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(PECL memcache >= 2.0.0)
Memcache::setCompressThreshold — 开启大值自动压缩
$threshold
[, float $min_savings
] )Memcache::setCompressThreshold() 开启对于大值的自动压缩。 同样你也可以使用函数 memcache_set_compress_threshold() 。
Note:
此函数在memcache2.0.0加入。
threshold
控制多大值进行自动压缩的阈值。
min_saving
指定经过压缩实际存储的值的压缩率,支持的值必须在0和1之间。默认值是0.2表示20%压缩率。
成功时返回 TRUE
, 或者在失败时返回 FALSE
。
Example #1 Memcache::setCompressThreshold() 示例
<?php
$memcache_obj = new Memcache ;
$memcache_obj -> addServer ( 'memcache_host' , 11211 );
$memcache_obj -> setCompressThreshold ( 20000 , 0.2 );
$memcache_obj = memcache_connect ( 'memcache_host' , 11211 );
memcache_set_compress_threshold ( $memcache_obj , 20000 , 0.2 );
?>
[#1] spam at croler dot net [2013-11-25 15:41:15]
The strangest thing is that you don't supply a server as parameter to setCompressThreshold(), so the value should be related to the memcache module, not the server itself. However it's required that you have added a server before you can set compress threshold. The documentation does not specify if the servers that are added after the call to this function will have the set value. I would test it and post, but since it's not documented the behavior could change.
So if you want to be sure -> set the threshold every time you add a server.