Manual:Objectcache table

The objectcache table, sometimes named the mw_objectcache table, is used for a few generic cache operations if not using .

Its content can be deleted and excluded from backups as it will be regenerated when needed.

keyname
Unique identifier of the cached object. e.g. :user:id:

value
Cached object.

exptime
Date the cache entry should be expired, and therefore removed.

Schema summary
DESCRIBE objectcache; +-+--+--+-+-+---+ +-+--+--+-+-+---+ +-+--+--+-+-+---+
 * Field  | Type             | Null | Key | Default | Extra |
 * keyname | varbinary(255)  | NO   | PRI | NULL    |       |
 * value  | mediumblob       | YES  |     | NULL    |       |
 * exptime | datetime        | YES  | MUL | NULL    |       |

DESCRIBE objectcache; +-+--+--+-+-+---+ +-+--+--+-+-+---+ +-+--+--+-+-+---+
 * Field  | Type             | Null | Key | Default | Extra |
 * keyname | char(255) binary | NO  | PRI | NULL    |       |
 * value  | mediumblob       | YES  |     | NULL    |       |
 * exptime | datetime        | YES  | MUL | NULL    |       |