constant DRUPAL_CACHE_CUSTOM

The block is handling its own caching in its hook_block_view().

This setting is useful when time based expiration is needed or a site uses a node access which invalidates standard block cache.

Related topics

File

drupal/core/includes/common.inc, line 175
Common functions that many Drupal modules will need to reference.

Code

const DRUPAL_CACHE_CUSTOM = -2;