Detailed instructions on the number of IIS connections (number of instant connections) and "Number of people online" _ Website application

First, understand what the number of IIS connections (instantaneous connections)
IIS connection number refers to the number of concurrent connections requested, in several cases: (200M virtual host allow instantaneous connection number of 40 examples)
A, users download your files, the end of normal disconnect, these connections are calculated in an instant, that is, you connect the number of 40 of virtual host can be accepted at the same time 40 points to download.
B, the user opens your page, even if stays on the page does not make any request to the server, then in the user opens a page after 90 seconds also to occupy one connection, means that you connect several 40 websites 90 seconds to accept different users to open 40 pages.
C, the situation above B the user continues to open the other pages of the same site, then the number of online users in accordance with the user's last click (issued a request) after 90 seconds, in this 90 seconds no matter how users click (including a new window to open) are still a connection.
D, when your page exists within the framework (IFRAME), then each more than one frame will be more than one times the connection! Because this is equivalent to a user requesting more than one page to the server at the same time.
E, when the user opens the page and then closes the browser normally, the number of users in the connection will also be cleared immediately.
F, when you make a Web page in the picture is a URL connection (such as yun_qi_img/image.gif) exists. Each picture URL Viewer's computer must request the server to send again. As a result, the relative number of connections is increased.
G, the links between the website.

Site construction will exist with other people's site to establish friendship links, if the establishment of friendship when you provide to the other party your site's logo image as the URL, when the browser to browse each other site when the logo image of your site displayed from your virtual host, This logo image each time by other site calls will occupy your relatively many connections. (equivalent to this picture is "hotlinking")

• Next to understand what is the number of forum online
Forum online only calculates the number of active users within a certain period of time. The time here the general user can set themselves (delete inactive user time), such as the Dynamic Network forum defaults to 40 minutes delete inactive users.
According to the instructions above, it is clear that the Forum online and IIS connection number concept is different.

• Why does the number of IIS connections and forums online not meet?
1. The number of connections is based on the number of instantaneous user requests, and the number of forum online users can be set up by the user in the Forum background management (such as dynamic Network Forum).
2. Your forum has pictures and other documents are hotlinking by people! For example: Your forum has a picture file, pasted (note is pasted is not uploaded) to other forums! Other forums for users to browse the file is also counted as an online number! Especially when the logo connection attention, must be the other side of your logo upload to his space!
3. You have the download file on your space! If the user uses the Internet ant class software, each thread represents an online, very consuming connection resource.