摘要： 在平时的mysql文档学习中我们经常会看到这么一句话：MySQL tries to leave space so that future inserts do not incur un-necessary page splits (and thus higher IO cost). In an "ideal" world, MySQL tries to keep the index pages at 15/16-th full, but depending on insert order, this fill factor can be as low as 1/2大致含义就 阅读全文