Makes sure your entire website is fully cached at all times. Can be used when performing website maintenance/construction.
When there is no cache for some page, a script is executed which determines the size of the cache directory and compares it to the limit you specify. If the limit is not reached, a background process is triggered getting the contents of every blog item (post, page, category, tag, home) so that new cache is generated. After all pages have been called, the process is terminated.
All pages are called within 1-2 second intervals. So if your blog has 100 pages, its full cache will be generated in about 100-200 seconds.