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1. jebus
   Member
   Posted 3 years ago #

   I'm trying to resolve my high CPU usage on my webhost. I've got wp-supercache installed and the expire time set to 86400 (24hrs). I'm just trying to cache as much as possible right now so I can reduce the load.

   My problem is that the homepage serves as a cached file for a few minutes, then shows another dynamic page generated and new timestamp. The pages are definitely caching, since I can see them in the cache directory. Also, I can see an index.html file in the cache directory, but if I view it directly, I can see it has an older timestamp than the version I see in my browser.

   For instance, if I load the homepage in my browser and view source, I see this footer:

   <!-- Dynamic Page Served (once) in 0.348 seconds -->
   <!-- Cached page generated by WP-Super-Cache on 2009-02-20 15:37:00 -->
   <!-- Compression = gzip -->

   If I FTP to the cache directory and decompress the index.html.gz file, I shows this footer:

   <!-- Dynamic Page Served (once) in 0.277 seconds -->
   <!-- Cached page generated by WP-Super-Cache on 2009-02-20 14:56:48 -->
   <!-- Compression = gzip -->

   Obviously, this is from forty minutes earlier. So, the page is cached, but just served intermittently.

   Also, my feeds don't seem to cache. At least, I don't see them in /wp-content/cache, and if I check my site in http://ismyblogworking.com/ it says the feed doesn't support caching. But, we get tons of hits on the feed, so I really need to cache that as well.

   Any help would be appreciated. Thanks.

2. jebus
   Member
   Posted 3 years ago #

   Also getting these errors in the http error_log:

   mod_rewrite: maximum number of internal redirects reached. Assuming configuration error. Use 'RewriteOptions MaxRedirects' to increase the limit if neccessary.

3. pemo
   Member
   Posted 3 years ago #

   I have had wp super cache plug in wp for a year but had to deactivate it because it wouldnt worki with old wp. I upgraded wp to 2.7.1 on weekend & activated wp supercache & my rss feed broken now. I couldnt even deactivate supercache thru firefox 3 without getting white screen for my whole blog & managed finally to deactivate on Google Chrome. Rss still broken so have been trying to delete wp supercache file but immediately get white screen & blog disappears. This plugin is insidious????? Anyone can offer any suggestions so that I can get rid of it totally without losing my blog? My rss feed is not validating again http://www.astramatch.com/blog/wp-rss2.php . Please help

4. jebus
   Member
   Posted 3 years ago #

   Anybody have any idea why I'm not seeing the cached homepage delivered, even though it's present in the cache directory?

   Also, what's up with caching the feed?

   Any ideas how I can troubleshoot this?

   Thanks.

5. jebus
   Member
   Posted 3 years ago #

   By the way, I'm logging out and even deleting all cookies from the domain in question before reloading the page.

6. Bryan84
   Member
   Posted 3 years ago #

   Is it possible to cache feeds? A run on http://www.ismyblogworking.com/www.bryanchung.sg shows that my "Your feed doesn't support caching (no 304 response)."

7. Donncha O Caoimh
   Member
   Posted 3 years ago #

   Bryan84 - it is cached by the server. 304 is the browser cache. Use Feedburner to make your feed respect 304 checks. (Google for "304 http" or something if you want to know more)

8. Bryan84
   Member
   Posted 3 years ago #

   Thanks donncha :)

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