Introduction to the concept of PV IP Uvs

IP (Independent IP): refers to the number of independent IP, different IP address of the total number of computer visits to the site, this is a site traffic analysis of an important indicator. The same IP address within the 00:00-24:00 is counted only once

If said: Go's Day independent ip300w, then at least 300w people to visit

So, the number of independent IP measurement site traffic is not very accurate, because most of the domestic Internet use is NAT mode Internet, a separate IP may have dozens of hundreds of clients to access.

PV (traffic): That is, page view, translation is the browsing of pages, that is, page views or clicks, the user each refresh is counted once.

The specific measure of PV is to send a request to the Web server from the browser, and when the network server receives the request, a Web page (page) corresponding to the request is sent to the browser.
resulting in a PV. So as long as the request is sent to the browser, regardless of whether the page is fully open (download completed), it should be recorded as 1 PV, but in order to prevent users
Brush PV, many sites put PV statistics program at the bottom of the page

PV reaction is to browse the number of pages of a site, so every refresh even once PV, but PV is not the number of visitors to the page, but the number of pages visited by the site

PV is an indicator of the number of pages visited on a website, but it is impossible to estimate how many people are visiting

Metrics for IP/PV:

1. Analyzing the Web server's access logs (excluding js,css, and various images), html,php access times
2. Embed the JS program at the end of all pages
3. Statistical methods provided by third parties, and statistical tools of comparative Trust

UV (Independent visitor): a unique Visitor that accesses a client/mobile site for a visitor. The same client in 00:00-24:00 is counted only once

Measurements of Uvs:

1. Web Server Resolution:
Web server will accept a lot of page requests, each request information inside contains some information about the computer, such as: IP address, the time of the request issued
, the version of the browser, the version of the operating system, and so on. The Web server analyzes these requests, if some common characteristics are met, such as from the same IP
Address, and the same version of the browser, the operating system version is the same, the request time is similar, and so on, if this series of definitions, then you can think that these please
The truth comes from the same visitor, then these visits naturally produce 1 Uvs.

But many people's computer hardware and software are often identical. When multiple people share a computer, there's a problem with statistics.

2. Use cookies to distinguish between:
When a client accesses a Web server for the first time, the Web server sends a cookie to the client's computer, usually on the client computer's C
Disk. A unique number is assigned to this cookie, which records information about the access server, such as the time of the visit, the pages visited, and so on.
The next time you visit here, the server will be able to find the last cookie file you put in and update it directly from your computer, but that unique
The number is not changed. If in a certain time, the server found 2 visit corresponding to a number, then we can think of this from the same visitor, since
It is 1 UV.

The method of using cookies is more accurate than the first, but there are some problems, such as the ability of a client to turn off cookies to ensure high levels of security, or
Some clients set the automatic deletion of cookies when exiting the page, or often manually delete cookies, so this method is less accurate.

As a result, two methods can only get approximate uvs, rather than absolute accuracy. But in the voluminous access data, the energy level sun this data on our website analysis work has been
It can be known and used for analysis. Understanding the actual measurement of these data, it is helpful for us to restore the user's use behavior more real, let us to the website real
The use of the situation to understand more clearly

Introduction to the concept of PV IP Uvs