前期准备 PHP http://windows.php.net/download WinCache Extension for PHP URL:http://sourceforge.net/projects/wincache/?source=typ_redirect Features: PHP 5.2 and PHP 5.3 and PHP 5.4 and PHP 5.5 and PHP 5.6 support Configurable file cache Configurable PHP…
Design and implement a data structure for Least Frequently Used (LFU) cache. It should support the following operations: get and put. get(key) - Get the value (will always be positive) of the key if the key exists in the cache, otherwise return -1.pu…
Design and implement a data structure for Least Recently Used (LRU) cache. It should support the following operations: get and set. get(key) - Get the value (will always be positive) of the key if the key exists in the cache, otherwise return -1. set…
create sequence name increment by x //x为增长间隔 start with x //x为初始值 maxvalue x //x为最大值 minvalue x //x为最小值 cycle //循环使用,到达最大值或者最小值时,从新建立对象 cache x //制定存入缓存(也就是内存)序列值的个数 序列是一数据库对象,利用它可生成唯一的整数.一般使用序列自动地生成主码值.一个序列的值是由特别的Oracle程序自动生成.如果不设定cycle循环的话,每一个序列号是唯…
题目简述: Design and implement a data structure for Least Recently Used (LRU) cache. It should support the following operations: get and set. get(key) - Get the value (will always be positive) of the key if the key exists in the cache, otherwise return -…
linux 存储子系统作为最为复杂的子系统之一,拥有很深的模块栈(如图),其中很多模块又有自己的缓存功能(如下图).实际应用中,用户下发的数据停留在哪个缓存中,是否已经写入磁盘,这些操作对用户来说是个黑盒.如何确保数据已经写入磁盘,可以安全的复位或掉电设备,是用户比较关心的话题. linux IO cache stack中,除了上图中的page cache, inode cache, dir cache, buffer cache,还有fs journal.disk cache2种主要的缓存…