MemcachedIncrementKeyGroup (Function)

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MemcachedIncrementKeyGroup (Function)

In french: MemcachedIncrémenteGroupeClé

Increments the value associated with a key on a group of servers.

Example

MemcachedIncrementKeyGroup(memConnection, "MyApp", "counter", 1, 0, 60s)

Syntax

<Result> = MemcachedIncrementKeyGroup(<Connection> , <Group> , <Key> [, <Increment> [, <Initial value> [, <Expiration>]]])

<Result>: Integer

Previous key value.

<Connection>: memcachedConnection variable

Name of memcachedConnection variable corresponding to the connection to the Memcached cache.

<Group>: Character string (with quotes)

Key section used to choose the server that will be used.

<Key>: Character string (with quotes)

Key to use.

<Increment>: Optional integer

Increment value (1 by default).

<Initial value>: Optional integer

Initial key value if the sought key does not exist. Indeed, the sought key is automatically created if it does not exist and its value is set to <Initial Value>.
CAUTION: to use this parameter, the Memcached server must use the binary communication protocol (the ..BinaryProtocol property of memcachedConnection variable must correspond to True).
An error is returned if this parameter is not specified.

<Expiration>: Integer or optional duration

Duration during which the key is stored in the cache. This duration is expressed in seconds. This duration can correspond to:
an integer corresponding to the number of seconds,
a Duration variable.
the direct indication of duration ('10s' for example).
This duration is set to 0 by default. In this case, the duration is unlimited: if there is not enough memory, the oldest keys are deleted.

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