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6.5. 练习 6.5. 练习 You can buy solutions to all exercises in this book as a ZIP file. 重构下面的程序用两个线程来计算总和。由于现在许多处理器有两个内核,应利用线程减少执行时间。 #include <boost/date_time/posix_time/po...
背景 mysql 主备同步是通过binlog来进行的,备库的 IO 线程从主库拉取binlog,SQL线程将拉取的binlog应用到备库,在5.6之前,备库只有一个线程应用binlog,主库的更新量大,且备库的执行效率低时,就会造成了大量从主库拉取的binlog来不及执行,因此造成了主备延迟问题。为了解决主备延迟,需要提高备库的执行效率,阿里MySQL...