Detailed descriptions of IIS connections (instant connections) and "online users"

First, understand what is the number of IIS connections (instant connections)
The number of IIS connections refers to the number of concurrent requests in several cases: (taking m virtual hosts as an example)
A. the user downloads your files at a single point and is disconnected normally after completion. These connections are calculated in an instant, that is, the VM with 40 connections can be instantly downloaded at 40 points at the same time.
B. When a user opens your page, even if the user stays on the page and does not send any request to the server, a connection will be occupied within 90 seconds after the user opens a page, that is to say, for websites with 40 connections, 40 pages can be opened by different users in 90 seconds.
C. In the case of B above, the user continues to open other pages of the same website. The number of online users is calculated based on the 90 s after the last click (Send request) of the user, in the 90 s, no matter how you click (including opening a new window), it is still a connection.
D. When an IFRAME exists in your page, you need to connect multiple frames! This means that the user requests multiple pages to the server at the same time.
E. When the user opens the page and closes the browser normally, the user's connections will be cleared immediately.
F. When an image in a Web page you make exists as a URL Connection (such as a http://123.com/image.gif. Each image URL viewer's computer must send a new request to the server. Therefore, the number of connections in use increases.
G. Links between websites.

All website construction projects will establish links with other websites. If the logo image you provide to your website when establishing a link is a URL address, when a visitor browses a website, the logo image of your website comes from your VM. The logo image is called by other sites each time it occupies a relatively large number of connections. (This image is "leeching ")

· What is the number of online users of the Forum?
Online forums only count the number of active users within a certain period of time. Generally, you can set the time here (to delete non-active users). For example, the default time for a forum on the mobile network is 40 minutes to delete non-active users.
According to the above description, the concept of the number of online and IIS connections in the Forum is obviously different.

· Why is there any inconsistency between the number of IIS connections and online forum?
1. The number of connections is calculated based on the number of instantaneous user requests. The number of online users of the Forum can be set by the user in the background management of the Forum (such as the number of online forums ).
2. Your forum has images and other files stolen! For example, if your forum has an image file, it will be pasted (note that it is not uploaded) to another forum! When users in other forums browse this file, the number of online users is also counted! Especially when connecting the logo, you must upload your logo to his space!
3. You have downloaded files in your space! If a user uses network ant software, each thread indicates an online connection, which occupies a lot of connection resources.