[edit] Last updated: Fri, 17 May 2013

Memcached::getServerByKey

(PECL memcached >= 0.1.0)

Memcached::getServerByKey — Map a key to a server

Descrição

public array Memcached::getServerByKey ( string $server_key )

Memcached::getServerByKey() returns the server that would be selected by a particular server_key in all the Memcached::*ByKey() operations.

Parâmetros

server_key: A chave identificando o servidor aonde guardar o valor.

Valor Retornado

Returns an array containing three keys of host, port, and weight on success or FALSE on failure. Use Memcached::getResultCode() se necessário.

Exemplos

Exemplo #1 Memcached::getServerByKey() example


<?php
$m = new Memcached();
$m->addServers(array(
    array('mem1.domain.com', 11211, 40),
    array('mem2.domain.com', 11211, 40),
    array('mem3.domain.com', 11211, 20),
));

$m->setOption(Memcached::OPT_LIBKETAMA_COMPATIBLE, true);

var_dump($m->getServerByKey('user'));
var_dump($m->getServerByKey('log'));
var_dump($m->getServerByKey('ip'));
?>

O exemplo acima irá imprimir algo similar à:

array(3) {
  ["host"]=>
  string(15) "mem3.domain.com"
  ["port"]=>
  int(11211)
  ["weight"]=>
  int(20)
}
array(3) {
  ["host"]=>
  string(15) "mem2.domain.com"
  ["port"]=>
  int(11211)
  ["weight"]=>
  int(40)
}
array(3) {
  ["host"]=>
  string(15) "mem2.domain.com"
  ["port"]=>
  int(11211)
  ["weight"]=>
  int(40)
}

add a note User Contributed Notes Memcached::getServerByKey - [1 notes]

down

zhaoyong dot lc at gmail dot com ¶

1 month ago


The parameter server_key is very confusing, it's not a server key for MemCached Server, but it's key,in key-value pair which you stored in server.



<?php

$m = new Memcached;

$m->addServers(array(

    array('127.0.0.1',11212),

    array('127.0.0.1',11211)

));

for($i=0;$i<10;$i++){

    $key = 'key_'.$i;

    $m->add($key, 1);

}

for($i=0;$i<10;$i++) {

    $key = 'key_'.$i;

    $arr = $m->getServerByKey($key);

    echo ($key.":\t".$arr['port']."\n");

}

?>



key_0:  11212

key_1:  11211

key_2:  11212

key_3:  11212

key_4:  11212

key_5:  11211

key_6:  11211

key_7:  11212

key_8:  11212

key_9:  11211

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