<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[派大星的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/hello__ZC</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; hello__ZC]]></copyright><item><title><![CDATA[caffeine和google-guava cache缓存使用详解和源码介绍]]></title><link>https://blog.youkuaiyun.com/hello__ZC/article/details/131426454</link><guid>https://blog.youkuaiyun.com/hello__ZC/article/details/131426454</guid><author>hello__ZC</author><pubDate>Tue, 27 Jun 2023 23:36:59 +0800</pubDate><description><![CDATA[caffeine和google-guava cache缓存使用详解和源码介绍]]></description><category></category></item><item><title><![CDATA[docker开启2375端口]]></title><link>https://blog.youkuaiyun.com/hello__ZC/article/details/122032942</link><guid>https://blog.youkuaiyun.com/hello__ZC/article/details/122032942</guid><author>hello__ZC</author><pubDate>Mon, 20 Dec 2021 00:25:34 +0800</pubDate><description><![CDATA[docker开启2375端口]]></description><category></category></item><item><title><![CDATA[docker开启2375端口]]></title><link>https://blog.youkuaiyun.com/hello__ZC/article/details/122032892</link><guid>https://blog.youkuaiyun.com/hello__ZC/article/details/122032892</guid><author>hello__ZC</author><pubDate>Mon, 20 Dec 2021 00:21:51 +0800</pubDate><description><![CDATA[docker开启2375端口

Docker开启Remote API 访问 2375端口 - hongdada - 博客园Docker常见端口 我看到的常见docker端口包括： 2375：未加密的docker socket,远程root无密码访问主机 2376：tls加密套接字,很可能这是您的CI服务器4243端口作为https://www.cnblogs.com/hongdada/p/11512901.htmldocker 开启2375端口，提供外部访问docker,idea连接服务器docker_霓虹]]></description><category></category></item><item><title><![CDATA[docker开启2375端口]]></title><link>https://blog.youkuaiyun.com/hello__ZC/article/details/122032866</link><guid>https://blog.youkuaiyun.com/hello__ZC/article/details/122032866</guid><author>hello__ZC</author><pubDate>Mon, 20 Dec 2021 00:18:44 +0800</pubDate><description><![CDATA[Docker开启Remote API 访问 2375端口 - hongdada - 博客园https://www.cnblogs.com/hongdada/p/11512901.htmldocker 开启2375端口，提供外部访问docker,idea连接服务器docker_霓虹深处-优快云博客_idea连接docker2376端口https://blog.youkuaiyun.com/qq_36850813/article/details/89924207
...]]></description><category></category></item><item><title><![CDATA[docker开启2375端口]]></title><link>https://blog.youkuaiyun.com/hello__ZC/article/details/122032813</link><guid>https://blog.youkuaiyun.com/hello__ZC/article/details/122032813</guid><author>hello__ZC</author><pubDate>Mon, 20 Dec 2021 00:15:41 +0800</pubDate><description><![CDATA[Docker开启Remote API 访问 2375端口 - hongdada - 博客园https://www.cnblogs.com/hongdada/p/11512901.htmldocker 开启2375端口，提供外部访问docker,idea连接服务器docker_霓虹深处-优快云博客_idea连接docker2376端口https://blog.youkuaiyun.com/qq_36850813/article/details/89924207
...]]></description><category></category></item><item><title><![CDATA[docker使用问题汇总]]></title><link>https://blog.youkuaiyun.com/hello__ZC/article/details/122032576</link><guid>https://blog.youkuaiyun.com/hello__ZC/article/details/122032576</guid><author>hello__ZC</author><pubDate>Mon, 20 Dec 2021 00:13:17 +0800</pubDate><description><![CDATA[docker启动出现问题解决方案]]></description><category></category></item><item><title><![CDATA[MySQL优化三：order by原理及优化实践]]></title><link>https://blog.youkuaiyun.com/hello__ZC/article/details/119455584</link><guid>https://blog.youkuaiyun.com/hello__ZC/article/details/119455584</guid><author>hello__ZC</author><pubDate>Fri, 06 Aug 2021 19:19:28 +0800</pubDate><description><![CDATA[目录



前言

建表及准备数据

根据查询case分析order by的使用

什么是filesort

优化filesort

总结

前言

order by排序是我们在MySQL中查询数据时非常常用的语句，本篇文章我们将了解order by的执行过程以及如何优化，在此之前，大家需要对索引有所了解，不了解的朋友可以参考以前写的文章MySQL优化一：索引原理

