奔跑的狮子猫

There are three basic steps to SQL tuning: 1.Figure out which execution plan (path to reach the data your SQL statement demands) you are getting. 2.Change SQL or the database to get a chosen e...

For this reason, the caching algorithm I'm describing is often called an LRU caching algorithm. 缓存算法经常被称为LRU缓存算法。最不常用，最冷的数据会自动的从缓存中falls off； The theory is that the hottest data will cycle to the he...