Manual:Objectcache table/ja

objectcache テーブルは、 を使用していない場合に、少数の汎用キャッシュ操作のために使用されます. 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 (in seconds), and therefore removed.

スキーマの要約
+-++--+-+-+---+ +-++--+-+-+---+ +-++--+-+-+---+
 * Field  | Type           | Null | Key | Default | Extra |
 * keyname | varbinary(255) | NO  | PRI |         |       |
 * value  | mediumblob     | YES  |     | NULL    |       |
 * exptime | binary(14)    | NO   | MUL | NULL    |       |

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

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