除此之外innodb 引擎结提供了 入结存 插 (insert buffer)、二次写(double write)、自适结哈西索引(adaptive hash index)、结结(read ahead)等高性能技 结。
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The number of double write operations that have been performed.
已经执行的双写操作的数量。
The number of pages that have been written for double write operations.
双写操作执行的页的数量。
Write a standard lock plus "double check" to create a critical section around a variable access.
写一个标准的lock,在访问变量的前后创建临界区,要有“双重检查”。
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