Simple lazy loading of the web
Usually we need to write JavaScript to handle lazy loading of images, usually in the form of a scroll handler or a cross-viewer
性能优化
PHP Opcache accelerates access
Opcache is a way to avoid the overhead of loading and parsing the PHP script each time by storing the pre-compiled bytecode (Operate Code) of the parsed PHP script in the shared memory. The parser can directly read the cached words from the shared memory. Operate Code, which greatly improves the execution efficiency of PHP
Four metrics every mobile developer should care about
Slow applications can frustrate users, leading to bad reviews, or customers swiping to the left to compete. Unfortunately, viewing and fixing performance issues can be a arduous and time-consuming task