All of you should vote for this bug-/ featurerequest-reports:
https://tracker.vbulletin.com/vbulle...sues/VBV-17825
https://tracker.vbulletin.com/vbulle...ssues/VBV-5356
Delete the cache always rise server-usage and will slow down the page. Means it must be possible to modify the content on presentationlayer and not behind the scenes. Right now ...
1. cache have to be cleaned (fully or like I do/ did for the post with bbcode in it) = first database action
2. modify the post content (all in php and only a little serverpower needed)
3. build new cache (for the one post or in this mod fully) = second database action
If the cache emtied fully the entire cache of all post, stylevars, styles ... builds up every pageview.