Memcached::casByKey

(PECL memcached >= 0.1.0)

Memcached::casByKeyCompare and swap an item on a specific server

Опис

public bool Memcached::casByKey ( float $cas_token , string $server_key , string $key , mixed $value [, int $expiration ] )

Memcached::casByKey() is functionally equivalent to Memcached::cas(), except that the free-form server_key can be used to map the key to a specific server. This is useful if you need to keep a bunch of related keys on a certain server.

Параметри

cas_token

Unique value associated with the existing item. Generated by memcache.

server_key

The key identifying the server to store the value on or retrieve it from. Instead of hashing on the actual key for the item, we hash on the server key when deciding which memcached server to talk to. This allows related items to be grouped together on a single server for efficiency with multi operations.

key

Ключ, під яким зберігається значення.

value

Значення для зберігання.

expiration

The expiration time, defaults to 0. See Expiration Times for more info.

Значення, що повертаються

Повертає TRUE в успішному випадку або FALSE в разі помилки. The Memcached::getResultCode() will return Memcached::RES_DATA_EXISTS if the item you are trying to store has been modified since you last fetched it.

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