<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[Why9310的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/Why9310</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; Why9310]]></copyright><item><title><![CDATA[Docker下openjdk:17环境缺失字体文件]]></title><link>https://blog.youkuaiyun.com/Why9310/article/details/148850880</link><guid>https://blog.youkuaiyun.com/Why9310/article/details/148850880</guid><author>Why9310</author><pubDate>Mon, 23 Jun 2025 17:26:34 +0800</pubDate><description><![CDATA[java.lang.UnsatisfiedLinkError: /usr/local/jdk17/lib/libfontmanager.so: libfreetype.so.6: 无法打开共享对象文件没有这样的文件或目录。在dockerfile中增加以下命令。]]></description><category></category></item><item><title><![CDATA[Excel操作]]></title><link>https://blog.youkuaiyun.com/Why9310/article/details/146145312</link><guid>https://blog.youkuaiyun.com/Why9310/article/details/146145312</guid><author>Why9310</author><pubDate>Mon, 10 Mar 2025 10:07:53 +0800</pubDate><description><![CDATA[【代码】Excel操作。]]></description><category></category></item><item><title><![CDATA[redis常用命令]]></title><link>https://blog.youkuaiyun.com/Why9310/article/details/145137595</link><guid>https://blog.youkuaiyun.com/Why9310/article/details/145137595</guid><author>Why9310</author><pubDate>Thu, 16 Jan 2025 18:00:42 +0800</pubDate><description><![CDATA[查找所有以 user: 开头的 key。]]></description><category></category></item><item><title><![CDATA[MySQL分区表语法]]></title><link>https://blog.youkuaiyun.com/Why9310/article/details/144718948</link><guid>https://blog.youkuaiyun.com/Why9310/article/details/144718948</guid><author>Why9310</author><pubDate>Thu, 26 Dec 2024 14:45:19 +0800</pubDate><description><![CDATA[分区键需要和主键设置为复合主键。3.利用存储过程批量创建分区表。]]></description><category></category></item><item><title><![CDATA[GBASE数据库使用]]></title><link>https://blog.youkuaiyun.com/Why9310/article/details/140666051</link><guid>https://blog.youkuaiyun.com/Why9310/article/details/140666051</guid><author>Why9310</author><pubDate>Wed, 24 Jul 2024 16:29:53 +0800</pubDate><description><![CDATA[GBASE可以使用postgresql的数据库连接方式。]]></description><category></category></item><item><title><![CDATA[MySQL部分查询写法]]></title><link>https://blog.youkuaiyun.com/Why9310/article/details/140523155</link><guid>https://blog.youkuaiyun.com/Why9310/article/details/140523155</guid><author>Why9310</author><pubDate>Thu, 18 Jul 2024 14:50:03 +0800</pubDate><description><![CDATA[2.1修改group_concat返回值的最大长度，永久生效，需要重启。2.2修改group_concat返回值的最大长度，临时修改，重启失效。不加insert-strategy: ignored会导致批量插入失败。1.根据a列进行分组，然后取b列最新的一条数据，b列是时间类型。2.查看group_concat返回值的最大长度，默认1024。3.MySQL + mybatis plus批量插入配置。5.查询表名、备注、索引情况。6.mysql登录语法。在mysqld下加入。7.单表重复数据删除。]]></description><category></category></item><item><title><![CDATA[Java对List的操作]]></title><link>https://blog.youkuaiyun.com/Why9310/article/details/140502253</link><guid>https://blog.youkuaiyun.com/Why9310/article/details/140502253</guid><author>Why9310</author><pubDate>Wed, 17 Jul 2024 18:40:26 +0800</pubDate><description><![CDATA[【代码】Java对List的操作。]]></description><category></category></item><item><title><![CDATA[内存飙升分析]]></title><link>https://blog.youkuaiyun.com/Why9310/article/details/140281337</link><guid>https://blog.youkuaiyun.com/Why9310/article/details/140281337</guid><author>Why9310</author><pubDate>Tue, 09 Jul 2024 10:29:25 +0800</pubDate><description><![CDATA[使用内存分析工具（如VisualVM, MAT, JProfiler）分析内存占用情况。jmap生成堆Dump文件，分析内存使用，查看对象的数目和占用内存大小。跟内存泄漏和内存溢出的情况差不多。使用top命令查看内存使用情况。]]></description><category></category></item><item><title><![CDATA[内存溢出和内存泄漏分析及解决]]></title><link>https://blog.youkuaiyun.com/Why9310/article/details/140281119</link><guid>https://blog.youkuaiyun.com/Why9310/article/details/140281119</guid><author>Why9310</author><pubDate>Tue, 09 Jul 2024 10:28:21 +0800</pubDate><description><![CDATA[内存溢出：通常发生在程序运行时，当程序所需内存超过了系统分配的内存空间，导致程序无法正常运行。包含OutOfMemoryError和StackOverflowError。内存泄漏：程序在申请内存后未能正确释放，导致程序在持续运行过程中不断消耗系统资源，最终可能导致系统性能下降甚至崩溃。]]