10+ SQL Server commonly used scripts, In the development environment, we can perform arbitrary operations on the database. Once the project is completed and is about to go online, we may perform some deletion operations on the database, such as deleting all stored procedures, all views, backups, restores, etc.
How to install Kafka as windows service? The official website project uses kafka and zookeeper. It was originally started through the command line. The risk is that other people on the server may shut down the command line cmd for you at any time or accidentally, so that kafka and zookeeper will die.
How to use zookeeper commands? After preparing the corresponding configuration, you can directly use the zkServer.sh script to perform service-related operations, such as starting the zookeeper service, viewing the zookeeper service status, stopping the zookeeper service, and restarting the zookeeper service.
How to use Expression to call the Contains method of a string? Recently, I encountered a requirement in a project that needs to dynamically use the expression Expression to call the Contains method of the string, and record a mistake made by the C# constructing Expression to call the string Contains.