MySQL优化二：索引B+树能放多少索引指针？能放多少数据

建表及准备数据


CREATE TABLE `t1`  (
  `id` ..]]></description><category></category></item><item><title><![CDATA[MySQL优化二：索引B+树能放多少索引指针？能放多少数据]]></title><link>https://blog.youkuaiyun.com/hello__ZC/article/details/119429355</link><guid>https://blog.youkuaiyun.com/hello__ZC/article/details/119429355</guid><author>hello__ZC</author><pubDate>Thu, 05 Aug 2021 23:04:25 +0800</pubDate><description><![CDATA[在MySQL中我们的InnoDB页的大小默认是16k，当然也可以通过参数设置：
SHOW VARIABLES LIKE 'innodb_page_size';











]]></description><category></category></item><item><title><![CDATA[Spring Boot 线程池配置]]></title><link>https://blog.youkuaiyun.com/hello__ZC/article/details/106473515</link><guid>https://blog.youkuaiyun.com/hello__ZC/article/details/106473515</guid><author>hello__ZC</author><pubDate>Mon, 01 Jun 2020 15:36:44 +0800</pubDate><description><![CDATA[public class AsyncConfig implements AsyncConfigurer {

    @Bean
    public Executor taskExecutor() {
        ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
        // 设置线程池核心容量
        executor.setCorePoolSize(10);
        // 设置线程池最大容...]]></description><category></category></item><item><title><![CDATA[jenkins maven和jdk配置]]></title><link>https://blog.youkuaiyun.com/hello__ZC/article/details/105541054</link><guid>https://blog.youkuaiyun.com/hello__ZC/article/details/105541054</guid><author>hello__ZC</author><pubDate>Wed, 15 Apr 2020 18:24:46 +0800</pubDate><description><![CDATA[工具配置





环境变量配置

同jenkins服务器maven和jdk环境变量配置类似

JAVA_HOME/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.242.b08-0.el7_7.x86_64

M2_HOME/usr/local/apache-maven-3.6.3

PATH+EXTRA$M2_HOME/bin






...]]></description><category></category></item><item><title><![CDATA[nginx-gzip_static压缩文件传输]]></title><link>https://blog.youkuaiyun.com/hello__ZC/article/details/104997488</link><guid>https://blog.youkuaiyun.com/hello__ZC/article/details/104997488</guid><author>hello__ZC</author><pubDate>Fri, 20 Mar 2020 20:03:59 +0800</pubDate><description><![CDATA[https://www.cnblogs.com/zs-note/p/9556390.html
]]></description><category></category></item><item><title><![CDATA[nginx详细配置说明]]></title><link>https://blog.youkuaiyun.com/hello__ZC/article/details/104997315</link><guid>https://blog.youkuaiyun.com/hello__ZC/article/details/104997315</guid><author>hello__ZC</author><pubDate>Fri, 20 Mar 2020 19:53:54 +0800</pubDate><description><![CDATA[#nginx的工作进程的用户以及用户组， windows不需要配置
#user  nobody;
#工作进程个数，通常配置为cpu总和数
worker_processes  1;

#error_log  logs/error.log;
#error_log  logs/error.log  notice;
#error_log  logs/error.log  info;

#pid     ...]]></description><category></category></item><item><title><![CDATA[redistemplate是如何在springboot中自动配置的]]></title><link>https://blog.youkuaiyun.com/hello__ZC/article/details/103421398</link><guid>https://blog.youkuaiyun.com/hello__ZC/article/details/103421398</guid><author>hello__ZC</author><pubDate>Fri, 06 Dec 2019 14:20:24 +0800</pubDate><description><![CDATA[首先看下我们项目中一般对redistemplate的配置


	@Bean(name = "redisTemplate")
	public RedisTemplate&lt;String, Object&gt; redisTemplate(JedisConnectionFactory jedisConnectionFactory, FastJsonConfig config) {
		RedisT...]]></description><category></category></item><item><title><![CDATA[MYSQL EXPLAIN执行计划命令详解]]></title><link>https://blog.youkuaiyun.com/hello__ZC/article/details/103325830</link><guid>https://blog.youkuaiyun.com/hello__ZC/article/details/103325830</guid><author>hello__ZC</author><pubDate>Sat, 30 Nov 2019 16:14:26 +0800</pubDate><description><![CDATA[]]></description><category></category></item><item><title><![CDATA[MySQL优化一：索引原理]]></title><link>https://blog.youkuaiyun.com/hello__ZC/article/details/103311542</link><guid>https://blog.youkuaiyun.com/hello__ZC/article/details/103311542</guid><author>hello__ZC</author><pubDate>Fri, 29 Nov 2019 16:34:58 +0800</pubDate><description><![CDATA[目录

