Tomcat 的热加载和热部署通过后台线程和生命周期事件实现了动态更新，类加载机制则为其提供了底层支持。在实际工作中，可以根据需求选择适合的策略。

Method 1: Using document.lastModified JavaScript has a nifty command which you can use to check the last update date of any website. This can be executed two ways; either you can execute the command ...

Description If you try to get the updated_at value via the lastModified () method, it does not return the correct date. The problem seems to be that the $entry->get ('updated_at') method call is ...

Jenkins and plugins versions report Environment Jenkins: 2.319.1 OS: Windows NT (unknown) - 10.0 --- Office-365-Connector:4.15.2 abort-downstream-builds:1.0 ace-editor:1.1 active-directory:2.25 ana ...

Last-Modified 表示本地文件最后修改日期，浏览器会在request header加上If-Modified-Since (上次返回的Last-Modified的值)，询问服务器在该日期后资源是否有更新，有更新的话就会将新的资源发送回来。

This post offers differnt ways to check or find out when a web page was last updated. You can use a Chrome extension, the sitemap or this online tool.