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Apache Browser Caching

Posted on 2012-09-05
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Last Modified: 2012-10-02
Hi guys,

I have got a default install of apache2 on a vps server. I am trying to enable browser caching, I have done this in my .htaccess with no luck


<IfModule mod_expires.c>

# Enable expirations
ExpiresActive On

# Default directive
ExpiresDefault "access plus 1 month"

</IfModule>

ExpiresByType image/gif "access plus 1 month"
ExpiresByType image/png "access plus 1 month"
ExpiresByType image/jpg "access plus 1 month"
ExpiresByType image/jpeg "access plus 1 month"
ExpiresByType text/css "access plus 1 month"
ExpiresByType image/x-icon "access plus 1 year"
ExpiresByType application/javascript "access plus 1 week"

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However google pagespeed tells me this is not working, do i need to enable this in other .htaccess files that are at a lower directory level or what am I doing wrong.


John
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Question by:john_yourspace
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12 Comments
 
LVL 58

Expert Comment

by:Gary
ID: 38370632
Check http://www.webpagetest.org/ and paste the results url here
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Author Comment

by:john_yourspace
ID: 38370670
There is too much to paste

Here is one of the headers


Request Headers:

GET /catalog/view/javascript/jquery/tabs.js HTTP/1.1
Accept: */*
Referer: http://vps.discountsupplements.ie/
Accept-Language: en-us
User-Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; MS STORE DMC2.6.3411.2; PTST 2.328)
Accept-Encoding: gzip, deflate
Host: vps.discountsupplements.ie
Connection: Keep-Alive
Cookie: PHPSESSID=l68ua11vv5lmdehjldeluq19t1; language=en; currency=EUR
Response Headers:

HTTP/1.1 200 OK
Date: Thu, 06 Sep 2012 00:40:21 GMT
Server: Apache/2.2.16 (Debian)
Last-Modified: Wed, 05 Sep 2012 13:27:54 GMT
ETag: "444971-1dc-4c8f457980a80"
Accept-Ranges: bytes
Vary: Accept-Encoding
Content-Encoding: gzip
Content-Length: 230
Keep-Alive: timeout=15, max=100
Connection: Keep-Alive
Content-Type: application/javascript
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LVL 58

Expert Comment

by:Gary
ID: 38370837
Just paste the results url, not the resulting html.  Too late for me now but I have the url and will check tomorrow unless someone else comes along (in Ireland...)

The expires on all content from that url is Thu, 19 Nov 1981 08:52:00 GMT and
Cache-Control => no-store, no-cache, must-revalidate

What is the purpose of vps.theurl because when I check the normal url then the content is cached, so your htaccess is not being applied to this subdomain.
http://www.webpagetest.org/result/120906_55_1WC
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Author Comment

by:john_yourspace
ID: 38371556
the vps is our new server,

I have check the .htaccess and its not been read.. ie i put some garbage in there...

here is my apache2.conf file

#
# Based upon the NCSA server configuration files originally by Rob McCool.
#
# This is the main Apache server configuration file.  It contains the
# configuration directives that give the server its instructions.
# See http://httpd.apache.org/docs/2.2/ for detailed information about
# the directives.
#
# Do NOT simply read the instructions in here without understanding
# what they do.  They're here only as hints or reminders.  If you are unsure
# consult the online docs. You have been warned.  
#
# The configuration directives are grouped into three basic sections:
#  1. Directives that control the operation of the Apache server process as a
#     whole (the 'global environment').
#  2. Directives that define the parameters of the 'main' or 'default' server,
#     which responds to requests that aren't handled by a virtual host.
#     These directives also provide default values for the settings
#     of all virtual hosts.
#  3. Settings for virtual hosts, which allow Web requests to be sent to
#     different IP addresses or hostnames and have them handled by the
#     same Apache server process.
#
# Configuration and logfile names: If the filenames you specify for many
# of the server's control files begin with "/" (or "drive:/" for Win32), the
# server will use that explicit path.  If the filenames do *not* begin
# with "/", the value of ServerRoot is prepended -- so "foo.log"
# with ServerRoot set to "/etc/apache2" will be interpreted by the
# server as "/etc/apache2/foo.log".
#

### Section 1: Global Environment
#
# The directives in this section affect the overall operation of Apache,
# such as the number of concurrent requests it can handle or where it
# can find its configuration files.
#

