Flush cache of individual node when updated? Is there any way to have an individual node's cache flushed if it gets updated? (instead of having to flush drupal's entire cache to show the changes to anonymous users immediately? (Rules or a module maybe?)
If you are using node_save, cache for the particular node will be cleared automatically. If you are using any other method to save the node then use the following,

entity_get_controller('node')-&gt;resetCache(array($node-&gt;nid));