BLOCK_NO_CACHE

The block should not get cached. This setting should be used:

  • for simple blocks (notably those that do not perform any db query),

where querying the db cache would be more expensive than directly generating the content.

  • for blocks that change too frequently.

drupal/modules/block/block.module, line 39

<?php
define('BLOCK_NO_CACHE', -1)
?>