Memcache::setCompressThreshold

    (PECL memcache >= 2.0.0)

    Memcache::setCompressThreshold — 开启大值自动压缩

    说明

    Memcache::setCompressThreshold(int $threshold, float $min_savings = ?): bool

    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()。

    注意:

    此函数在 memcache 2.0.0 加入。

    参数

    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。

    返回值

    成功时返回 true， 或者在失败时返回 false。

    示例

    示例 #1 Memcache::setCompressThreshold() 示例

    <?php

    /* OO API */

    $memcache_obj = new Memcache;
    $memcache_obj->addServer('memcache_host', 11211);
    $memcache_obj->setCompressThreshold(20000, 0.2);

    /* procedural API */

    $memcache_obj = memcache_connect('memcache_host', 11211);
    memcache_set_compress_threshold($memcache_obj, 20000, 0.2);

    ?>

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    用户贡献的备注 1 note

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    spam at croler dot net
    10 years ago
    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.
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