什么是索引

MySQL中索引的实现

B+TREE的优点

磁盘数据预读

页分裂问题

二级索引（辅助索引）

索引查询过程

使用过程中的tips

什么是索引

 在一般的系统中，数据读一般是比数据写的比例高出许多，所以数据查询优化对于数据库来说是一个非常重要的工作，那么索引就是MySQL针对查询优化所设计的一种数据结构。MySQL官方解释是：索引是为MySQL提高获取数据效率的...]]></description><category></category></item><item><title><![CDATA[git reset三种模式详解]]></title><link>https://blog.youkuaiyun.com/hello__ZC/article/details/102810224</link><guid>https://blog.youkuaiyun.com/hello__ZC/article/details/102810224</guid><author>hello__ZC</author><pubDate>Thu, 28 Nov 2019 11:35:33 +0800</pubDate><description><![CDATA[使用git reset命令可回退到指定的commit，本质其实就是将HEAD指向分支的commit移动到了目标的commit上面

git reset命令有三种模式可供使用，分别是：

git reset --mixed（不加参数默认为此模式）

git reset --sort

git reset --hard

下面分别对这三种模式的使用做一一介绍

一 git reset --mixed（...]]></description><category></category></item><item><title><![CDATA[App版本更新：后台实现策略梳理]]></title><link>https://blog.youkuaiyun.com/hello__ZC/article/details/103277469</link><guid>https://blog.youkuaiyun.com/hello__ZC/article/details/103277469</guid><author>hello__ZC</author><pubDate>Wed, 27 Nov 2019 15:59:55 +0800</pubDate><description><![CDATA[http://www.woshipm.com/pd/2272834.html
]]></description><category></category></item><item><title><![CDATA[安卓app升级的3种方式及交互细节]]></title><link>https://blog.youkuaiyun.com/hello__ZC/article/details/103277423</link><guid>https://blog.youkuaiyun.com/hello__ZC/article/details/103277423</guid><author>hello__ZC</author><pubDate>Wed, 27 Nov 2019 15:58:05 +0800</pubDate><description><![CDATA[http://www.woshipm.com/pd/1547766.html/comment-page-1
]]></description><category></category></item><item><title><![CDATA[通过java程序运行过程来了解JVM原理]]></title><link>https://blog.youkuaiyun.com/hello__ZC/article/details/102915387</link><guid>https://blog.youkuaiyun.com/hello__ZC/article/details/102915387</guid><author>hello__ZC</author><pubDate>Tue, 05 Nov 2019 15:09:37 +0800</pubDate><description><![CDATA[今天这篇文章我们具体分析一下java程序运行起来之中所包含的具体细节，通过这些细节带我们窥探JVM实现的原理。

一、前端编译

使用javac命令将.java程序编译为JVM可解析的.class字节码文件，java作为一种解释型编程语言(当然这么说带有片面性，jvm自带的即时编译器同样可以将字节码直接编译为机器码运行，但是这里我们就不分析即时编译器是如何运行的了)，负责将字节码翻译为机器码运行，...]]></description><category></category></item><item><title><![CDATA[java字面量 符号引用 直接引用]]></title><link>https://blog.youkuaiyun.com/hello__ZC/article/details/102552140</link><guid>https://blog.youkuaiyun.com/hello__ZC/article/details/102552140</guid><author>hello__ZC</author><pubDate>Sat, 02 Nov 2019 13:48:26 +0800</pubDate><description><![CDATA[字面量

java字面量也可以叫做java直接量，简单的解释就是有简单数字，字母组成的字符串(必须是双引号引起的字符串)或者数值，还有引用类型的空指针null，字面量只能以右值出现，“”=“” 左边叫做常量或者变量

例：


inta;//a变量

static intb=10;//b为常量,10为字面量

stringstr="helloworld";//str为变量,hellow...]]></description><category></category></item></channel></rss>