The front-end performance optimization is mainly divided into two big points: 1. Reuse (maintenance, development cost) file reuse ## JS, CSS, HTML, media file module reuse ## JS plug-in ## iframe 2. ## Load the user with important information, such as logo/ core features. ## The user does not trigger the function, but the bandwidth is idle, or the main elements of the page are loaded, we can load later, but if the user triggers the function, the module load time is early
Technical first screen time (the time consumed by function points loaded into the first screen)
White screen time (time from page entry to head parsing)
Operable time (related to modules, mainly to test the utilization rate of core modules, and user perception)
Connection rate (mostly video sites, time is the vertical axis, mainly refers to the proportion of video or sound that Hu Yong sees or hears at corresponding time)
Product class
Pv Accesses a PV once
Uv access the same person multiple times once UV
Number of daily active users (Google Analytics)
Number of MONTHLY active users
Jump rate (people who stay after jump time/PV)