07 2018 档案
摘要:package com.kaibing.thread; import java.util.concurrent.locks.Condition; import java.util.concurrent.locks.Lock; import java.util.concurrent.locks.ReentrantLock; public class ABCAlternate { pu...
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摘要:package com.kaibing.design; import java.util.concurrent.locks.Condition; import java.util.concurrent.locks.Lock; import java.util.concurrent.locks.ReentrantLock; public class ProductorAndCustomerLo...
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摘要:package com.kaibing.design; public class ProductorAndCustomer { public static void main(String[] args) { Clerk clerk = new Clerk(); Productor productor = new Productor(clerk);...
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摘要:查询优化: 定位问题: 1.记录慢查询 show profile set profiling = 1 开启 show profiles show profile for query 表ID show status :计数器 show processlist :记录线程 explain/desc :分
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摘要:安装之前先检查一下系统有没有自带open-jdk 命令: rpm -qa |grep java rpm -qa |grep jdk rpm -qa |grep gcj 如果没有输入信息表示没有安装。 如果安装可以使用rpm -qa | grep java | xargs rpm -e --nodep
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