html|htm|xml|txt|xsl|rdf|rss|gz|gzip)$">
    <IfModule mod_expires.c>
    ExpiresActive On
    ExpiresDefault A3600
    </IfModule>
    </FilesMatch>

    # 1 Year
    <FilesMatch "\.(gif|ico|jpg|jpeg|jpe|png)$">
    <IfModule mod_expires.c>
    ExpiresActive On
    ExpiresDefault A2592000
    </IfModule>
    </FilesMatch>

  11. Frederick Townes
    Member
    Plugin Author

    Posted 3 years ago #

    Replied.

  12. invi2003
    Member
    Posted 3 years ago #

    Frederick Thanks for the support. For now I'll leave header cache disabled via the plugin and im adding the header expire manually to .htaccess. I'm already seeing improvement.

    Thanks.

  13. Frederick Townes
    Member
    Plugin Author

    Posted 3 years ago #

    Ok, but that doesn't help improve the plugin which intends to do this automatically for you.

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