#
# ServerRoot: The top of the directory tree under which the server's
# configuration, error, and log files are kept.
#
# NOTE!  If you intend to place this on an NFS (or otherwise network)
# mounted filesystem then please read the LockFile documentation (available
# at <URL:http://httpd.apache.org/docs/2.2/mod/mpm_common.html#lockfile>);
# you will save yourself a lot of trouble.
#
# Do NOT add a slash at the end of the directory path.
#
#ServerRoot "/etc/apache2"

#
# The accept serialization lock file MUST BE STORED ON A LOCAL DISK.
#
LockFile ${APACHE_LOCK_DIR}/accept.lock

#
# PidFile: The file in which the server should record its process
# identification number when it starts.
# This needs to be set in /etc/apache2/envvars
#
PidFile ${APACHE_PID_FILE}

#
# Timeout: The number of seconds before receives and sends time out.
#
Timeout 300

#
# KeepAlive: Whether or not to allow persistent connections (more than
# one request per connection). Set to "Off" to deactivate.
#
KeepAlive On

#
# MaxKeepAliveRequests: The maximum number of requests to allow
# during a persistent connection. Set to 0 to allow an unlimited amount.
# We recommend you leave this number high, for maximum performance.
#
MaxKeepAliveRequests 100

#
# KeepAliveTimeout: Number of seconds to wait for the next request from the
# same client on the same connection.
#
KeepAliveTimeout 15

##
## Server-Pool Size Regulation (MPM specific)
## 

# prefork MPM
# StartServers: number of server processes to start
# MinSpareServers: minimum number of server processes which are kept spare
# MaxSpareServers: maximum number of server processes which are kept spare
# MaxClients: maximum number of server processes allowed to start
# MaxRequestsPerChild: maximum number of requests a server process serves
<IfModule mpm_prefork_module>
    StartServers          5
    MinSpareServers       5
    MaxSpareServers      10
    MaxClients          150
    MaxRequestsPerChild   0
</IfModule>

# worker MPM
# StartServers: initial number of server processes to start
# MaxClients: maximum number of simultaneous client connections
# MinSpareThreads: minimum number of worker threads which are kept spare
# MaxSpareThreads: maximum number of worker threads which are kept spare
# ThreadLimit: ThreadsPerChild can be changed to this maximum value during a
#              graceful restart. ThreadLimit can only be changed by stopping
#              and starting Apache.
# ThreadsPerChild: constant number of worker threads in each server process
# MaxRequestsPerChild: maximum number of requests a server process serves
<IfModule mpm_worker_module>
    StartServers          2
    MinSpareThreads      25
    MaxSpareThreads      75 
    ThreadLimit          64
    ThreadsPerChild      25
    MaxClients          150
    MaxRequestsPerChild   0
</IfModule>

# event MPM
# StartServers: initial number of server processes to start
# MaxClients: maximum number of simultaneous client connections
# MinSpareThreads: minimum number of worker threads which are kept spare
# MaxSpareThreads: maximum number of worker threads which are kept spare
# ThreadsPerChild: constant number of worker threads in each server process
# MaxRequestsPerChild: maximum number of requests a server process serves
<IfModule mpm_event_module>
    StartServers          2
    MaxClients          150
    MinSpareThreads      25
    MaxSpareThreads      75 
    ThreadLimit          64
    ThreadsPerChild      25
    MaxRequestsPerChild   0
</IfModule>

# These need to be set in /etc/apache2/envvars
User ${APACHE_RUN_USER}
Group ${APACHE_RUN_GROUP}

#
# AccessFileName: The name of the file to look for in each directory
# for additional configuration directives.  See also the AllowOverride
# directive.
#

AccessFileName .htaccess

#
# The following lines prevent .htaccess and .htpasswd files from being 
# viewed by Web clients. 
#
<Files ~ "^\.ht">
    Order allow,deny
    Deny from all
    Satisfy all
</Files>

#
# DefaultType is the default MIME type the server will use for a document
# if it cannot otherwise determine one, such as from filename extensions.
# If your server contains mostly text or HTML documents, "text/plain" is
# a good value.  If most of your content is binary, such as applications
# or images, you may want to use "application/octet-stream" instead to
# keep browsers from trying to display binary files as though they are
# text.
#
DefaultType text/plain


#
# HostnameLookups: Log the names of clients or just their IP addresses
# e.g., www.apache.org (on) or 204.62.129.132 (off).
# The default is off because it'd be overall better for the net if people
# had to knowingly turn this feature on, since enabling it means that
# each client request will result in AT LEAST one lookup request to the
# nameserver.
#
HostnameLookups Off

# ErrorLog: The location of the error log file.
# If you do not specify an ErrorLog directive within a <VirtualHost>
# container, error messages relating to that virtual host will be
# logged here.  If you *do* define an error logfile for a <VirtualHost>
# container, that host's errors will be logged there and not here.
#
ErrorLog ${APACHE_LOG_DIR}/error.log

