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Python asyncio

Python asyncio high-level APIs Coroutines and Tasks async/await asyncio.run() 运行coroutines顶级入口点 asyncio.create_task() 创建并发coroutines任务 asyncio.TaskGroup() 3.11 替代asyncio.create_task 一个对象如果可以使用await, 那么就说这个对象是awaitables asyncio库的对象, 大多数是awaitables coroutine function: an async def function; coroutine object: an object returned by c...

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Linux 安装python3.6

Linux 安装python3.6 wget https://www.python.org/ftp/python/3.6.5/Python-3.6.5.tgz Reference linux centos7 安装python3.6 替换默认python2.7

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Windows 兼容posix

Windows 兼容posix MinGW (Minimalist GNU for Windows) and Cygwin are both tools that allow developers to build and run Unix-like applications on Windows systems. However, they differ in several key ways. Compatibility: Cygwin provides a POSIX-compatible layer that emulates a Unix-like environment on Windows. This means that Unix-like applications...

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tomcat

tomcat 开启监控 tomcat-users.xml <role rolename="manager-gui"/> <role rolename="manager-jmx"/> <user username="hbzw2023" password="hbzw2023#3202" roles="manager-gui, manager-jmx"/> 内存优化 startup.sh export CATALINA_OPTS=" -server -Dfile.encoding=UTF-8 -Xms4096m -Xmx4096m -XX:PermSize=256M -XX:MaxNewSize=256m -XX:MaxPermSize=10...

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磁盘阵列

磁盘阵列 dmesg | grep -i raid cat /proc/scsi/scsi cat /proc/mdstat mdadm oracle 查看磁盘阵列 kfod disks=all Reference

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Oracle

Oracle Oracle数据库可以单机和集群实现, 集群也分为高可用集群和负载均衡集群(以负载均衡集群为主) Oracle集群是一组协同工作的服务器或节点,为Oracle数据库和应用程序提供高可用性和可伸缩性。 服务器或节点通过共享网络和存储基础设施连接,允许它们作为单个系统一起工作。 集群配置提供跨多个节点分布工作负载的能力,允许在节点故障时改进性能和自动故障转移。 Oracle Grid Infrastructure(GI) Grid Infrastructure (简称GI)是11gR2版本新出现的安装包,使用独立的grid用户进行安装。 如果要使用Clusterware、ASM、ACFS、ASM动态卷等功能时都需要先安装此包。 Grid Infrastru...

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