<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[a853929779的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/a853929779</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; a853929779]]></copyright><item><title><![CDATA[【无标题】]]></title><link>https://blog.youkuaiyun.com/a853929779/article/details/158011036</link><guid>https://blog.youkuaiyun.com/a853929779/article/details/158011036</guid><author>a853929779</author><pubDate>Thu, 12 Feb 2026 18:35:40 +0800</pubDate><description><![CDATA[runtime 包是 Go 程序调优和监控的重要工具，合理使用可以帮助我们更好地理解和优化程序性能。但要注意不要过度依赖手动干预，让运行时自动管理往往是最优选择。]]></description><category></category></item><item><title><![CDATA[Go 语言 runtime 包的使用与注意事项]]></title><link>https://blog.youkuaiyun.com/a853929779/article/details/158010814</link><guid>https://blog.youkuaiyun.com/a853929779/article/details/158010814</guid><author>a853929779</author><pubDate>Thu, 12 Feb 2026 18:10:35 +0800</pubDate><description><![CDATA[runtime 包是 Go 语言标准库中一个非常重要的包，它提供了与 Go 运行时环境交互的接口。通过 runtime 包，我们可以获取程序运行时的各种信息，如内存使用、垃圾回收状态、goroutine 数量等。runtime 包是 Go 程序调优和监控的重要工具，合理使用可以帮助我们更好地理解和优化程序性能。fmt.Printf("堆分配: %.2f MB\n", float64(m.Alloc)/1024/1024)fmt.Printf("当前 Goroutine 数量: %d\n", num)]]></description><category></category></item><item><title><![CDATA[Shiro 源码编译]]></title><link>https://blog.youkuaiyun.com/a853929779/article/details/125373238</link><guid>https://blog.youkuaiyun.com/a853929779/article/details/125373238</guid><author>a853929779</author><pubDate>Mon, 20 Jun 2022 17:28:53 +0800</pubDate><description><![CDATA[shiro 1.6.0 源码编译]]></description><category></category></item><item><title><![CDATA[VS2022 C# 项目无法选择.netframework 4.0 的问题解决]]></title><link>https://blog.youkuaiyun.com/a853929779/article/details/125196325</link><guid>https://blog.youkuaiyun.com/a853929779/article/details/125196325</guid><author>a853929779</author><pubDate>Thu, 09 Jun 2022 09:11:06 +0800</pubDate><description><![CDATA[由于客户端可能需要兼容XP系统，.netframework 最高能用到4.0，新电脑安装了VS2022 ， 突然发现已不再支持 .netframework 4.0   路径如下C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework重启VS2022 ，可以选择了 .netframework 2019 依赖包 下载地址https://download.youkuaiyun.com/download/a853929779/85]]></description><category></category></item><item><title><![CDATA[解决使用PLSQL 查询很快但是使用MyBati查询却很慢的问题的解决]]></title><link>https://blog.youkuaiyun.com/a853929779/article/details/106269916</link><guid>https://blog.youkuaiyun.com/a853929779/article/details/106269916</guid><author>a853929779</author><pubDate>Thu, 21 May 2020 23:26:48 +0800</pubDate><description><![CDATA[解决使用PLSQL 查询很快但是使用MyBati查询却很慢的问题问题描述问题的解决问题产生原因
问题描述
大表使用时间字段进行了分区， 并且使用 创建了local index 索引， 表中 接近2千万条记录， 直接使用plsql 带索引条件查询不到1秒， web 应用 时间 1分多种。
问题的解决
链接: link. 从这里得到启发，应用中除了索引字段条件还包括时间条件：
修改前：
// d 为Date类型， 数据库该字段类型 为 timestamp
 criteria.andGreaterThanOrEq]]></description><category></category></item><item><title><![CDATA[真机最小化安装centos7 网卡驱动]]></title><link>https://blog.youkuaiyun.com/a853929779/article/details/85959608</link><guid>https://blog.youkuaiyun.com/a853929779/article/details/85959608</guid><author>a853929779</author><pubDate>Sun, 06 Jan 2019 23:53:27 +0800</pubDate><description><![CDATA[

 

 

 

​​

 

时间 | 2019年1月6日

地点 | 家

版本 | v1

​​

 

 

​​ 环境

 

1、 8gb 内存

2、 网卡，公司买的攒机

没安装网卡显示是：Centos7 Intel Corporation Device 15bc

​​

3 、128 固态 1T 硬盘

 

​​ 安装

 

使用软碟通软件+centos7 镜像文件制作...]]></description><category></category></item><item><title><![CDATA[Docker-maven-plugin 文档翻译]]></title><link>https://blog.youkuaiyun.com/a853929779/article/details/85012459</link><guid>https://blog.youkuaiyun.com/a853929779/article/details/85012459</guid><author>a853929779</author><pubDate>Sat, 15 Dec 2018 11:15:27 +0800</pubDate><description><![CDATA[Docker-maven-plugin 文档翻译

原文地址：https://github.com/spotify/docker-maven-plugin

 

 

A Maven plugin for building and pushing Docker images.