#
# LogLevel: Control the number of messages logged to the error_log.
# Possible values include: debug, info, notice, warn, error, crit,
# alert, emerg.
#
LogLevel warn

# Include module configuration:
Include mods-enabled/*.load
Include mods-enabled/*.conf

# Include all the user configurations:
Include httpd.conf

# Include ports listing
Include ports.conf

#
# The following directives define some format nicknames for use with
# a CustomLog directive (see below).
# If you are behind a reverse proxy, you might want to change %h into %{X-Forwarded-For}i
#
LogFormat "%v:%p %h %l %u %t \"%r\" %>s %O \"%{Referer}i\" \"%{User-Agent}i\"" vhost_combined
LogFormat "%h %l %u %t \"%r\" %>s %O \"%{Referer}i\" \"%{User-Agent}i\"" combined
LogFormat "%h %l %u %t \"%r\" %>s %O" common
LogFormat "%{Referer}i -> %U" referer
LogFormat "%{User-agent}i" agent

# Include of directories ignores editors' and dpkg's backup files,
# see README.Debian for details.

# Include generic snippets of statements
Include conf.d/

# Include the virtual host configurations:
Include sites-enabled/
<VirtualHost *:80>
    ServerName *.discountsupplements.ie
    DocumentRoot /var/www
    <Directory /var/www>
    		Options FollowSymLinks
    		AllowOverride All
    		 RewriteEngine on

    </Directory>
    
   
</VirtualHost>

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I added the

<VirtualHost *:80>
    ServerName *.discountsupplements.ie
    DocumentRoot /var/www
    <Directory /var/www>
    		Options FollowSymLinks
    		AllowOverride All
    		 RewriteEngine on

    </Directory>
    
   
</VirtualHost>

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so not sure if its correct

John
0
 
LVL 58

Expert Comment

by:Gary
ID: 38372185
Try this in your htaccess, are you setting a max age anywhere?

<IfModule mod_expires.c>
  ExpiresActive On
  ExpiresDefault "access plus 7 days"
  ExpiresByType text/html "access plus 7 days"
  ExpiresByType image/gif "access plus 7 days"
  ExpiresByType image/jpeg "access plus 7 days"
  ExpiresByType image/png "access plus 7 days"
  ExpiresByType text/css "access plus 7 days"
  ExpiresByType text/javascript "access plus 7 days"
  ExpiresByType application/x-javascript "access plus 7 days"
  ExpiresByType text/xml "access plus 7 days"
</IfModule>
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Author Comment

by:john_yourspace
ID: 38375813
Hi Gary,

From what I see my .htaccess isnt been read -

When i add some grabage code to it - no errors are displayed

John
0
 
LVL 26

Expert Comment

by:arober11
ID: 38375913
FYI:

The HTTP response header above has both a Last-Modified and an ETag entry:

Last-Modified: Wed, 05 Sep 2012 13:27:54 GMT
ETag: "444971-1dc-4c8f457980a80"


So your browser will probably cache those files for the duration of the session, and only check that those values haven't changed, with Apache, each time the file is referenced in a page, see"

http://httpd.apache.org/docs/2.2/mod/core.html#fileetag
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Author Comment

by:john_yourspace
ID: 38375951
Thank arober, any idea why the htaccess isn't been read?
0
 
LVL 58

Expert Comment

by:Gary
ID: 38376089
Just to be sure it is named .htaccess (preceding period)
Are you sure you are editing the correct apache.conf and that there are no include files overriding the Allow (like httpd.conf - which in your config above is before the virtual server so shouldnt matter...)
0
 
LVL 26

Expert Comment

by:arober11
ID: 38377786
Just make sure you have a: AllowOverride All in the applicable Directory block in the httpd.conf, without it the file will be ignored.  Also check that the server hasn't been configured to look for a different file name, via a AccessFileName   xxxxxxxx e.g.

You require something along the following lines, in the httpd.conf, or included *.conf file:
<Directory />
Options FollowSymLinks
AllowOverride All
# AccessFileName .htaccess
Order deny,allow
Deny from all
Satisfy all
</Directory>

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Accepted Solution

by:
john_yourspace earned 0 total points
ID: 38440383
I found another file that was configin the server it was in availablesites

Once I set the allowoverride here it worked

John
0
 

Author Closing Comment

by:john_yourspace
ID: 38453717
I found another file that was configin the server it was in availablesites

Once I set the allowoverride here it worked

John
0

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