<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[coding_365的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/coding_365</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; coding_365]]></copyright><item><title><![CDATA[Linux常见的五种I/O模型]]></title><link>https://blog.youkuaiyun.com/coding_365/article/details/157217454</link><guid>https://blog.youkuaiyun.com/coding_365/article/details/157217454</guid><author>coding_365</author><pubDate>Wed, 21 Jan 2026 16:12:46 +0800</pubDate><description><![CDATA[摘要：阻塞I/O会挂起线程直到操作完成，非阻塞I/O立即返回结果或错误码。I/O复用使用少量线程同时监视多个socket，仅处理就绪状态。信号驱动是内核主动通知数据到达的机制，异步I/O则完全非阻塞，操作完成后通知进程。这四种I/O模型提供了不同级别的并发处理能力。]]></description><category></category></item><item><title><![CDATA[Redis]]></title><link>https://blog.youkuaiyun.com/coding_365/article/details/145017472</link><guid>https://blog.youkuaiyun.com/coding_365/article/details/145017472</guid><author>coding_365</author><pubDate>Wed, 08 Jan 2025 20:59:15 +0800</pubDate><description><![CDATA[SETEX key seconds value   //设置指定的key值，并设置key的过期时间。HSET key field value  // 将哈希表中key的field设置为value。SETNX key value    //只有在key不存在时设置key的值。HGET key field     //获取存储在key中field字段。HDEL key field     //删除存储在key中的字段。SMEMBERS key      //返回集合中的所有元素。]]></description><category></category></item><item><title><![CDATA[Mysql(4)]]></title><link>https://blog.youkuaiyun.com/coding_365/article/details/144966137</link><guid>https://blog.youkuaiyun.com/coding_365/article/details/144966137</guid><author>coding_365</author><pubDate>Mon, 06 Jan 2025 16:10:23 +0800</pubDate><description><![CDATA[select * from user where (job,salary) in (select job,salary from user where name = '鹿杖客' or name = '宋远桥');select * from user where salary > any(select salary where id = (select id from dept where name = '研发部'));select 字段列表 from 表1 inner join 表2 on 连接条件;]]></description><category></category></item><item><title><![CDATA[Mysql(3)]]></title><link>https://blog.youkuaiyun.com/coding_365/article/details/144959846</link><guid>https://blog.youkuaiyun.com/coding_365/article/details/144959846</guid><author>coding_365</author><pubDate>Mon, 06 Jan 2025 11:31:44 +0800</pubDate><description><![CDATA[alter user '用户名'@'主机名' identified with mysql_native_password by '新密码';create user '用户名'@'主机名' identified by '密码';revoke 权限列表 on 数据库名.表名 from '用户名'@'主机名'grant 权限列表 on 数据库名.表名 to '用户名'@'主机名';show grants for '用户名'@'主机名'drop user '用户名'@'主机名';任意主机用‘%’表示。]]></description><category></category></item><item><title><![CDATA[Mysql(2)]]></title><link>https://blog.youkuaiyun.com/coding_365/article/details/144943755</link><guid>https://blog.youkuaiyun.com/coding_365/article/details/144943755</guid><author>coding_365</author><pubDate>Sun, 05 Jan 2025 12:06:21 +0800</pubDate><description><![CDATA[insert into 表名（字段1，字段2，字段3） values(值1，值2，值3)，(值1，值2，值3)，(值1，值2，值3);insert into 表名 values(值1，值2，值3),(值1，值2，值3)，(值1，值2，值3)，(值1，值2，值3);//age升序，id降序。]]></description><category></category></item><item><title><![CDATA[Mysql(1)]]></title><link>https://blog.youkuaiyun.com/coding_365/article/details/144934223</link><guid>https://blog.youkuaiyun.com/coding_365/article/details/144934223</guid><author>coding_365</author><pubDate>Sat, 04 Jan 2025 19:53:59 +0800</pubDate><description><![CDATA[数值类型，tinyint,smallint,mediumint,int,bigint。alter table 表名 add 类型（长度） [comment ''];alter table 表名 change 旧字段 新字段 类型长度;name varchar(32) comment '姓名',gender varchar(1) comment '性别'字段1 字段1类型[comment 字段1 注释],字段2 字段2类型[comment 字段2 注释],字段3 字段3类型[comment 字段3 注释],]]></description><category></category></item><item><title><![CDATA[GPLT-L1-080 乘法口诀数列（Java）]]></title><link>https://blog.youkuaiyun.com/coding_365/article/details/127005449</link><guid>https://blog.youkuaiyun.com/coding_365/article/details/127005449</guid><author>coding_365</author><pubDate>Fri, 23 Sep 2022 10:14:46 +0800</pubDate><description><![CDATA[团队程序设计练习天梯赛L1-080 乘法口诀数列(Java)]]></description><category></category></item><item><title><![CDATA[团队程序设计天梯赛——L2-037 包装机(c++)]]></title><link>https://blog.youkuaiyun.com/coding_365/article/details/125475803</link><guid>https://blog.youkuaiyun.com/coding_365/article/details/125475803</guid><author>coding_365</author><pubDate>Sun, 26 Jun 2022 23:01:39 +0800</pubDate><description><![CDATA[团队程序设计天梯赛L2-037 包装机(c++)]]></description><category></category></item><item><title><![CDATA[团队程序设计天梯赛L1-039 古风排版（C++）]]></title><link>https://blog.youkuaiyun.com/coding_365/article/details/125416235</link><guid>https://blog.youkuaiyun.com/coding_365/article/details/125416235</guid><author>coding_365</author><pubDate>Wed, 22 Jun 2022 20:36:54 +0800</pubDate><description><![CDATA[团队程序设计天梯赛L1-039 古风排版]]></description><category></category></item></channel></rss>