On 12 May 2005, at 11:29, Karoly Negyesi wrote:

Why check_output caches for one day instead of cache_permanent?

If someone edits a node (or any piece of filtered content), the "old filtered body" is not automatically pruned from the cache. Instead, the "new filtered body" is added and the "old filtered body" is removed within 24 hours. Similarly, if a node (or any piece of filtered content) is removed from the site, its "filtered body" won't be automatically removed from the cache. Instead, we take the "lazy yet aggressive yet error-prone approach" and wipe all filtered text every once in a while. In addition, it ensures that we don't keep stale content in the cache which keeps the cache table ... *cough* ... small. (I see a quite a lot of filter cache updates on drupal.org though.) -- Dries Buytaert :: http://www.buytaert.net/