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WP Super Cache 0.7 - the dupe content killerAugust 27

WordPress.org user, “definitelynot” discovered a bug in the WordPress plugin, WP Super Cache that could expose blogs to duplicate content penalties. Unfortunately this affects every blog that uses the plugin in “ON” or full “Super Cache” mode, and has URLs that end with the “/” (forward slash) character. If the plugin is on “half on” mode, you’ll be fine.

The problem is that an anonymous user might visit a legitimate URL, ending with a slash, the plugin then creates a static file out of that page, which is then used when people visit the same URL. Unfortunately if someone links to that URL without the ending slash, a visiting browser or search engine bot won’t be redirected to the proper URL, they’ll be served the static html file.

For example:

  1. John visits the URL /2007/05/23/why-the-nurses-cant-go-on-strike/ on my site. WP Super Cache creates a html file of that page.
  2. In his enthusiasm for that post, John p

Howto: Twitter sms notification for Meteor and VodafoneAugust 26

A few weeks ago Twitter annoyed a lot of European users when they stopped sending sms notifications to their users. I never really used that facility so I didn’t miss it but many Tweeters did. Outrage and blue murder were spoken of in the same sentence. People marched in the streets, there were riots.

OK, maybe not, but it annoyed a few prolific Tweeters and I wondered aloud if I could make Tweet Tweet send me sms notifications when I got replies or direct messages. After quite a bit of testing and playing around with Meteor’s website I’m glad to say I cracked it. I added hooks to my plugin for other plugins to latch on to, and wrote a small bit of code that logs in to Meteor.ie and uses their free web text to notify me of replies or direct messages.

Following on from that success, Jason Roe added code so Irish Vodafone customers could get sms notifications too!

So, if you really miss the sms notifications from Twitter, and you’re an Irish Meteor or Vodafone customer, download Tweet Tweet, install it in your WordPress blog and enjoy getting those sms notifications from Twitter again

WP Super Cache 0.6.7August 20

WP Super Cache is a plugin for WordPress that creates cached copies of your blog posts and pages, making your site much faster to serve. It’s also ideal for coping with sudden surges of traffic.

I released a new version of the plugin this morning. This is a bugfix release:

  • Mike Beggs contributed a number of changes:
    1. Better support for Win32 NTFS
    2. Better use of the “Vary” header so proxy servers won’t cache the wrong page. If you see leakage of comment details on posts this will fix that problem.
    3. WP-Cron handles cleanup of expired cache files in the background now.
    4. Disable mod_deflate if it’s running as it sometimes tries to compress gzipped files. Remove wp-content/cache/.htaccess for that file to be updated.
  • Lazy and Otto both recommended using get_comment() instead of the depreciated get_commentdata()
  • A basic “uninstall” function has been added to remove some of the files the plugin creates. It’s called when you deactivate the plugin.
  • PHP running as a CGI doesn’t support apache_request_headers() so that’s been added too.
  • And I almost forgot, the admin page received a slight makeover.

Get the plugin from the download page!

Tweet Tweet 0.1 for WordPressAugust 14

I’m a big fan of Twitter. It serves as a useful tool connecting people who might never meet, and also as a vital means of communication for those who work at home or in solitary conditions.

The one huge and uncomfortable problem I see with Twitter is, “What happens to the conversation if Twitter fails?” What will you do if Twitter goes out of business tomorrow? Where will all your conversations, all the links you posted, and received from your friends be? That’s why I wrote Tweet Tweet.

Tweet Tweet is a plugin for WordPress that will archive your tweets, and the tweets of everyone you follow, plus replies you receive from strangers, and direct messages too. All these tweets will be stored safely in your database.

There is a simple “review pane” where you can see the latest tweets and go back in history but it’s very basic. The primary aim of this plugin is to ensure that your conversations are safe.

Tweet Tweet

The plugin has been tested by a number of users, but it uses jQuery and AJAX techniques for the review pane so I’d love to hear if it works for you.

Please, do not hack the plugin to poll Twitter more than once every 90 s

WordPress at No. 10August 12

You may have heard that the official site of the British Prime Minister’s Office at number10.gov.uk launched earlier today. The great news is that it’s running WordPress, but what really excited me is the fact that the site is also using WP Super Cache.

The site was initially very slow, but once the cached static files were in place, it just zipped along! Three cheers for caching and everyone who has contributed to WP Cache and WP Super Cache! :)

I wonder if Gordon Brown will be looking at his Dashboard? *Wave*

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