1. The Origin of .NETCore When talking about .NETCore, we must not mention its predecessor .NET. Java was in the limelight at that time, and Microsoft also favored Java. The Java virtual machine on the Windows platform was developed by Microsoft based on JVM standards. It is said to be the best performance Java virtual machine at that time. However, Microsoft has its own little abacus, trying to bundle Java with the Windows platform and add some Windows-specific features. Sun's dissatisfaction with this led to a breakdown of the relationship between the two parties, and Microsoft then launched .NET. .NET has borrowed many features of Java since its inception and gradually surpassed Java in language features and form development. Java in version 1.6

Software preparation I am using a virtual machine with CentOS-6.6, with the host name repo. Refer to the steps to install a Linux virtual machine in Windows, I installed JDK in that virtual machine, refer to the guide to installing JDK in Linux. In addition, the virtual machine is configured with a key-free login itself, and the settings for configuring key-free login between each virtual machine are referenced. The download address of Hadoop installation package is: https://mirrors.aliyun.com/apache/hadoop/common/. I am using hadoop 2.6.5 version. Upload the Hadoop installation package to the server and unzip [root@repo~]#tarzxv

Integrating Postman applications on CentOS can be achieved through a variety of methods. The following are the detailed steps and suggestions: Install Postman by downloading the installation package to download Postman's Linux version installation package: Visit Postman's official website and select the version suitable for Linux to download. Unzip the installation package: Use the following command to unzip the installation package to the specified directory, for example /opt: sudotar-xzfpostman-linux-x64-xx.xx.xx.tar.gz-C/opt Please note that "postman-linux-x64-xx.xx.xx.tar.gz" is replaced by the file name you actually downloaded. Create symbols

IIS is a web server software developed by Microsoft to host websites and applications. 1. Installing IIS can be done through the "Add Roles and Features" wizard in Windows. 2. Creating a website can be achieved through PowerShell scripts. 3. Configure URL rewrites can be implemented through web.config file to improve security and SEO. 4. Debugging can be done by checking IIS logs, permission settings and performance monitoring. 5. Optimizing IIS performance can be achieved by enabling compression, configuring caching and load balancing.

Reasons for IIS' popularity include its high performance, scalability, security and flexible management capabilities. 1) High performance and scalability With built-in performance monitoring tools and modular design, IIS can optimize and expand server capabilities in real time. 2) Security provides SSL/TLS support and URL authorization rules to protect website security. 3) Application pool ensures server stability by isolating different applications. 4) Management and monitoring simplifies server management through IISManager and PowerShell scripts.

RedHatendedsupportforCentOStoshifttowardsacommerciallyfocusedmodelwithCentOSStream.1)CentOStransitionedtoCentOSStreamforRHELdevelopment.2)ThisencourageduserstomovetoRHEL.3)AlternativeslikeAlmaLinux,RockyLinux,andOracleLinuxemergedasreplacements.

Apachebecamefamousduetoitsopen-sourcenature,modulardesign,andstrongcommunitysupport.1)Itsopen-sourcemodelandpermissiveApacheLicenseencouragedwidespreadadoption.2)Themodulararchitectureallowedforextensivecustomizationandadaptability.3)Avibrantcommunit

Optimizing the performance of Hadoop distributed file system (HDFS) on CentOS systems can be achieved through a variety of methods, including adjusting system kernel parameters, optimizing HDFS configuration files, and improving hardware resources. The following are detailed optimization steps and suggestions: Adjust the system kernel parameters to increase the limit on the number of files opened by a single process: Use the ulimit-n65535 command to temporarily adjust. If it needs to take effect permanently, please edit the /etc/security/limits.conf and /etc/pam.d/login files. Optimize TCP parameters: Edit /etc/sysctl.conf file, add or modify the following content: net.ipv4.tcp_tw