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PS: You’ll need an Akismet.com API key to use it. Keys are free for personal blogs; paid subscriptions are available for businesses and commercial sites.
Contributors & Developers
“Akismet Anti-Spam” is open source software. The following people have contributed to this plugin.Contributors
Matt Mullenweg Ryan Boren Andy Skelton Michael Adams (mdawaffe) Alex Shiels Joseph Scott lessbloat Eoin Gallagher Christopher Finke Automattic Greg Stewart Josh Smith Stephane Daury (stephdau)SELL ANYTHING, ANYWHERE
With WooCommerce, you can sell both physical and digital goods in all shapes and sizes, offer product variations, multiple configurations, and instant downloads to shoppers, and even sell affiliate goods from online marketplaces.With premium extensions, you can offer bookings, memberships, and recurring subscriptions. Perhaps you’d like to sell monthly subscriptions for physical goods, or offer your members a discount on digital downloads? It’s all possible.
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LICENSE
Good news, this plugin is free for everyone! Since it’s released under the GPL, you can use it free of charge on your personal or commercial site.TRANSLATIONS
The plugin comes with various translations, please refer to the WordPress Codex for more information about activating the translation. If you want to help to translate the plugin to your language, please have a look at the sitemap.pot file which contains all definitions and may be used with a gettext editor like Poedit (Windows).SECURITY SERVICES
Stop worrying about data loss, downtime, and hacking. Jetpack helps you with:Brute force attack protection, spam filtering, and downtime monitoring
Daily or real-time backups of your entire site
Secure logins with optional two-factor authentication
Malware scanning, code scanning, and automated threat resolution
Fast, priority support from WordPress experts
EXPERT SUPPORT
We have a global team of Happiness Engineers ready to help you. Ask your questions in the support forum, or contact us directly.PAID SERVICES
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Installation is free, quick, and easy. Install Jetpack from our site in minutes.Garbage collection of old cache files won’t work if WordPress can’t find wp-cron.php. If your hostname resolves to 127.0.0.1 it could be preventing the garbage collection from working. Check your access_logs for wp-cron.php entries. Do they return a 404 (file not found) or 200 code? If it’s 404 or you don’t see wp-cron.php anywhere WordPress may be looking for that script in the wrong place. You should speak to your server administator to correct this or edit /etc/hosts on Unix servers and remove the following line. Your hostname must resolve to the external IP address other servers on the network/Internet use. See http://yoast.com/wp-cron-issues/ for more. A line like “127.0.0.1 localhost localhost.localdomain” is ok.
127.0.0.1 example.com
If old pages are being served to your visitors via the supercache, you may be missing Apache modules (or their equivalents if you don’t use Apache). 3 modules are required: mod_mime, mod_headers and mod_expires. The last two are especially important for making sure browsers load new versions of existing pages on your site.
The error message, “WP Super Cache is installed but broken. The path to wp-cache-phase1.php in wp-content/advanced-cache.php must be fixed!” appears at the end of every page. Open the file wp-content/advanced-cache.php in your favourite editor. Is the path to wp-cache-phase1.php correct? This file will normally be in wp-content/plugins/wp-super-cache/. If it is not correct the caching engine will not load.
Caching doesn’t work. The timestamp on my blog keeps changing when I reload. Check that the path in your .htaccess rules matches where the supercache directory is. You may have to hardcode it. Try disabling supercache mode.
If supercache cache files are generated but not served, check the permissions on all your wp-content/cache/supercache folders (and each of wp-content cache and supercache folders) and wp-content/cache/.htaccess. If your PHP runs as a different user to Apache and permissions are strict Apache may not be able to read the PHP generated cache files. To fix you must add the following line to your wp-config.php (Add it above the WP_CACHE define.) Then clear your cache.umask( 0022 );
If you see garbage in your browser after enabling compression in the plugin, compression may already be enabled in your web server. In Apache you must disable mod_deflate, or in PHP zlib compression may be enabled. You can disable that in three ways. If you have root access, edit your php.ini and find the zlib.output_compression setting and make sure it’s “Off” or add this line to your .htaccess:php_flag zlib.output_compression off
If that doesn’t work, add this line to your wp-config.php:ini_set(‘zlib.output_compression’, 0);
The “white screen of death” or a blank page when you visit your site is almost always caused by a PHP error but it may also be caused by APC. Disable that PHP extension if you have trouble and replace with eAccelerator or Xcache.