用于构建和推送Docker镜像的Maven插件。

 

We recommend that new projects...]]></description><category></category></item><item><title><![CDATA[2018-12-10 Docker Compose 命令说明：]]></title><link>https://blog.youkuaiyun.com/a853929779/article/details/84998503</link><guid>https://blog.youkuaiyun.com/a853929779/article/details/84998503</guid><author>a853929779</author><pubDate>Fri, 14 Dec 2018 10:04:59 +0800</pubDate><description><![CDATA[2018-12-10 Docker Compose 命令说明：

原文地址：https://docs.docker.com/compose/reference/

 

docker-compose build

 

Usage: build [options] [--build-arg key=val...] [SERVICE...]

 

Options:

--compress Comp...]]></description><category></category></item><item><title><![CDATA[Get started with Docker Compose]]></title><link>https://blog.youkuaiyun.com/a853929779/article/details/84852553</link><guid>https://blog.youkuaiyun.com/a853929779/article/details/84852553</guid><author>a853929779</author><pubDate>Thu, 06 Dec 2018 14:03:11 +0800</pubDate><description><![CDATA[On this page you build a simple Python web application running on Docker Compose. The application uses the Flask framework and maintains a hit counter in Redis. While the sample uses Python, the conce...]]></description><category></category></item><item><title><![CDATA[DockerCompose 安装]]></title><link>https://blog.youkuaiyun.com/a853929779/article/details/84819236</link><guid>https://blog.youkuaiyun.com/a853929779/article/details/84819236</guid><author>a853929779</author><pubDate>Wed, 05 Dec 2018 09:46:14 +0800</pubDate><description><![CDATA[Prerequisites

 

预备知识：

 

Docker Compose relies on Docker Engine for any meaningful work, so make sure you have Docker Engine installed either locally or remote, depending on your setup.

 

Docker ...]]></description><category></category></item><item><title><![CDATA[Overview of Docker Compose(源码翻译)]]></title><link>https://blog.youkuaiyun.com/a853929779/article/details/84815359</link><guid>https://blog.youkuaiyun.com/a853929779/article/details/84815359</guid><author>a853929779</author><pubDate>Wed, 05 Dec 2018 08:32:46 +0800</pubDate><description><![CDATA[Overview of Docker Compose

Docker Compose 概览，预计阅读时间 5分钟

 

Docker Compose is a tool for defining and running multi-container Docker applications. With Compose, you use a YAML file to configure your ...]]></description><category></category></item><item><title><![CDATA[ServerSocket  2018-12-04 NIO 源码阅读]]></title><link>https://blog.youkuaiyun.com/a853929779/article/details/84782463</link><guid>https://blog.youkuaiyun.com/a853929779/article/details/84782463</guid><author>a853929779</author><pubDate>Tue, 04 Dec 2018 08:23:22 +0800</pubDate><description><![CDATA[阅读内容

public class ServerSocket implements

This class implements server sockets. A server socket waits for requests to come in over the network. It performs some operation based on that request, and ...]]></description><category></category></item><item><title><![CDATA[SocketAddress,Socket,SocketOptions,SockertImpl,2018-12-02 7:00-8:00 NIO源码阅读]]></title><link>https://blog.youkuaiyun.com/a853929779/article/details/84782457</link><guid>https://blog.youkuaiyun.com/a853929779/article/details/84782457</guid><author>a853929779</author><pubDate>Tue, 04 Dec 2018 08:22:37 +0800</pubDate><description><![CDATA[阅读内容

 

abstract SocketAddress

 

This class represents a Socket Address with no protocol attachment.

As an abstract class, it is meant to be subclassed with a specific,

protocol dependent, implem...]]></description><category></category></item><item><title><![CDATA[2018-12-01 6:40-8：00 NIO 源码阅读]]></title><link>https://blog.youkuaiyun.com/a853929779/article/details/84670511</link><guid>https://blog.youkuaiyun.com/a853929779/article/details/84670511</guid><author>a853929779</author><pubDate>Sat, 01 Dec 2018 08:24:57 +0800</pubDate><description><![CDATA[ 

阅读内容：

 

interface chanel

 

A nexus for I/O operations.

