Comments on: WP Super Cache http://mjtsai.com/blog/2008/07/02/wp-super-cache/ Wed, 10 Mar 2010 14:04:04 -0800 http://wordpress.org/?v=2.9 hourly 1 By: Marco.S http://mjtsai.com/blog/2008/07/02/wp-super-cache/comment-page-1/#comment-532436 Marco.S Fri, 11 Dec 2009 14:10:58 +0000 http://mjtsai.com/blog/?p=1748#comment-532436 Personally I switched to W3 Total Cache. For me is a good alternative, also installed Php Speedy. For the moment I'm satisfied with the result. Personally I switched to W3 Total Cache. For me is a good alternative, also installed Php Speedy. For the moment I'm satisfied with the result.

]]> By: Jon Daley http://mjtsai.com/blog/2008/07/02/wp-super-cache/comment-page-1/#comment-532373 Jon Daley Thu, 10 Dec 2009 15:57:22 +0000 http://mjtsai.com/blog/?p=1748#comment-532373 I upgraded supercache this morning and verified that the latest version also doesn't cache RSS feeds, though it has an option to disable caching, which would imply it would cache the feeds if you left that option unset....? I upgraded supercache this morning and verified that the latest version also doesn't cache RSS feeds, though it has an option to disable caching, which would imply it would cache the feeds if you left that option unset....?

]]> By: Jon Daley http://mjtsai.com/blog/2008/07/02/wp-super-cache/comment-page-1/#comment-532297 Jon Daley Wed, 09 Dec 2009 22:00:22 +0000 http://mjtsai.com/blog/?p=1748#comment-532297 I am working on a similar issue for a customer who is having huge CPU loads with a tiny wordpress installation due to the feeds not being cached with super-cache 0.9.6.1. I did see some notes a newer release of super-cache that mentioned RSS feeds, so perhaps the author has finally gotten around to caching feeds (though I wonder if the comments about "stale" feeds are due to a bug in a later release of super-cache). I used your notes to help solve my problem, with these additions: I modified the root .htaccess to redirect /feed /?feed=rss and /?feed=rss2 to /feed/ so no php code is needed for any of those accesses. I also added another bit to the feed/.htaccess to allow the compressed feeds to output with the right mime type too. For my server, I had to use ForceType rather than just AddType: <Files *.gz> ForceType application/rss+xml </Files> <Files *.html> ForceType application/rss+xml </Files> Thanks for your help though, it was a good start on getting the load issues under control. I am working on a similar issue for a customer who is having huge CPU loads with a tiny wordpress installation due to the feeds not being cached with super-cache 0.9.6.1. I did see some notes a newer release of super-cache that mentioned RSS feeds, so perhaps the author has finally gotten around to caching feeds (though I wonder if the comments about "stale" feeds are due to a bug in a later release of super-cache).

I used your notes to help solve my problem, with these additions:
I modified the root .htaccess to redirect /feed /?feed=rss and /?feed=rss2 to /feed/ so no php code is needed for any of those accesses.

I also added another bit to the feed/.htaccess to allow the compressed feeds to output with the right mime type too.
For my server, I had to use ForceType rather than just AddType:

<Files *.gz>
ForceType application/rss+xml
</Files>
<Files *.html>
ForceType application/rss+xml
</Files>

Thanks for your help though, it was a good start on getting the load issues under control.

]]> By: Scott http://mjtsai.com/blog/2008/07/02/wp-super-cache/comment-page-1/#comment-528868 Scott Mon, 02 Nov 2009 09:06:39 +0000 http://mjtsai.com/blog/?p=1748#comment-528868 Hmm, well for some reason I haven't applied anything that you posted but my feeds ARE stale for logged-out users when WP Super Cache is enabled. As soon as I disable caching, the feeds get up to date. Any idea why this might be happening? Hmm, well for some reason I haven't applied anything that you posted but my feeds ARE stale for logged-out users when WP Super Cache is enabled. As soon as I disable caching, the feeds get up to date. Any idea why this might be happening?

