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WP Super Cache / 0.5.2
WP Super Cache v0.5.2
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wp-super-cache / readme.txt
wp-super-cache Last commit date
plugins 18 years ago Changelog.txt 18 years ago readme.txt 18 years ago wp-cache-base.php 18 years ago wp-cache-config-sample.php 18 years ago wp-cache-phase1.php 18 years ago wp-cache-phase2.php 18 years ago wp-cache.php 18 years ago
readme.txt
93 lines
1 === WP Super Cache ===
2 Contributors: donncha
3 Tags: performance,caching,wp-cache
4 Tested up to: 2.3.1
5 Stable tag: 0.5.2
6
7 A modification of WP-Cache that produces static html files.
8
9 == Description ==
10 This plugin generates static html files from your dynamic WordPress blog. After a html file is generated your webserver will serve that file instead of processing the comparatively heavier and more expensive WordPress PHP scripts.
11
12 However, because a user's details are displayed in the comment form after they leave a comment, the plugin will only serve static html files to:
13
14 1. Users who are not logged in.
15 2. Users who have not left a comment on your blog.
16 3. Or users who have not viewed a password protected post.
17
18 The good news is that probably more than 99% of your visitors don't do any of the above! Those users who don't see the static files will still benefit because they will see regular WP-Cache cached files and your server won't be as busy as before. This plugin should help your server cope with a front page appearance on digg.com or other social networking site.
19
20 == Installation ==
21 1. You must have mod mime, mod rewrite and fancy permalinks enabled. PHP safe mode should be disabled.
22 2. If you have WP-Cache installed already, please disable it. Edit wp-config.php and make sure the WP_CACHE define is deleted, and remove the files wp-content/wp-cache-config.php and wp-content/advanced-cache.php. These will be recreated when you install this plugin.
23 3. Upload this directory to your plugins directory. It will create a 'wp-content/plugins/wp-super-cache/' directory.
24 4. If you are using WordPress MU you will need to install this in 'wp-content/mu-plugins/wp-super-cache/' and the file wp-cache.php must be copied into the mu-plugins directory.
25 5. WordPress users should go to their Plugins page and activate "WP Super Cache".
26 6. Now go to Options->WP Super Cache and enable caching. If you see an error message or a blank screen you may need to fix it. See the "FAQ" section later in this readme for instructions.
27 7. mod_rewrite rules will be inserted into your .htaccess file. Look in your web root directory for this file. It should look similar to this:
28
29 -----------------.htaccess-----------------
30 RewriteEngine On
31 RewriteBase /
32
33 RewriteCond %{QUERY_STRING} !.*s=.*
34 RewriteCond %{HTTP_COOKIE} !^.*comment_author_.*$
35 RewriteCond %{HTTP_COOKIE} !^.*wordpressuser.*$
36 RewriteCond %{HTTP_COOKIE} !^.*wp-postpass_.*$
37 RewriteCond %{HTTP:Accept-Encoding} gzip
38 RewriteCond %{DOCUMENT_ROOT}/wp-content/cache/supercache/%{HTTP_HOST}/$1index.html.gz -f
39 RewriteRule ^(.*) /wp-content/cache/supercache/%{HTTP_HOST}/$1index.html.gz [L]
40
41 RewriteCond %{QUERY_STRING} !.*s=.*
42 RewriteCond %{HTTP_COOKIE} !^.*comment_author_.*$
43 RewriteCond %{HTTP_COOKIE} !^.*wordpressuser.*$
44 RewriteCond %{HTTP_COOKIE} !^.*wp-postpass_.*$
45 RewriteCond %{DOCUMENT_ROOT}/wp-content/cache/supercache/%{HTTP_HOST}/$1index.html -f
46 RewriteRule ^(.*) /wp-content/cache/supercache/%{HTTP_HOST}/$1index.html [L]
47
48 RewriteCond %{REQUEST_FILENAME} !-f
49 RewriteCond %{REQUEST_FILENAME} !-d
50 RewriteRule . /index.php [L]
51 -----------------.htaccess-----------------
52 8. After you have enabled the plugin, look for "wp-content/cache/.htaccess". If it's not there you must create it. It should read:
53 AddEncoding x-gzip .gz
54 AddType text/html .gz
55
56 == Frequently Asked Questions ==
57 If things don't work when you installed the plugin here are a few things to check:
58
59 1. Is wp-content writable by the web server?
60 2. Is there a wp-content/wp-cache-config.php ? If not, copy the file wp-super-cache/wp-cache-config-sample.php to wp-content/wp-cache-config.php and make sure WPCACHEHOME points at the right place. "plugins" should be "mu-plugins" if you're using WordPress MU.
61 3. Is there a wp-content/advanced-cache.php ? If not, then you must symlink wp-super-cache/wp-cache-phase1.php to it with the command while in the wp-content folder. `ln -s plugins/wp-super-cache/wp-cache-phase1.php advanced-cache.php` If you can't do that, then copy the file. That will work too.
62 4. Make sure the following line is in wp-config.php : `define( 'WP_CACHE', true );`
63 5. Try the Options->WP Super Cache page again and enable cache.
64 6. Look in wp-content/cache/supercache/. Are there directories and files there?
65 7. Anything in your php error_log?
66 8. If your browser keeps asking you to save the file after the super cache is installed you must disable Super Cache compression. Go to the Options->WP Super Cache page and disable it there.
67 9. The plugin does not work very well when PHP's safe mode is active. This must be disabled by your administrator.
68
69 == Custom Caching ==
70 It is now possible to hook into the caching process using the add_cacheacton() function.
71 Three hooks are available:
72
73 1. 'wp_cache_get_cookies_values' - modify the key used by WP Cache.
74 2. 'add_cacheaction' - runs in phase2. Allows a plugin to add WordPress hooks.
75 3. 'cache_admin_page' - runs in the admin page. Use it to add modify that page.
76
77 There is one regular WordPress filter too. Use the "do_createsupercache" filter
78 to customize the checks made before caching. The filter accepts one parameter.
79 The output of WP-Cache's wp_cache_get_cookies_values() function.
80
81 See plugins/searchengine.php as an example I use for my [No Adverts for Friends](plugin at http://ocaoimh.ie/no-adverts-for-friends/)
82
83 == Updates ==
84 Updates to the plugin will be posted here, to http://ocaoimh.ie/ and the page
85 http://ocaoimh.ie/wp-super-cache/ will always link to the newest version.
86
87 == Thanks ==
88 I would sincerely like to thank [John Pozadzides](http://onemansblog.com/) for
89 giving me the idea for this, for writing the "How it works" section and for
90 testing the plugin through 2 front page appearances on digg.com
91 Thanks to James Farmer and Andrew Billits of [Edu Blogs](http://edublogs.org/) fame who helped me
92 make this more WordPress MU friendly.
93