平面文件缓存，零停机时间(Flat file caching with zero downtime)

 每次将新内容发布到我的网站时，我都会为我网站的前5页重新生成平面文件缓存。 这很好用，大大减少了服务器负载。 
 
 问题是，每次重新生成文件缓存时，我都会看到流量略有下降，大概是因为浏览网站的~2500人中有一小部分但不可忽略的百分比看到了一半生成的页面。 
 
 我想知道在php中生成这些缓存页面的更好方法是没有任何用户看到半写页面的风险。 
 
 编辑： 
 
 以下是我的.htaccess文件中确定是否加载缓存文件的部分： 
 
RewriteCond %{HTTP_COOKIE} (user)
RewriteRule (.*)? - [S=3] # Skip the below 2 lines if the above test passes
RewriteRule ^$ app/webroot/cache_static_html/cache_static_popular_results_1.php [L]
RewriteRule ^popular/page:([2-9])$ app/webroot/cache_static_html/cache_static_popular_results_$1.php [L]

Every time new content is posted to my site I regenerate the flat file cache for the first 5 pages of my site. This works great and has greatly reduced server load.
 
The problem is that every time the file cache is regenerated I see a slight dip in traffic, presumably because some small, but not negligible, percentage of the ~2500 people browsing the site see half generated pages.
 
I'm wondering what a better method for generating these cached pages in php would be without any risk of users seeing half-written pages.
 
EDIT:
 
Here is the portion of my .htaccess file that determines whether to load a cached file:
 
RewriteCond %{HTTP_COOKIE} (user)
RewriteRule (.*)? - [S=3] # Skip the below 2 lines if the above test passes
RewriteRule ^$ app/webroot/cache_static_html/cache_static_popular_results_1.php [L]
RewriteRule ^popular/page:([2-9])$ app/webroot/cache_static_html/cache_static_popular_results_$1.php [L]

原文：https://stackoverflow.com/questions/8335631