]]> By: Michael Tsai http://mjtsai.com/blog/2008/07/02/wp-super-cache/comment-page-1/#comment-518899 Michael Tsai Mon, 14 Sep 2009 19:44:05 +0000 http://mjtsai.com/blog/?p=1748#comment-518899 Scott: is_feed() is described in the post. Most users don't have stale feeds because without my patch the feeds aren't (super) cached. Scott: is_feed() is described in the post. Most users don't have stale feeds because without my patch the feeds aren't (super) cached.

]]> By: Scott http://mjtsai.com/blog/2008/07/02/wp-super-cache/comment-page-1/#comment-518859 Scott Mon, 14 Sep 2009 09:35:07 +0000 http://mjtsai.com/blog/?p=1748#comment-518859 Actually, because of the line in the last code snippet in wp-cache-phase2.php that checks if( is_feed() ), shouldn't WP Super Cache not attempt to cache feeds? If so, I don't understand what it is about WP Super Cache that is making my feeds (listed above) stale. Actually, because of the line in the last code snippet in wp-cache-phase2.php that checks if( is_feed() ), shouldn't WP Super Cache not attempt to cache feeds? If so, I don't understand what it is about WP Super Cache that is making my feeds (listed above) stale.

]]> By: Scott http://mjtsai.com/blog/2008/07/02/wp-super-cache/comment-page-1/#comment-518855 Scott Mon, 14 Sep 2009 09:18:24 +0000 http://mjtsai.com/blog/?p=1748#comment-518855 Michael, thanks for your response. Where in the Super Cache plugin does the if (is_feed()) code snippet go? I imagine somewhere in wp_cache.php? BTW, I couldn't imagine that this is a widespread issue for all users of WP Super Cache... or is it? do they all have stale feeds? Why has this not been fixed in the plugin itself? Michael, thanks for your response. Where in the Super Cache plugin does the if (is_feed()) code snippet go? I imagine somewhere in wp_cache.php?

BTW, I couldn't imagine that this is a widespread issue for all users of WP Super Cache... or is it? do they all have stale feeds? Why has this not been fixed in the plugin itself?

]]> By: Michael Tsai http://mjtsai.com/blog/2008/07/02/wp-super-cache/comment-page-1/#comment-518667 Michael Tsai Sat, 12 Sep 2009 14:18:26 +0000 http://mjtsai.com/blog/?p=1748#comment-518667 Scott: As far as I am aware, it still works with WordPress 2.8.4 and WP Super Cache 0.9.6.1. Scott: As far as I am aware, it still works with WordPress 2.8.4 and WP Super Cache 0.9.6.1.

]]> By: Scott http://mjtsai.com/blog/2008/07/02/wp-super-cache/comment-page-1/#comment-518577 Scott Fri, 11 Sep 2009 21:24:57 +0000 http://mjtsai.com/blog/?p=1748#comment-518577 And by second/third code fragments, I actually meant the last few code fragments where you add to the Super Cache code. Thanks! And by second/third code fragments, I actually meant the last few code fragments where you add to the Super Cache code. Thanks!

]]> By: Scott http://mjtsai.com/blog/2008/07/02/wp-super-cache/comment-page-1/#comment-518576 Scott Fri, 11 Sep 2009 21:24:00 +0000 http://mjtsai.com/blog/?p=1748#comment-518576 It looks as if my RSS/Atom feeds aren't updated when viewed in IE or in many RSS readers, but in FF they work fine. I haven't yet put the second or third code fragments into my WP-Supercache plugin, but I wanted to check/verify that that code is still relevant a little over a year later and might fix my problem. Feeds I'm talking about are at http://www.studlife.com/feed/atom/ or http://www.studlife.com/news/feed/atom/. This is very frustrating, because RSS is not at all reliable for my site right now - hoping you can help. Thanks! It looks as if my RSS/Atom feeds aren't updated when viewed in IE or in many RSS readers, but in FF they work fine. I haven't yet put the second or third code fragments into my WP-Supercache plugin, but I wanted to check/verify that that code is still relevant a little over a year later and might fix my problem. Feeds I'm talking about are at http://www.studlife.com/feed/atom/ or http://www.studlife.com/news/feed/atom/. This is very frustrating, because RSS is not at all reliable for my site right now - hoping you can help. Thanks!

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