Hot reload意思

"Hot reload" is a feature commonly found in development environments for software, particularly for web applications, that allows the developer to make changes to the source code of their application without having to restart the entire application or server.

When hot reload is enabled, the development server can detect changes to the source code and automatically update the running application with the new changes. This means that the developer can see the effects of their changes in real-time, without having to manually refresh the page or restart the server.

Hot reload is particularly useful for front-end development, where changes to HTML, CSS, or JavaScript files can be instantly reflected in the browser without the need for a full page refresh. It can also be used in backend development, where changes to server-side code can be applied without interrupting the server's operation or losing any data.

The exact implementation of hot reload can vary depending on the development environment and the technologies being used. Some frameworks and tools have built-in support for hot reload, while others may require the use of plugins or additional configuration.