After uninstalling, your permalinks may break if you remove the WordPress mod_rewrite rules too. Regenerate those rules by visiting the Settings->Permalink page and saving that form again.
If your blog refuses to load make sure your wp-config.php is correct. Are you missing an opening or closing PHP tag?
Your front page is ok but posts and pages give a 404? Go to Settings->permalinks and click “Save” once you’ve selected a custom permalink structure. You may need to manually update your .htaccess file.
If certain characters do not appear correctly on your website your server may not be configured correctly. You need to tell visitors what character set is used. Go to Settings->Reading and copy the ‘Encoding for pages and feeds’ value. Edit the .htaccess file with all your Supercache and WordPress rewrite rules and add this at the top, replacing CHARSET with the copied value. (for example, ‘UTF-8’)AddDefaultCharset CHARSET
Use Cron View to help diagnose garbage collection and preload problems. Use the plugin to make sure jobs are scheduled and for what time. Look for the wp_cache_gc and wp_cache_full_preload_hook jobs.
The error message, “WP Super Cache is installed but broken. The constant WPCACHEHOME must be set in the file wp-config.php and point at the WP Super Cache plugin directory.” appears at the end of every page. You can delete wp-content/advanced-cache.php and reload the plugin settings page or edit wp-config.php and look for WPCACHEHOME and make sure it points at the wp-super-cache folder. This will normally be wp-content/plugins/wp-super-cache/ but you’ll likely need the full path to that file (so it’s easier to let the settings page fix it). If it is not correct the caching engine will not load.
If your server is running into trouble because of the number of semaphores used by the plugin it’s because your users are using file locking which is not recommended (but is needed by a small number of users). You can globally disable file locking by defining the constant WPSC_DISABLE_LOCKING, or defining the constant WPSC_REMOVE_SEMAPHORE so that sem_remove() is called after every page is cached but that seems to cause problems for other processes requesting the same semaphore. Best to disable it.
Set the variable $htaccess_path in wp-config.php or wp-cache-config.php to the path of your global .htaccess if the plugin is looking for that file in the wrong directory. This might happen if you have WordPress installed in an unusual way.TROUBLESHOOTING
If things don’t work when you installed the plugin here are a few things to check:Is wp-content writable by the web server?
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.
Is there a wp-content/advanced-cache.php ? If not, then you must copy wp-super-cache/advanced-cache.php into wp-content/. You must edit the file and change the path so it points at the wp-super-cache folder.
If pages are not cached at all, remove wp-content/advanced-cache.php and recreate it, following the advice above.
Make sure the following line is in wp-config.php and it is ABOVE the “require_once(ABSPATH.’wp-settings.php’);” line:define( ‘WP_CACHE’, true );
Try the Settings->WP Super Cache page again and enable cache.
Look in wp-content/cache/supercache/. Are there directories and files there?
Anything in your php error_log?
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 Settings->WP Super Cache page and disable it there.
The plugin does not work very well when PHP’s safe mode is active. This must be disabled by your administrator.
If pages are randomly super cached and sometimes not, your blog can probably be viewed with and without the “www” prefix on the URL. You should choose one way and install the Enforce www preference plugin if you are using an old WordPress install. The latest versions redirect themselves (you should always be running the latest version of WordPress anyway!)
Private Server users at Dreamhost should edit wp-content/wp-cache-config.php and set the cache dir to “/tmp/” if they are getting errors about increasing CPU usage. See this discussion for more.
File locking errors such as “failed to acquire key 0x152b: Permission denied in…” or “Page not cached by WP Super Cache. Could not get mutex lock.” are a sign that you may have to use file locking. Edit wp-content/wp-cache-config.php and uncomment “$use_flock = true” or set $sem_id to a different value. You can also disable file locking from the Admin screen as a last resort.
Make sure cache/wp_cache_mutex.lock is writable by the web server if using coarse file locking.
The cache folder cannot be put on an NFS or Samba or NAS share. It has to be on a local disk. File locking and deleting expired files will not work properly unless the cache folder is on the local machine.