I/O操作的连接。

 

A channel represents an open connection to an entity such as a hardware device, a file, a network socket, or a program comp...]]></description><category></category></item><item><title><![CDATA[史济怀20180915_1 有限覆盖定理]]></title><link>https://blog.youkuaiyun.com/a853929779/article/details/80921429</link><guid>https://blog.youkuaiyun.com/a853929779/article/details/80921429</guid><author>a853929779</author><pubDate>Thu, 05 Jul 2018 08:57:55 +0800</pubDate><description><![CDATA[1.9 上确界和下确界证明： 03：00定理 有上界的非空集合必有上确界    有下界的非空集合必有下确界第二种方式 16m -Sup(-E) = imfE 或Sup(-E) = -imfE如果E 没有上界 ，就说 E趋于 +无穷如果E 没有下界，就说 E 趋于 负无穷p.41 (3)24m第十节 ， 有限覆盖定理一族开区间32mHeime-Borel 定理练习Bolzano-Weieristra...]]></description><category></category></item><item><title><![CDATA[史济怀数学分析-0910_1、2 自然底数e精确计算、基本列柯西定理、上下确界]]></title><link>https://blog.youkuaiyun.com/a853929779/article/details/80768549</link><guid>https://blog.youkuaiyun.com/a853929779/article/details/80768549</guid><author>a853929779</author><pubDate>Fri, 22 Jun 2018 07:49:12 +0800</pubDate><description><![CDATA[自然底数e精度的计算e 是一个无理数 10m17m例题lim 1 - 1/n ) ^ n19m lim 1 + 2 / n ) ^ n 22m1.8 节基本列和Cauchy 收敛原理基本列例题 34m证明是基本列an = 1 + 1 / 2^2 +1 / 3 ^ 2 ... 1 / n^2证明不是基本列an = 1 + 1/ 2 + ... + 1/n准备知识 42m引理 定理 从任何有界数列中必...]]></description><category></category></item><item><title><![CDATA[0812_2 史济怀_套区间原理_自然底数e]]></title><link>https://blog.youkuaiyun.com/a853929779/article/details/80660408</link><guid>https://blog.youkuaiyun.com/a853929779/article/details/80660408</guid><author>a853929779</author><pubDate>Tue, 12 Jun 2018 09:01:26 +0800</pubDate><description><![CDATA[0801 2例2提示套区间定理11分钟开区间的没太懂1.7 自然底数e22 分钟利用二项式定理习题25页1 2 4 56 有兴趣做练习题1.629]]></description><category></category></item><item><title><![CDATA[hadoop01_hdfs的shell命令]]></title><link>https://blog.youkuaiyun.com/a853929779/article/details/80603949</link><guid>https://blog.youkuaiyun.com/a853929779/article/details/80603949</guid><author>a853929779</author><pubDate>Thu, 07 Jun 2018 09:01:23 +0800</pubDate><description><![CDATA[hdfs文件系统对比理解windows 的 ntfs linux 的文件系统区别对待数据管理系统mysql、oracle只负责存储文件为处理大数据而生， 目的数据虽然存储在不同机器上，单对用户来说 都像是在一台机器上。hdfs shellhdfs [--config confdir] [--loglevel loglevel] COMMAND--config 指定配置信息的文件信息适合很多的变化的...]]></description><category></category></item><item><title><![CDATA[史济怀0905_1、2 无穷小量、夹逼定理]]></title><link>https://blog.youkuaiyun.com/a853929779/article/details/80589839</link><guid>https://blog.youkuaiyun.com/a853929779/article/details/80589839</guid><author>a853929779</author><pubDate>Wed, 06 Jun 2018 09:00:01 +0800</pubDate><description><![CDATA[无穷小量1) {an} 无穷小 等价于 |{an}| 是无穷小2) 两个无穷小量的积是无穷小3) 有界与无穷小的积无穷小4) 0 &amp;gt; an &amp;lt; bn {bn} 无穷小 an 是无穷小5) lim an = a 充要条件 {an - a} 是无穷小5 个 关于无穷小量的定理09:00例 1liman = 0 则 lim 算数平均也是 018:00例 2 （当习题了）几何平均19:00定理...]]></description><category></category></item><item><title><![CDATA[linux学习2-字符串、数组操作、标准错误输入输出、定时任务、PS、JPS]]></title><link>https://blog.youkuaiyun.com/a853929779/article/details/80532902</link><guid>https://blog.youkuaiyun.com/a853929779/article/details/80532902</guid><author>a853929779</author><pubDate>Fri, 01 Jun 2018 08:50:59 +0800</pubDate><description><![CDATA[字符串的操作 echo ${hdsx}www.hdsxtech.com[root@kdbdomain ~]# echo ${#hdsx} 获取长度16[root@kdbdomain ~]# echo ${hdsx:1:2}  截取echo ${hdsx: -3} 从后面截取echo ${hdsx#*h} 匹配h字符， 之前的不要echo ${hdsx##*h} 匹配到最后一个h字符， 之前的都不要...]]></description><category></category></item></channel></rss>