Bandwidth budget of website construction

PV (Page view): page views, the number of site views is a common index to evaluate website traffic

Pre-site visits less than 1 million PV is certainly not, the pre-visit volume is expected in, the portal site 5,000 PV, e-commerce 10,000 PV, through the calculation of bandwidth for: portal site for 0.48M, e-commerce for 0.96M. Consider system redundancy at the same time 0.3. That is, the required bandwidth is (0.48+0.96)/0.7=2.05m that is 4M bandwidth (the bandwidth is even and integer)

That is enough in the early 4M bandwidth, but as the propaganda and promotion traffic will quickly rise, a short period of time will reach a balance. The web portal is expected to reach 100,000 PV, e-commerce 400,000 PV or so
"(10/0.5)0.48+ (40/1)0.96"/0.7=68.5m is 70M bandwidth.

Of course this is also in a premise: 1S within the site to make the response, research shows that the user can endure the longest waiting time of the median, between 6-8 seconds. This means that 8 seconds is a critical value, and if your site is open for more than 8 seconds, chances are that most visitors will eventually leave you. Research shows that if the page is not loaded after waiting 12 seconds, more than 99% users will close the page and no longer wait. Correspondingly, the more slowly the Web page opens, the stronger the visitor's psychological frustration will be, and the credibility and quality of the site can be questioned. In this case, the user will feel that there may be some errors in the background of the site, because for a long time, he did not get any hints. Moreover, the slow opening speed will let the user forget what to do next, have to re-recall, which will further worsen the user experience.
People don't like slow software because people don't like to wait, and waiting means you're wasting your time and doing nothing. But waiting is the process you have to experience with the computer, the software will not immediately corresponding to your instructions, you need to wait for the software to load, waiting for the Web download, posted ...
Because waiting is not a good feature of the product, you need to minimize its impact. So try to shorten the time for users to wait. If the same amount of bandwidth required to increase the response time is reduced by half, the required bandwidth 70m/2=35m (40M) is sufficient for the portal and e-commerce recommendations to respond within 2S. There are many other ways to shorten user wait time, such as optimization code, and now more popular to join the design of interesting progress bar, on the one hand, the website can show the user feedback message, the progress bar tells the user how much progress is currently completed, how much remains, but also can accurately show how fast, To estimate the time remaining. On the other hand, interesting progress bar design can distract the user's waiting, so that users feel that the waiting time is not so long, the program does not run so slow!

In addition to bandwidth speed, the actual business support situation depends on the following factors: service type (ie, portal, e-commerce), Server hardware performance (CPU, memory), website program, database (Oracle, MYSQL, MSsql) and so on.

PM Wang Kun
Links: https://www.jianshu.com/p/b482ea96bcd1
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Bandwidth budget of website construction