></description><category></category></item><item><title><![CDATA[docker安装配置springcloud运行环境]]></title><link>https://blog.youkuaiyun.com/Why9310/article/details/134990073</link><guid>https://blog.youkuaiyun.com/Why9310/article/details/134990073</guid><author>Why9310</author><pubDate>Thu, 14 Dec 2023 11:11:24 +0800</pubDate><description><![CDATA[一.docker安装mysql。二.docker安装nacos。]]></description><category></category></item><item><title><![CDATA[docker安装nacos]]></title><link>https://blog.youkuaiyun.com/Why9310/article/details/134982362</link><guid>https://blog.youkuaiyun.com/Why9310/article/details/134982362</guid><author>Why9310</author><pubDate>Wed, 13 Dec 2023 21:20:33 +0800</pubDate><description><![CDATA[1.查看有那些nacos镜像。2.获取指定版本的镜像。]]></description><category></category></item><item><title><![CDATA[docker安装配置教程及常用命令]]></title><link>https://blog.youkuaiyun.com/Why9310/article/details/134982122</link><guid>https://blog.youkuaiyun.com/Why9310/article/details/134982122</guid><author>Why9310</author><pubDate>Wed, 13 Dec 2023 21:09:28 +0800</pubDate><description><![CDATA[var/lib/docker/containers/容器ID/容器ID-json.log。3.启动 docker 并测试是否安装成功。9.docker 监控日志 最后100行。10.docker按关键字搜索日志。2.查看docker版本号。1.安装docker镜像。5.查看docker状态。6.docker日志位置。5.进入docker内部。1.查看正在运行的容器。或者进入容器所在目录。8.查看容器启动命令。]]></description><category></category></item><item><title><![CDATA[kafka安装配置教程]]></title><link>https://blog.youkuaiyun.com/Why9310/article/details/134957428</link><guid>https://blog.youkuaiyun.com/Why9310/article/details/134957428</guid><author>Why9310</author><pubDate>Tue, 12 Dec 2023 19:50:40 +0800</pubDate><description><![CDATA[进入bin目录，编辑kafka-server-start.sh。新版本的包已经包含有zookeeper。]]></description><category></category></item><item><title><![CDATA[Linux常用命令]]></title><link>https://blog.youkuaiyun.com/Why9310/article/details/134908889</link><guid>https://blog.youkuaiyun.com/Why9310/article/details/134908889</guid><author>Why9310</author><pubDate>Sun, 10 Dec 2023 15:20:29 +0800</pubDate><description><![CDATA[将名为myfolder的文件夹打包并压缩成名为myarchive.tar.gz的文件。·chmod用于更改文件或目录的访问权限，如读（r）、写（w）、执行（x）LISTEN表示端口被占用，LISTENING不是表示端口被占用。解压tar.gz文件：使用tar命令，解压tar.gz文件。解压tar文件：使用tar命令，解压tar文件。解压单个文件：使用gzip命令，解压单个文件。包括总内存、已用内存、空闲内存等信息。2.解压文件、压缩打包文件。11.查看进程占用内存情况。查看防火墙放行的所有端口。]]></description><category></category></item><item><title><![CDATA[kafka eagle(EFAK)安装及常用命令]]></title><link>https://blog.youkuaiyun.com/Why9310/article/details/134903198</link><guid>https://blog.youkuaiyun.com/Why9310/article/details/134903198</guid><author>Why9310</author><pubDate>Sun, 10 Dec 2023 00:05:50 +0800</pubDate><description><![CDATA[启动程序停止程序。]]></description><category></category></item><item><title><![CDATA[Kafka常用命令]]></title><link>https://blog.youkuaiyun.com/Why9310/article/details/134879474</link><guid>https://blog.youkuaiyun.com/Why9310/article/details/134879474</guid><author>Why9310</author><pubDate>Fri, 08 Dec 2023 15:16:09 +0800</pubDate><description><![CDATA[查询Topic列表。]]></description><category></category></item><item><title><![CDATA[阿里云搭建springcloud+vue项目]]></title><link>https://blog.youkuaiyun.com/Why9310/article/details/134861636</link><guid>https://blog.youkuaiyun.com/Why9310/article/details/134861636</guid><author>Why9310</author><pubDate>Thu, 07 Dec 2023 18:00:23 +0800</pubDate><description><![CDATA[阿里云搭建springcloud+vue项目（一）阿里云搭建springcloud+vue项目（二）阿里云搭建springcloud+vue项目（三）]]></description><category></category></item><item><title><![CDATA[springboot日志DEBUG级别配置]]></title><link>https://blog.youkuaiyun.com/Why9310/article/details/131312724</link><guid>https://blog.youkuaiyun.com/Why9310/article/details/131312724</guid><author>Why9310</author><pubDate>Tue, 20 Jun 2023 18:05:17 +0800</pubDate><description><![CDATA[设置DEBUG级别需要配置自己的项目包，不然会有大量日志。级别配置在配置文件里面。]]></description><category></category></item><item><title><![CDATA[mongodb基本操作]]></title><link>https://blog.youkuaiyun.com/Why9310/article/details/130965182</link><guid>https://blog.youkuaiyun.com/Why9310/article/details/130965182</guid><author>Why9310</author><pubDate>Wed, 31 May 2023 11:18:26 +0800</pubDate><description><![CDATA[【代码】mongodb基本操作。]]></description><category></category></item></channel></rss>