Příručka:Databázová tabulka objectcache
↑ Manuál:Obsah | MediaWiki schéma databáze | Tabulka objectcache |
Verze MediaWiki: | ≥ 1.3 |
The objectcache table is the default backend for the Main Stash service, and is also used by a small number of high-impact cache operations as fallback when no other cache backend is configured (e.g. Memcached ). Its content can be safely deleted and excluded from backups as it will be regenerated when needed.
See Manual:Object cache for how this cache is used and how it can be configured.
Pole
keyname
Unique identifier of the cached object. e.g. <instance>:user:id:<userid>
value
Cached object.
exptime
Date the cache entry should be expired (in seconds), and therefore removed.
modtoken
Verze MediaWiki: | ≥ 1.37 |
?
flags
Verze MediaWiki: | ≥ 1.37 |
?
Přehled změn ve schématu tabulky
Verze MediaWiki: | ≥ 1.37 Gerrit change 666780 |
DESCRIBE objectcache;
+----------+------------------+------+-----+-------------------+-------+ | Field | Type | Null | Key | Default | Extra | +----------+------------------+------+-----+-------------------+-------+ | keyname | varbinary(255) | NO | PRI | | | | value | mediumblob | YES | | NULL | | | exptime | binary(14) | NO | MUL | NULL | | | modtoken | varbinary(17) | NO | | 00000000000000000 | | | flags | int(10) unsigned | YES | | NULL | | +----------+------------------+------+-----+-------------------+-------+
Verze MediaWiki: | 1.36 Gerrit change 636049 |
DESCRIBE objectcache;
+---------+----------------+------+-----+---------+-------+ | Field | Type | Null | Key | Default | Extra | +---------+----------------+------+-----+---------+-------+ | keyname | varbinary(255) | NO | PRI | | | | value | mediumblob | YES | | NULL | | | exptime | binary(14) | NO | MUL | NULL | | +---------+----------------+------+-----+---------+-------+
Verze MediaWiki: | 1.10 – 1.35 |
DESCRIBE objectcache;
+---------+----------------+------+-----+---------+-------+ | Field | Type | Null | Key | Default | Extra | +---------+----------------+------+-----+---------+-------+ | keyname | varbinary(255) | NO | PRI | | | | value | mediumblob | YES | | NULL | | | exptime | datetime | YES | MUL | NULL | | +---------+----------------+------+-----+---------+-------+
Verze MediaWiki: | 1.3 – 1.9 |
DESCRIBE objectcache;
+---------+------------------+------+-----+---------+-------+ | Field | Type | Null | Key | Default | Extra | +---------+------------------+------+-----+---------+-------+ | keyname | char(255) binary | NO | PRI | NULL | | | value | mediumblob | YES | | NULL | | | exptime | datetime | YES | MUL | NULL | | +---------+------------------+------+-----+---------+-------+