Batcache怎么设置缓冲时间？

WordPress开启Batcache后好处太多了，缓存从内存访问实在是快啊，也不担心Nginx WP Super Cache URL重写的麻烦，也不会出现Memcached与WP Super Cache共用错误的问题。Batcache默认的缓存时间是300s，也可以进行调整。

advanced-cache.php文件中大致43行：

var $max_age =  300; // Expire batcache items aged this many seconds (zero to disable batcache)

修改为

var $max_age =  3600; // Expire batcache items aged this many seconds (zero to disable batcache)

设置之后就可以看到了页面源码：

<!--
    generated in 0.239 seconds
    25783 bytes batcached for 3600 seconds
-->

除此之外，还可以通过wp-config.php中设置：

// Custom Batcache settings for the end of wp-config.php
global $batcache;
if ( is_object($batcache) ) {
     $batcache->max_age = 3600;  // Seconds the cached render of a page will be stored
     $batcache->seconds = 3600;  // The amount of time at least 2 people are required to visit your page for a cached render to be stored.
}
// End custom Batcache settings