Excerpt: https: //www.citrons.cn/jishu/226.html
About these words QPS, TPS, PV, UV, GMV, IP, RPS, looks like very professional. But in fact, I think that this is every programmer will understand knowledge, and you can not understand how they are calculated, but at least you know what they mean to represent it?!
QPS
QPS: full name Queries Per Second, means "queries per second rate" is the number one server can respond to queries per second is a measure of a particular query server within the specified time how much of the processing flow.
Briefly, QPS = req / sec = requests / sec. It represents the maximum throughput performance of the server machine.
On the Internet, I saw someone in the introduction QPS, saying: QPS is represented by the number of successful requests to the server a single process per second. But in QPS Baidu Encyclopedia or Wikipedia it did not emphasize a single process, it is mainly emphasized the processing power of the server.
QPS server http_load general we can use to test throughput and Statistics Department web server load.
TPS
TPS namely Transactions Per Second acronym, the number of transactions processed per second. A transaction is the process of a client sends a request to the server and then the server to respond. The client requests the transmission start timing, end timing after the server response is received, the transaction order number and used to calculate the time of completion, the final evaluation point by using the information to make.
TPS process comprising: a client request the server, the internal server process, the server back to the client.
Qps substantially similar to Tps, but the difference is that for the first visit to a page, form a Tps; but once the page request may result in multiple requests to the server, the server for these requests can be included in the "Qps" among .
For example, to access a page Index server will request three times, including once html, once css, once js, then visit this page that will generate a "T", produced three "Q".
PV
PV (page view) that is page views, usually is a measure of a network news channel or website or even one of the main indicators of network news.
PV That page view, page views. User once for each page in the site visit are recorded once every. Users on the same page repeatedly refresh, visit the cumulative amount.
According to this feature, PV brush site is very good brush.
PV is also related to the RV, that is, the number of repeats (repeat visitors) visitors.
UV
UV number (Unique Visitor) access refers to the number of unique visitors to access statistics the number of users accessing a site within one day of (cookie-based), a computer terminal as a visitor.
It can be understood as the number of visits a website's computer. Web site visitors to determine the computer's identity is achieved through the visiting computer's cookies. If you replace the IP without clearing cookies, and then visit the same Web site, the site's statistics UV number is unchanged. If you do not save cookies access, remove the cookies or replace the device access count increases by 1.00: 00-24: 00 end within the same customer multiple visits only counted as a visitor.
According to this feature, if someone asks you brush UV, brush is also very good!
IP
IP (Internet Protocol) number of independent IP, refers to the number of days 1 independent IP browse the page, the browser that is statistically different IP number of users. Whether the same IP visited several pages, the number of independent IP are 1; different IP through the pages, the count will be incremented. WAN IP is based on user IP addresses to distinguish between different visitors, so multiple users (multiple LAN IP) in the same router (with a WAN IP) access, may be recorded as an independent IP visitors. If the user is constantly changing IP, there may be more statistical.
GVM
The so-called GMV, is the Gross Merchandise Volume short. As long as orders, regardless of whether the consumer payment, the seller whether the shipment, whether to return, GMV can put the "big basket" inside.
Electricity supplier is very concerned about GMV and fight a lot of coupons accident, it is estimated will be able to generate a lot of GMV.
According to statistics GMV, if someone asked you to help brush GMV, you can always order, and has been refunded.
RPS
RPS on behalf of throughput, the abbreviation of Requests Per Second. Throughput is a quantitative description of concurrent processing server, the unit is reqs / s, it refers to the number of requests processed per unit time at a certain number of concurrent users.
The maximum number of requests at a certain number of concurrent users that can be processed per unit of time, called maximum throughput.
Some people say that the RPS is equivalent to QPS. In fact, the same can be seen as a statistical way, just different name for it. RPS / QPS, apche ab tool can be measured.
I heard that this can learn a loaded B.
Addition to the above keywords, common are: Response time (RT), throughput (Throughput), the number of concurrent users. Taobao there is OPS, Sessions (site visits) Session and so on.